Two isomers are Butadiene Bicyclobutane.
What is isomers?Isomers are substances that contain precisely the same number of atoms, i.e., they have the exact same empirical formula, but they differ from one another by the arrangement of the atoms. Ethylbenzene, m-xylene, p-xylene, and o-xylene are a few isomers with the formula C8H10.The term "isomer" refers to molecules or polyatomic ions that have different configurations of atoms in space but the same number of atoms in their molecular formulas, or the number of atoms in each element. Isomerism is the presence or potential for isomers. Isomers may or may not have comparable chemical or physical properties.Isomerism results from the ability of atoms in a molecular formula to be organized in different ways, resulting in compounds with diverse physical and chemical properties. They number two.To learn more about isomers refers to:
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which of the following is a testable hypotheses?
O A. if I brush my teeth, I will get fewer cavities than if i don’t brush my teeth.
O B. it’s wrong not to brush your teeth before you have an important conversation with someone.
O C. Green toothpaste taste better than blue toothpaste or red toothpaste.
O D. smart, careful, healthy people always brush their teeth.
Answer:
A
Explanation:
because its the only one that can be tested
What is the concentration of the standard solution (in M) if 15 mL of a 0.2512 M Co(NO3)2 stock solution is added to a 50 mL volumetric flask and diluted to the mark
The concentration of the standard solution (in M) if 15 mL of a 0.2512 M Co(NO3)2 stock solution is added to a 50 mL volumetric flask and diluted to the mark is 0.07536M.
Given volume of Co(NO3)2 stock solution (V1) = 15mL =0.015L
Concentration of Co(NO3)2 stock solution is (M1) = 0.2512M
Volume of volumetric flask (V2) = 50mL = 0.050L
Concentration of standard solution = M2
The number of moles of solute divided by the number of liters of solution is the definition of molarity, a concentration unit in chemistry.
We know that M1V1 = M2V2. Such that,
0.2512 x 0.015 = M2 x 0.050
M2 = 0.07536M
Hence the required concentration of standard solution is 0.07536M
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The function t=f(a) models the time, in minutes, for a chemical reaction to occur as a function of the amount a of catalyst used, measured in milliliters. What are the units for f′′(a) ?
The unit of f''(a) is milliliters/minute^2
The function t=f(a) models the time, in minutes, for a chemical reaction to occur as a function of the amount a of catalyst used, measured in milliliters.
So, here double differentiation is to be done.
t=f(a)
differentiating with respect to t,
d(t)/dt = d(f'(a))/dt
or, d(f'(a))/dt = 1
again differentiating with respect to t,
d [d(f'(a))/dt]/dt = d(1)/dt = 0 ...1
or, f''(a) = 0
so, here if we put 'unit expression' in Left hand side of 1
it is d [d(f'(a))/dt]/dt i.e. mililiters/miniute/minute [as given t is measured in minute and f(a) is measured in ml)
or, ml/minute^2
so as we are performing double differentiation, the unit of f''(a) is milliliters/minute^2
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How many grams are in 2.5 moles of KCl
Answer:
186.25
Explanation:
KCL= 74.5 (molar mass)
2.5*74.5= 186.25
A student heated 30 milliliters of water from 0 degrees celcius to 70 degrees celcius. How much energy did she use to heat the water?
The amount of energy used to heat the water from 0°C to 70°C is 8,786.4J.
How to calculate energy?The amount of energy used in heating a substance can be calculated using the following formula:
Q = mc∆T
Where;
Q = amount of heat absorbed or releasedm = mass of substance in gramsc = specific heat of water at 4.184 J/g°C∆T = change in temperatureAccording to this question, a student heated 30 milliliters of water from 0 degrees celsius to 70 degrees celsius.
Since 1mL of pure water equals 1 gram, then 30mL of water will equal 30grams of water.
Q = 30 × 4.184 × (70 - 0)
Q = 8,786.4J
Therefore, 8,786.4J is the energy used to heat the water sample.
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A student generates a plot of ln(k) vs ln[OH-].
The result yields a straight line with the equation: y = 1.18x + -3.80
According to this data, what is the order of the reaction in OH-, to the nearest whole number?
The order of the reaction is First Order with respect to the hydroxide ion (OH-) can be determined by examining the slope of the line generated in the plot of ln(k) vs ln[OH-]. In this case,
the slope of the line is 1.18, which indicates that the reaction is first-order with respect to OH-. The order of a chemical reaction refers to the power to which the concentration order of a reactant is raised in the rate equation. The rate of a reaction is typically described by the rate equation, which is a mathematical expression that relates the rate of the reaction to the concentrations of the reactants. The order of a reaction is determined experimentally by measuring the rate of the reaction at different concentrations of the reactants and fitting the data to a rate equation.
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If the gauge pressure is 35.0 psi, and we assume the atmospheric pressure surrounding the tire is 1.00 atm, what is the total pressure of the gas in the tire
Pg denotes gauge pressure, which is related to absolute pressure as follows: Pa is the local atmospheric pressure, and pg is equal to p - pa.
An automobile tire gauge, for instance, reads 32.0 psi. 14.2 psi is the atmospheric pressure in the area. The gauge pressure equation states that gauge pressure equals the difference between absolute pressure and atmospheric pressure: P G = P P A, or PG=PPA. A tire pressure gauge, for example, monitors the pressure in the tire above ambient pressure. Gauge pressure is the pressure in particular items. Thus, gauge pressure plus atmospheric pressure add up to the total pressure, or absolute pressure: Pabs=Pg+Patm Pabs is the absolute pressure, Pg is the gauge pressure, and Patm is the atmospheric pressure. P abs = P g + P atm
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Step 1: treatment with NaBH_4 Add curved arrows for the first step, Treat Na^+ as a spectator ion. Step 2: treatment with D_2O Add curved arrows for the second step. Do not show Na^+ counter ion.
The reaction occurs via a nucleophilic substitution mechanism. The D_2O molecule acts as the nucleophile, attacking the carbon atom of the CH_3CH_2OBH_3 molecule.
Step 1:
NaBH_4 + CH_3CH_2OH → CH_3CH_2OBH_3 + NaOH
Step 2:
CH_3CH_2OBH_3 + D_2O → CH_3CH_2OD + BH_3OH
Step by explanation in detail
Step 1:
NaBH_4 + CH_3CH_2OH → CH_3CH_2OBH_3 + NaOH
The reaction occurs via a nucleophilic substitution mechanism. The Na^+ cation acts as a spectator ion and does not take part in the reaction. The BH_4- anion acts as the nucleophile, attacking the carbon atom of the CH_3CH_2OH molecule. This causes the C-O bond to break and the BH_3 group to form a bond with the carbon atom. This results in the formation of the CH_3CH_2OBH_3 molecule and the NaOH molecule.
Step 2:
CH_3CH_2OBH_3 + D_2O → CH_3CH_2OD + BH_3OH
The reaction occurs via a nucleophilic substitution mechanism. The D_2O molecule acts as the nucleophile, attacking the carbon atom of the CH_3CH_2OBH_3 molecule. This causes the C-B bond to break and the D atom to form a bond with the carbon atom. This results in the formation of the CH_3CH_2OD molecule and the BH_3OH molecule.
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Table 4.4 : Metals and Non-metals in Acids and Bases
S.No. Name of the Base Metal Name of the Acid Non-metal
1. Calcium hydroxide Calcium Sulphuric acid Sulphur
2
3
4
5
Answer: devide the concept
Explanation: devide and then answer it
HCl(aq)+NaOH(aq)→NaCl(aq)+H2O(l)
A student had two dilute, colorless solutions, HCl(aq) and NaOH(aq), which were at the same temperature. The student combined the solutions, and the reaction represented above occurred. Which of the following results would be evidence that a chemical reaction took place?
'The temperature of the reaction mixture increases' would be evidence that a chemical reaction took place.
What is a dilute solution?
A dilute solution is a solution that contains fewer solute particles than a more concentrated solution. Dilute solutions are generally less concentrated than more concentrated solutions and are often made by adding more solvent to the solution.
When a chemical reaction takes place, energy is released in the form of heat. This increase in temperature is basically known as an exothermic reaction. An increase in temperature is a sign that a chemical reaction has taken place, as the reaction mixture is absorbing the energy released from the reaction.
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acidity: rank 4-nitrophenol, 3-nitrophenol, and 4-nitro-4-methylcyclohexanol in order of acidity
Nitrophenols should be in the following order: para - > ortho - > meta -. There is one additional resonance structure in ortho- and para-nitrophenol.
The stability of the conjugate base dictates the acidity of nitrophenols (or any acid, for that matter). By examining the resonance structures, it is possible to assess the relative stability of m- and p-nitrophenols.Therefore, ortho- and para-nitrophenol are both more acidic than meta-nitrophenol as a result of resonance effects.Sort the following substances in ascending order of acidity: One is ortho-nitrophenol. Paranitrophenol 2. Para-methylphenol 3. 4 Nitrocyclohexanol An intermediary in the creation of paracetamol is 4-nitrophenol. It is then acetylated with acetic anhydride after being reduced to 4-aminophenol.
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Identify the following chemical reaction: 8 Cu + S8 → 8 CuS
Combination reaction: 8 Cu + S8 8 CuS in terms of chemistry. There are multiple reactants and multiple products.
Combination reaction: what is it?Combination reactions occur when two or more substances combine to form a single new substance. Composite processes are also referred to as synthetic reactions. The typical structure of an active components is A+BAB. A combination reaction occurs when two components combine to form a compound.
What qualities make into a combination reaction?A combination synthesis can involve any number of different reactants. A non-metal and a metal combinations reaction every time leads to an electrolytic process. Combination conformational changes fall into one of three categories. In particular, they consist of two elements combined, two compounds combined, and one element combined with one compound.
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Two spherical objects have masses of 8,000 kg and 5.0 kg. Their centers are separated by a distance of 1.5 m. Find the gravitational attraction between them.
The gravitational force of attraction between the two objects would be 1.1858 x [tex]10^{-6[/tex] Newton.
Gravitational forceThe gravitational force of attraction between two objects of mass m1 and m2 is proportional to the product of the masses of the two objects and inversely proportional to the square of the distance between the two objects.
This is mathematically expressed as follows:
Gravitational force (F) = [tex]Gm_1m_2/d^2[/tex]
Where G is the universal gravitational constant and d is the distance separating the two masses.
In this case:
m1 = 8,000 kg
m2 = 5.0 kg
G = 6.67 x [tex]10^{-11[/tex] N m2 / kg2
d = 1.5 m
F = 6.67 x [tex]10^{-11[/tex] x 8,000 x 0.5/1.5 x 1.5
= 26680 x [tex]10^{-11[/tex]/2.25
= 11857.77 x [tex]10^{-11[/tex]
= 1.1858 x [tex]10^{-6[/tex] Newton
In other words, two spherical objects of masses 8,000 kg and 5.0 kg separated by a distance of 1.5 would have a gravitational force of attraction of 1.1858 x [tex]10^{-6[/tex] Newton between them.
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How do you calculate grams to molecules?
you have a sample contianing 4.92x10^23 molecules of nitrogen dioxide. how many grams of nitrodgen dioxide do you have
As a result, 6.022 x 10 23 molecules of water weigh 18.02 g. A mole of sodium chloride (6.02 x 1023 formulas) weighs 58.44 g.
A substance's mole is equivalent to 6.022 x 1023 of that material (such as atoms, molecules, or ions). One mole, or 6.022 x 1023 molecules, is equal to one gram's worth of any given substance's molecular mass. Thus, a mole of oxygen (O2) weighs 32 kilos and has a molecular mass of 6.022 1023.
12 grams of pure carbon-12 weigh exactly one mole, or 6.022 x 1023 atoms, making one mole equivalent to 12 grams of pure carbon-12. • Avogadro's Number refers to the quantity of particles contained in one mole (6.0221421x1023).
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Which argument supports the claim that dissolving calcium chloride (CaCl2) in water is a chemical change
The argument that supports the claim that dissolving solid calcium chloride (CaCl2) in water is a chemical change is A. The ionic bond among calcium and chloride ions has been broken..
When solid calcium chloride is added to water, the ionic bonds between the calcium ions (Ca2+) and chloride ions (Cl-) are broken apart by the polar water molecules. The calcium ions and chloride ions are then surrounded by the water molecules, forming a new chemical compound called calcium chloride hydrate (CaCl2*xH2O) which is different from the original solid calcium chloride. This process is a chemical change because it creates new substances and the original chemical bonds are broken and new bonds are formed.
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the complete question is:
Which of the following arguments supports the claim that dissolving calcium chloride (CaCl2) in water results in a chemical change?
A. The ionic bond among calcium and chloride ions has been broken.
B. By evaporating the water, the solid calcium chloride can be recovered.
C. The ions found in the solid remain in the solution and have not changed.
D. Ions are attracted by the polar water molecules.
Protactinium-234 has a half-life of 1 minute. How much of a 400. g sample protactinium would remain after 4 minutes
After 4 minutes, 200 g of protactinium-234 would remain.
What is protactinium-234?Protactinium-234 is a radioactive isotope of protactinium. It is a fission product that is produced when uranium atoms undergo fission. It has a half-life of 1.17 minutes and decays via beta-decay to uranium-234. It is the most stable isotope of protactinium and is found in very small quantities in uranium ore. The main uses for protactinium-234 are for research, nuclear medicine and nuclear power. In research, it can be used to study properties of fission products and to measure the efficiency of nuclear reactors. In nuclear medicine, it can be used to detect cancers and other conditions. Finally, it can be used in nuclear power plants to help regulate and control the flow of energy.
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(HURRY) Watch the Candy Shop video. In this reaction, a student determined that the mass of the carbon product was less than the mass of the sulfuric acid and sugar that were combined. How would you account for this loss of mass? Use evidence and scientific reasoning to support your answer
The loss of mass can be accounted for by the energy released during the reaction. When the sulfuric acid and sugar mix, the reaction produces carbon dioxide gas, which has a much lower mass than the original reactants. This is because the reaction releases energy as heat, which causes the molecules to break apart and form the gaseous carbon dioxide.
What is molecule?Molecule is the smallest unit of a substance that has all the properties of that substance and is made up of two or more atoms bonded together. Molecules can either be made of elements or a combination of elements and compounds. Molecules can be described as the building blocks of matter, made up of atoms. Atoms are made up of protons, neutrons, and electrons, and the arrangement of these particles determine the type of molecule.
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2 points of the water molecule are the paired ______ and _______ electrons from the oxygen atom and ________ electron from each H atom
The other 2 points of the water molecule are the paired _________ electrons of the oxygen atom.
I get what the question is asking and I know general idea of the answer. I just can't for the life of me figure out what exact wording I am supposed to use that will fit these blanks
To solve this we must be knowing each and every concept related to chemical Compound. Therefore, The other 2 points of the water molecule are the paired two electrons from the oxygen atom and one electron from each H atom.
What is chemical Compound?Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.
There are two types of chemical compound one is covalent compound and other is ionic compound, covalent compound formed by sharing of electron and ionic compound formed by complete transfer of electron. The other 2 points of the water molecule are the paired two electrons from the oxygen atom and one electron from each H atom.
Therefore, The other 2 points of the water molecule are the paired two electrons from the oxygen atom and one electron from each H atom.
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4 The Mr of sodium hydroxide is 40. How many grams of sodium hydroxide are there in: a 500 cm³ of a molar solution? b 25 cm³ of a 0.5 M solution?
There are 20 grams of Sodium hydroxide in a molar solution that has a volume of 500 cm3.
Sodium hydroxide – what is it? (NaOH)Caustic soda and lye are two other names for sodium hydroxide. It is a typical component of soaps and cleansers. Sodium hydroxide seems to be a white, unscented solid at room temperature. Sodium hydroxide is a colorless, odorless liquid. Strong acids and water can cause explosive reactions with it.
Molarity is calculated by
moles (solute) / volume of solution in L
No. of moles = mass / molar mass
We have to find mass of sodium hydroxide (NaOH)
As we know, in 1 L (1000 cm³) of molar solution there is 40 gram of NaOH present.
From using this statement, 500 cm³ of a molar solution, means half liter of a molar solution contain -
= 40 / 2
= 20 gram of NaOH.
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How do you most effectively increase the buffering capacity of a pH 4.9 buffer containing acetate (pKa 4.76)
A conjugate base solution with a pH between 8 and 10 has little buffer capacity, however at higher pHs, the strong base's presence begins to matter more.
Because of the large concentration of H + cations, a pure acetic acid solution with a pH below 3 already has a pH that is resistant to changes. This is because the concentration of the capacity is so high that it is unaffected by changes in the equilibrium of the solution brought on by the concentration of other ions. Why is a buffer more effective if its pKa is close to the pH? Why does a buffer function best when pH and pKa are equal? Why does increasing the pH by a basic or an acid.
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A solution is created by dissolving 12.0 grams of ammonium chloride in enough water to make 255 mL of solution. How many moles of ammonium chloride are present in the resulting solution
The number of moles of ammonium chloride present in a solution created by dissolving 12 grams of ammonium chloride in water to make 255 ml solution is 0.224 mol.
The number of moles of a substance is defined as the ratio of the mass of the substance to the molar mass of the substance. It is denoted by "n". It is given as
n=mass/molar mass
Given,
mass of ammonium chloride= 12 grams
we know that,
atomic mass of Nitrogen(N) = 14g /mol
atomic mass of Hydrogen (H) = 1 g/mol
atomic mass of Chlorine (Cl)= 35.5 g/mol
molar mass of ammonium chloride (NH₄Cl)
= ( 14+ 1×4 + 35.5) g/mol
=53.5 g/mol
therefore,
number of moles of ammonium chloride
= mass/molar mass
=12g/53.5gmol⁻¹
=0.224 mol
Thus, 0.224 moles of ammonium chloride are present in the resulting solution.
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what are the two quantities in this module for which we will develop unit factors to do dimensional analysis with chemical substances?
The two quantities in this module for which we will develop unit factors to do dimensional analysis with chemical substances are mass (usually measured in grams) and volume (usually measured in liters).
Developing Unit Factors for Mass and Volume in Chemical SubstancesUnit factors are developed to convert between two different units of measurement, in this case, mass and volume. We can do this by multiplying the given value by the appropriate unit factor to convert the given value from one unit to the other. For example, if we are given a mass of 10 grams, we can convert this to liters using the unit factor 1 gram = 1 liter. Thus, 10 grams = 10 liters.
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What volume of oxygen is needed to completely react with 171.9 g of S8 at STP?
S8(s) +1202(g) →8S03(1)
All chan
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, the volume of oxygen needed to completely react with 171.9 g of S8 at STP is 180.09L.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
S[tex]_8[/tex](s) +12O[tex]_2[/tex](g) →8SO[tex]_3[/tex](l)
171.9 g of S8
mole of S[tex]_8[/tex]= 171.9 g/ 256.52g/mol
=0.67mol
The mole of oxygen = 12×0.67
= 8.04mol
volume of oxygen= 22.4× 8.04
=180.09L
Therefore, the volume of oxygen needed to completely react with 171.9 g of S8 at STP is 180.09L.
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How many grams are in 0.89 moles of CaCI2
0.0080 grams are in 0.89 moles of CaCI₂.
What is mole ?
The mole (M) is defined as it contain exactly 6.023 × 10²³ elementary entities present in it. 1 mole is exactly equal to the 6.023 × 10²³ elementary entities.
We can solve the above problem as follows;
So,
1 Mole of substance = Molar mass of the substance.
The given compound named is Calcium Chloride.
Then,
Molar mass of Calcium chloride = 1 mole
Molar mass of CaCl₂ = 40 + 2 × 35.4
= 110.9g/mol
Therefore,
110.9 grams of CaCl₂ = 1 mole
1 gram of CaCl₂ = 1 / 110.9
0.89 grams of CaCl₂
= 1 / 110 × 0.89
= 0.0080 grams
Thus, 0.0080 grams are in 0.89 moles of CaCI₂.
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what is the likely composition of the indicator solution when the intermediate or transistion color is observed in step 6
A blend of dyes called a universal indicator gradually changes color throughout a pH range of 4 to 14. The color serves as a direct indicator of pH.
Thymol blue, methyl red, bromothymol blue, and phenolphthalein are the primary ingredients of a universal indicator in the form of a solution. Colors ranging from yellow to red denote an acidic solution, whereas colors ranging from blue to violet denote an alkaline solution and green denotes a neutral solution. Substances called indicators are those whose solutions change color as the pH changes. We refer to these as acid-base indicators. The conjugate base or acid versions of these typically weak acids or bases have various hues because of variations in their absorption spectra.
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What is the nuclear symbol for an ion with a charge of +220 protons and 24 neutrons 
Answer:
Hey there! The nuclear symbol for an ion with a charge of +220 protons and 24 neutrons would be written as follows:
220+ 24
The symbol consists of two parts: the atomic number (220+) and the atomic mass (24). The atomic number is the number of protons in the nucleus of an atom, and it is represented by a superscript on the left side of the symbol. The atomic mass is the total number of protons and neutrons in the nucleus, and it is represented by a subscript on the right side of the symbol.
In this case, the atomic number of the ion is 220, which indicates that it has 220 protons in its nucleus. The atomic mass is 24, which indicates that it has a total of 220 protons + 24 neutrons = 244 particles in its nucleus.
________________________________________________________
How do we represent the properties of atoms and ions using nuclear symbols?Nuclear symbols are a way of writing down the important information about atoms and ions in a short and easy-to-read format. They usually consist of two parts: the atomic number and the atomic mass. The atomic number tells us how many protons an atom has in its nucleus, and the atomic mass tells us the total number of protons and neutrons. For example, the nuclear symbol for carbon is 6 12C, which tells us that carbon has 6 protons and 12 particles (6 protons + 6 neutrons) in its nucleus.
How do we determine the number of protons, neutrons, and electrons in an atom or ion?To determine the number of protons in an atom or ion, we can look at its atomic number, which is usually written as a superscript on the left side of the nuclear symbol. For example, if the nuclear symbol for an atom or ion is written as 6 12C, we can tell that it has 6 protons. To determine the number of neutrons, we can subtract the atomic number from the atomic mass. For example, if the atomic mass is 12 and the atomic number is 6, then the number of neutrons is 12 - 6 = 6. To determine the number of electrons, we can just look at the overall charge of the atom or ion. If it is neutral, then it will have the same number of protons and electrons. If it is positive or negative, then it will have more or fewer electrons than protons, respectively.
A double replacement reaction will occur is a precipitate is formed, or a gas is formed, or a ________ is formed.
A double replacement reaction will occur is a precipitate is formed, or a gas is formed, or a solvent is formed.
What is solvent?Solvent is a substance that is capable of dissolving other substances, resulting in a homogeneous mixture. Solvents are used in many industrial and household processes, including cleaning, extraction, and purification. Common solvents include water, alcohols, ketones, acids, and bases. Solvents can be used to dissolve both organic and inorganic substances. They are often used to separate mixtures of different substances, as well as to dissolve and purify them. Some solvents are miscible with one another, while others are not. Solvents can also be used to dissolve and disperse solids in a liquid.
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PLS HELP ASAP PLSSSS
if you start with 5.5 grams of sodium fluoride how many grams of magnesium fluoride will be produced
From 5.5 grammes of sodium fluoride, 4.1 grammes of magnesium fluoride will be created. The inorganic substance MgF2 stands for magnesium fluoride.
It naturally occurs as the rare mineral sellaite and is a white crystalline salt that is transparent over a broad range of wavelengths and has commercial use in optics used in space telescopes. With the formula NaF, sodium fluoride (NaF) is an inorganic substance. It is utilised in minute quantities in toothpaste, metallurgy, and as a flux in addition to fluoridating drinking water. It is a white or colourless substance that easily dissolves in water. Pharmaceutical manufacturers frequently use it as a source of fluoride. Mass in grammes is equal to 0.06548 times 62.301 grammes of MgF2.
= 0.06548 /62.301 = 4.1grams
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