Answer:
Explanation:
C
What is the mass of frutose also known as fruit (c6h12o6) in a 1.40×10^2ml sample of glucose solution that has a concentration of a 1.23m?
Answer:
m = 129,96 g
Explanation:
c = n / V
n = c * V
n = 1,23 mol/l * 0,14 l
n = 0,722 mol
n = m / M
m = n * M
m = 0,722 mol * 180 g/mol
m = 129,96 g
WILL GIVE BRAINLIEST- What is the % of each element in Al2(CrO4)3
Answer:
Al = 13.4% Cr = 38.8% O = 47.7
Aluminium Chromium Oxygen
Explanation:
im so sorry if i am wrong
Alka seltzer and water from
Answer:
ph2h2o
Explanation:
not quite sure explain
What is the Molarity of NaOH if it takes 2L of NaOH to reach the equivalence point in a titration with 5L of 0.4 M HCl? Assume a 1:1 mole ratio.
Answer:
2.4 H[tex]x^{2}[/tex]
Explanation:
Which particle has the same mass as a neutron?
Answer:
proton
Explanation:
neutron: A subatomic particle forming part of the nucleus of an atom. It has no charge. It is equal in mass to a proton or it weighs 1 amu.
Answer:
protons
Explanation:
approximately the same mass
which states of matter only appear in the hydrosphere
What is a chemical reaction that occurs when two or more reactants combine into one product?
A: single-displacement reaction
B: decomposition reaction
C: synthesis reaction
D: combustion reaction
Answer:
The answer should be C. synthesis reaction
Differentiate bonding and non-bonding electrons?
Answer:
bonding electrons are when the electron have the same number and the connect,like valence electrons. Non-bonding electrons are only possible when an atom is unstable, no more than 2 electrons or if the atom is an isotope. bonding electron pairs occur in a covalent bond between two atoms. they include one electron from each atom in the covalent bond. non-bonding pairs do not take part in bonding. they are the left over electrons in the outter shell of the atom.
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Explanation:
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0.00401g is dissolved in 675 000ml what is the concentration of this solution in ppm
Answer:
grams of solute in 1,000,000 mL of solution ... A mass of 0.00401 g of salt is dissolved in 675,000 mL of water.
Explanation:
what types of atoms are in nitrogen
Answer:
2 nitrogen atoms
Explanation:
nitrogen is an element therefore it cannot include any other atom
Is average atomic mass and atomic mass the same
Answer:
The key difference between atomic mass and average atomic mass is that the atomic mass is the mass of an atom, whereas the average atomic mass is the mass of an atom of a particular chemical element calculated by considering isotopes of that element.
Explanation:
Assuming all solvents are suitable to recrystallize the desired product, which solvent is best for removing the impurity through a hot filtration
The solvent that is best for removing the impurity through hot filtration is petroleum ether. It is an organic solvent.
What is Petroleum ether?Petroleum ether is an organic solvent derived from petroleum, i.e., it is a well-known aliphatic hydrocarbon.
Petroleum ether is not a true ether because the word 'ether' makes reference to its extremely high level of volatility.
Moreover, hot filtration is a chemical methodology used for filtering solutions that are able to crystallize when they cool.
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Describe how a Chemical property is different between NaCl and its elements.
Describe how a Physical property is different between NO2 and its elements
Answer:
See detailed explanation.
Explanation:
Hello.
a. In this case, considering sodium chloride, sodium a chlorine a typical chemical reaction could be used in order to stand out their differences. For instance, when mixed with water sodium chloride just dissolves in it, sodium readily reacts yielding sodium hydroxide via a very exothermic chemical reaction which also fires on sodium and hydrogen gas s given off:
[tex]H_2O+Na\rightarrow NaOH+H_2[/tex]
Moreover, chlorine reacts with water to yield hypochlorous acid and hydrochloric acid in a very slow equilibrium reaction:
[tex]H_2O+Cl_2\rightleftharpoons HClO+HCl[/tex]
b. In this case, regarding nitrogen dioxide, nitrogen and oxygen, it is widely known that nitrogen dioxide is a red-brown gas which is also toxic whereas both nitrogen and oxygen are colorless.
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Which is the best term to use when describing the energy of motion?
CORO
chemical
kinetic
potential
thermal
Answer:
kinetic
Explanation:
Create a path in which the carbon atom goes from atmosphere to the hydrosphere, biosphere, geosphere
Answer:
............
Explanation:
Explanation:
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Estimate the normal boiling temperature of propan-1-ol, C3H7OH, given that its vapour
pressure is 2701 Pa at 298 K and 9129 Pa at 318 K.
Based on the data provided, the normal boiling point of propan-1-ol is 93.7° C
What is the normal boiling point of a liquid?The normal boiling point of a liquid is the temperature at which the clvapor pressure of the liquid is equal to the atmospheric pressure.
The Clausius-Clapeyron Equation is used to determine the normal boiling point of liquids.
The Clausius-Clapeyron Equation is given as:
ln (P₁/P₂) = ΔHvap/R × (1/T₂ - 1/T₁)where
ΔHvap is in J/molR = 8.314 J/mol.KFrom the given data:
T1 = 298 K
T2 = 318 K
P1 = 2710 Pa
P2 = 9129
ΔHvap = ?
Substituting the values:
ln ln (P₁/P₂) = ΔHvap/R × (1/T₂ - 1/T₁)
ln (2710/9129) = ΔHvap/(8.314) × (1/318 - 1/298)
ΔHvap = 47843.57 J/molThen at P2 = 101325 Pa
Normal boiling point T₂ can be determined thus:
ln (2710/101325) = 47843.57/8.314 × ( 1/T₂ - 1/298)
T₂ = 366.7 K
T₂ = 93.7° C
Therefore, the normal boiling point of propan-1-ol is 93.7° C.
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how to use potassium clorate, sulphur ,starch and glue these chemicals
Answer:
Hope it help you
Stayhomestaysafe
Plz mark my answer brainliest✍️✍️
Explanation:
Potassium chlorate which is an oxidant is mixed with sulfur, starch and glue to make the tip of matchstick. When we need to light up the fire, we rub the matchstick with the surface of matchbox which offers resistance. The friction between the tip and the surface is the main reason of fire.
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3.Convert 50 degree Celsius to Fahrenheit
Answer:
122 forenhieght
Explanation:
(50°C × 9/5) + 32 = 122°F
when plants lean towards the light, explain what process plants are demonstrating and why.
Plants lean towards the light because light is the energy source for plant growth. When a plant has a higher concentration of auxin on the shady side it causes that side to grow more so it can bend more towards the light. When this process happens, it's called positive phototropism.
Thorium-234 decays by alpha emission to form a new nuclide. Identify the new nuclide.
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What method of separation is used to separate liquids from insoluble solids?
Answer:
Filtration
Explanation:
Filtration This technique is used to separate an insoluble solid from a liquid. It can be used to obtain a product that is free from unreacted chemicals, by-products or solvent.
Answer:
filtration
Explanation:
If a substance does not dissolve in a solvent, we say that it is insoluble . For example, sand does not dissolve in water – it is insoluble. Filtration is a method for separating an insoluble solid from a liquid.
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What element is represented by the following electron configuration?
Answer:
Cobalt
Explanation:
From the question given above, the following data were obtained:
Electronic configuration of element => 1s² 2s²2p⁶ 3s²3p⁶ 4s²3d⁷
Name of the Element =?
Next, we shall determine the number of electrons in the atom of the element. This can be obtained as follow:
Number of electron = 2 + 2 + 6 + 2 + 6 + 2 + 7
Number of electron = 27
Next, we shall determine the number protons in the atom of the element. This can be obtained as follow:
For a ground state element,
Number of Proton = number of Electron
Number of electrons = 27
Number of proton = Number of electron = 27
Number of protons = 27
Therefore, the number of protons in the atom of the element is 27
Next, we shall determine the atomic number of the element. This can be obtained as follow:
The atomic number of an element is simply the number of protons in the atom of the element. Mathematically,
Atomic number = proton number
Number of proton = 27
Finally, we shall determine the name of the element as follow:
Comparing the atomic number of the element (i.e 27) with those in the periodic table, the element is Cobalt since no two elements have the same atomic number.
Consider this chemical reaction. What chemical is reduced?
CH3OH + NAD --> CH2O + NADH
Answer:
CH3OH and NADH
Explanation:
The given chemical reaction is an redox reaction in which reduction and oxidation take place.
In the process of oxidation: electrons are loss while in the process of reduction: electrons are gained.
In the given redox reaction: CH3OH + NAD --> CH2O + NADH
NAD is reduced to NADH as NADH gains one hydrogen electron while CH3OH (methanol) is oxidized to CH2O (methanal) by losing electrons.
So, CH3OH (methanol) and NADH are the reduced forms while NAD and CH2O (methanal) are oxidized forms.
Take a good look at the head lights and tail lights of your family vehicle . How does the shape of the lenses of each and the reflectors aid the light emitted ?
Answer: The shape lets you see a wide area but not blind everyone that is ahead of you though some vehicles are tall and do so anyways or are too close and the reflections make sure the light is brighter forward than to the sides so it can be more effective for seeing in the dark or even during storms.
Explanation: This is just what I know. :/
The units used on the U.S. freshwater withdrawals, 1950-2015 map are listed as Mgal/d. One million gallons of water per day (Mgal/d), covers a football field with about ___ feet of water.
Question 8 options:
0.5
1.2
2.8
5.8
Based on the conversion factor from gallons to cubic foot, one million gallons of water per day will cover a football by 2.3 feet.
What is the conversion from gallons to cubic foot?To convert from gallons to cubic foot the following conversion factors are used:
I gallon = 0.134 cubic foot1 million gallon = 134000 cubic footThe standard area for an American football field = 57,600 square feet
The height which one million gallons of water per day 15(Mgal/d), covers a football will then be:
Height = 134000 cubic foot / 57,600 square feet
Height = 2.3 feet.
Therefore, one million gallons of water per day will cover a football by 2.3 feet.
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Answer:
2.8 I took the test
Explanation:
the nucleus of atom contains which subatomic particles? A. Electrons and Protons B. Protons and Neutrons C. Neutrons and Electrons D. protons onlyns in an atom.
Answer:
Your answer is
B.Protons and Neutrons
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The aftermath of a hurricane demonstrated here is called a
watershed
storm surge
runoff
white cap
A sample originally contained 1.28 g of a radioisotope. It now contains 1.12 g of its daughter isotope.
How many half-lives have passed since the sample originally formed?
Answer:
3
Explanation:
Water is your body's principal chemical component and makes up about 60 percent of your body weight. Your body depends on water to survive. About 20 percent of daily fluid intake usually comes from food and the rest from drinks.The formula to water intake calculator is:c=[w∗ f∗ g+12∗ m30]/8 where:c = fluid amount in cupsw = weight in poundsf = age factor (0.642 for age < 30; 0.56 for 30 < age < 55; 0.481 for age > 55)g = gender factor (1 for male; 0.73 for female)m = exercise time in minutesExample 1: Find the water intake amount for a male of 20 years old, weight 158 pounds, exercise 50 minutes dailySolution: w = 158, f = 0.642 (age < 30), g = 1 (male), m = 50 cups
Answer:
Explanation:
According to the formula provided in the question, the formula for water intake amount is C = [w × f × (g+12) × m × 30]/8
where c is the fluid amount in cups
w is the weight in pounds (158 pounds)
f is the age factor (0.642 because the age is below 30)
g is the gender actor (1 because the individual is a male)
m is the exercise time in minutes (50 minutes)
c = 158 × 0.642 × (1 + 12) × 50 × 30/8
c = 1978001.99/8
c = 247250.25 cups
NOTE: Kindly verify the formula in this question before proceeding to practicing the steps in this answer
A glass cylinder contains four liquids in four separate layers. One liquid is water. The purple liquid has a density 1.62 g/cm3. The yellow liquid has a density of 0.46 g/cm3. The red has a density of 0.91 g/cm3. What is the order of the liquids in the cylinder? Explain your answer. What will happen if you slip a small, flat, chip of wood (density 0.85 g/cm3) into the cylinder?
Answer:
The order of the liquids in the cylinder will be yellow liquid, followed by red liquid, water & lastly purple liquid.The wood is likely to sink in the 1st liquid(yellow) but float on the 2nd liquid(red).Explanation:
The arrangement of the liquids in the cylinder is determined by their densities. Water has a density of 1g/cm3 & that of the others are stated in the question already. Comparing the liquids densities now, we can easily identify the liquid with the lowest density to that of the highest. The liquids with greater densities will sink while those with lower ones wsill float. In this case, the yellow one has the least density of 0.46g/cm3,followed by the red one(0.91g/cm3),water of density 1.0g/cm3 & coming last, the purple liquid(1.62g/cm3)The wood has a density of 0.85g/cm3. This will make it denser than the 1st liquid(yellow) so will sink in it but is lower in density than the next liquid so will float on it.Hope you understand now. I'll appreciate getting brainliest from you if you liked the explanation.
The order of the liquids in the cylinder will be yellow liquid, followed by red liquid, water, and lastly purple liquid. The wood is likely to sink in the 1st liquid(yellow) but float in the 2nd liquid (red).
The densities of the liquids in the cylinder dictate how they are arranged. Water's density is 1g/cm³, and the other densities are previously mentioned in the question. Now that we can compare the liquid densities, we can quickly distinguish between the liquids based on density.
Higher-density liquids will sink, whilst lower-density liquids will float. The yellow liquid in this instance has the lowest density, 0.46 g/cm³, followed by the red liquid (0.9 g/cm³), water (1.0 g/cm³), and the purple liquid (1.6 g/cm³).
The density of the wood is 0.85g/cm³. Because of this, it will become denser than the first liquid (yellow), sink in it, but less dense than the second liquid, float on it.
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