If the volume of the balloon was 4.21L when the temperature was 25.0°C, 8.42L will be the volume of the balloon be when the temperature is 50.0°C. if Mass and pressure is constant.
What is the relation between Volume and temperature?The volume of a fixed mass of gas is linearly proportional to temperature at given constant pressure. In simple words the volume of a fixed mass of a gas reduces when it is cooled and increases when the temperature is raised.Hence, in the above case it is shown that temperature is rising twice of its original value so, the volume of that given mass of gas in the balloon will also increase by twice.
Solution:
4.21L=25.0°C
4.21L×2=50.0°C
8.42L=50.0°C
8.42L will be the volume of the balloon be when the temperature is 50.0°C.
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When the conductivity is at a minimum, what must be true about the amount of Ba(OH)2?
When the conductivity is at a minimum, the true thing about the amount of Ba(OH)₂ is that the amount of the two reactants are the same when conductivity is low.
What is conductivity?The ability of an aqueous solution to carry an electric current is measured by its conductivity. Ionic strength is measured by conductivity monitors. In automated chromatography systems, conductivity is the main input control parameter used to enable the generation of salt gradients or to control buffer dilution or in-line buffer preparation.
Conductivity monitors can be used to automate and monitor cleaning and equilibration procedures. It's important to remember that temperature affects measurements of conductivity and pH.
When conductivity is low, the amounts of the two reactants are equal. Between the reactants, there are no excesses. The aqueous solution cannot dissolve the precipitate BaSO₄. Since there are no ions, the conductivity is at its lowest.
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Complete question
The Ba(OH)₂ dissociates as Ba+2 + 2 OH-. H₂SO₄ dissociates as 2 H+ + SO₄-2. When the conductivity is at a minimum, what must be true about the amount of Ba(OH)₂ compared to H₂SO₄
Calculate the mass of compound (molar mass = 256 g [tex] mol {}^{-1} [/tex] ) to be dissolved in 75g of benzene to lower its freezing point by 0.48K
( [tex]K _{f} = 5.12 \: K \: \: kg \: mol { }^{ - 1} [/tex] )
thankyou.
The mass of the compound is calculated by freezing point depression formula which is ΔTf=Kf×W₂×1000/M₂×W₁ which is equal to 3125 g.
What is a compound?Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.
Freezing point depression is calculated by the formula, ΔTf=Kf×W₂×1000/M₂×W₁ .Therefore,W₁=5.12×75×1000/0.48×256=3125 g.
Thus, mass of compound is 3125 g.
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How is the rock in the deep mantle similar to the rock in the parts of the mantle nearest to the surface? How are they different?
They are distinct Similarity: Compared to crustal rocks, mantle rocks have higher concentrations of magnesium and iron. The deep mantle's rocks are under extreme pressure and heat.
A mantle is what?Earth's interior is made up primarily of the mantle, which is solid. Between the thin crust at the surface of the planet and its dense, extremely hot core is the mantle. A staggering 84% of the volume of the Earth is made up of the mantle, which is around 2,900 kilometers 1,802 miles thick.
The mantle layer is how thick?The thickest layer on Earth measures just under 3,000 kilometers 1,865 miles. The beginning is only 18.6 miles 30 kilometers below the surface. It is thick, heated, and semi-solid like caramel candy, mostly made of iron, magnesium, and silicon. It circulates, much like the layer beneath it.
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This is Yolanda's desk. What could Yolanda do to increase the amount of force needed to move the desk?
Answer:
The last one.
Explanation:
The other ones add more force or give the same but the last one reduces it.
Imagine that you are a scientist working in a very dry desert environment. This location has been experiencing a terrible drought, so there has been very little rainfall over the last few years. The drought is affecting the local farms, especially the farms that grow corn. You are asked to help choose a variety of corn that will grow the best in these drought conditions.
Which of the four varieties of corn that you tested in the lab would you choose?
Sunburst Variety
Golden Kernel Variety
Chok Full 'O Goodness Variety
Cob-o-Rama Variety
Why do you think this variety is the best choice?
Based on the information provided, I would recommend the Sunburst Variety of corn as the best choice for growing in the drought conditions of the desert environment.
What is the corn about?Sunburst Variety of corn has been specifically developed to be drought-tolerant, meaning that it can survive and produce a good yield even with minimal rainfall.
Therefore, I would recommend the Sunburst variety of corn as the best choice for growing in the desert environment due to its drought-tolerance, deep root system, heat tolerance, high yield, and good quality grain.
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Explain how an incorrect of dietary information on high blood sugar could potentially affect the patient’s
Long-term (months or years) high blood sugar levels can cause irreversible harm to organs such the kidneys, blood vessels, eyes, nerves, and nervous system. Speak with your doctor or the diabetes care team if you frequently have hyperglycemia.
What effects could an extremely high blood sugar level have on us?If left untreated, having excessive blood sugar levels for an extended length of time might lead to major health issues. In addition to raising the risk of heart disease, stroke, kidney illness, vision issues, and nerve issues, hyperglycemia can harm the blood arteries that provide blood to essential organs.
What dietary requirements are impacted by diabetes?A high-fat, high-calorie, and high-cholesterol diet
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which nucleus experiences a stronger net force holding its protons and neutrons togeter unanium or or barium
Answer:
Uranium experiences a stronger net force holding its protons and neutrons together than barium.
Explanation:
Drawings/ diagram of polyatomic ions (structural formula)
PLEASE HELP I NEED IT
GIVING 100 points
PLEASE IT MAKE FAIR I NEED IMAGES OF IT
Polyatomic ions are ions made up of more than one atom.
What are Atoms?
Atoms are the smallest particles of matter that make up all objects. They are composed of protons, neutrons, and electrons. Protons and neutrons make up the nucleus of the atom, while electrons orbit around the nucleus. Atoms are the basic units of matter and are the building blocks of all living and nonliving things.
Polyatomic ions are ions that consist of two or more atoms covalently bonded together and carrying a net electric charge. Examples of polyatomic ions include nitrate (NO3−), sulfate (SO42−), phosphate (PO43−), and carbonate (CO32−).
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A dairy is mainly involved in the operations of bottling of milk, making ice-cream and limited production of cheese. Calculate the BOD produced per 1000kg of milk processed and its population equivalent from the following data;
Quantity of milk processed daily=150000kg Waste water produced daily =240m3 BOO of waste water =1400mg/I Population equivalent per capita per day of 5-days BOD at 20C°=75g
Answer:
BOD produced per 1000kg of milk processed = (1400mg/I x 240m3) / 150000kg = 0.192mg/I
Population equivalent = (0.192mg/I x 75g) / 5 = 0.576g
Explanation:
Chemicals released into the air from human activity, such as sulfur dioxide and nitrous oxide, interact with the atmosphere to make acid rain.
in which atmosphere layer does this process happen?
A, thermosphere
B, mesosphere
C, troposphere
D, stratosphere
I NEED HELP ASAP!!!!!!
Troposphere atmosphere layer does this process happen The acidity of rainwater comes from the natural presence of three substances (CO2, NO, and SO2) found in the troposphere
What is troposphere?The lowest part of Earth's atmosphere is called the troposphere. The troposphere contains the majority of the mass of the atmosphere (about 75–80%). The troposphere is where most clouds of all varieties may be found, and this is also where most weather takes place.The lowest portion of our atmosphere is called the troposphere. It begins below the surface and rises to a height of roughly 10 kilometers (6.2 miles, or about 33,000 feet) above sea level. The troposphere, where we are located, is the lowest layer where most weather happens.Most weather occurrences occur in the troposphere, which is the first and lowest layer of the Earth's atmosphere. It includes 99% of the planet's water vapour and aerosol mass and 75% of the total mass of the planetary atmosphere.To learn more about troposphere refers to:
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What effect does light have on the growth of plants?
Select all that apply.
Light does not have any effect on a plant’s growth.
Light makes a plant’s stem grow shorter.
Light makes a plant’s leaves turn brown.
Light will make a plant’s leaves grow bigger.
Answer:
The answer is the last one only.
Explanation:
Light/sun gives energy and growth which makes the plants leaves/plant grow bigger.
Explanation:
Without the sun, plants wouldn't get the food that's needed to grow, reproduce and survive. plants need sunlight, water and carbon dioxide to live.
PLEASE HELP! 80 POINTS
Create a VESPR drawing for
NH3
CH20
N3
SO2CI2
BrF5
The VSEPR drawing for the compounds in the question are shown in the images attached.
What is the VSEPR theory?We have to know that according to the valence shell electron pair repulsion theory, the structure of the molecule can be found by looking at the number of electron pairs that surround the central atom in the molecule.
Now the structure of the compounds as we can see in the images that ahve been attached are based on the Vlence Shell electron pair repulsion drawing for each of the compounds that we have mentioned in the question.
We can see that the structure of the compound must have a central atom and then the other atoms in the molecule are arranged around the central atom of the molecule.
The molecule would have a definite shape that is based on the number of electron shells in the molecule.
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what is the number of moles of water in 100 g of vinegar?
Answer:
The number of moles of water in 100 g of vinegar is 0.47 moles.
Explanation:
The density of oxygen gas at a certain temperature and pressure is 1.345 g cm-3. How many oxygen atoms are present in 2.0 L of oxygen gas at this same temperature and pressure?
The number of oxygen atoms present in 2.0L of oxygen gas at same temperature and pressure is 5.1 × 10²² atoms.
How to calculate number of atoms?The number of atoms of a substance can be calculated by multiplying the number of moles in the substance by Avogadro's number (6.02 × 10²³).
no of atoms = no of moles × 6.02 × 10²³
According to this question, the density of oxygen gas at a certain temperature and pressure is 1.345 g cm-³. If 2.0 L of oxygen gas is given, the mass of the oxygen gas can be calculated as follows:
mass = 1.345 × 2 = 2.69grams
moles = 2.69g ÷ 32g/mol = 0.084moles
No of atoms = 0.084 mol × 6.02 × 10²³
no of atoms = 5.1 × 10²² atoms
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The mass of copper nitrate produced from reacting 3.65g of copper and 5.16g of nitric acid
The mass of copper nitrate produced in the reaction 3.65g of copper and 5.16g of nitric acid is 3.84g.
What gas is produced when copper combines with nitric acid?Nitric acid reacts with copper
4 HNO3(l) + Cu(s) ==> Cu(NO3)2(s and aq) + 2 NO2(g) + 2 H2O(l)
Deep blue colour characterises the copper nitrate salt that develops. Nitrogen dioxide is the gas that is created when strong nitric acid and copper interact. This maroon mist is nitrogen dioxide.
Copper :
=> mass copper nitrate
=> 3.65g Cu x 1mol of Cu/63.546 g Cu x 1 mol copper nitrate / 1 mol cu x 187.56 g/mol copper nitrate
=> 10.77g
HNO3 (Nitric acid):
=> Mass copper nitrate =3.65 g HNO3 X 1 mol HNO3/63.546 g HNO3 x 1mol of copper nitrate /4 mol HNO3 x 187.56 g/mol copper nitrate.
=> 3.84g.
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in this task, you’ll observe a chemical reaction between baking soda and vinegar. How do you think the temperature of the reactants and the rate of reaction are related? Write a hypothesis to predict the relationship between the two parameters.
The temperature of both the reactants and the pace of reaction are correlated in the chemical reaction of baking soda and vinegar the warmth of the reactants causes a raise in the rate of action and vice versa.
Which is a chemical reaction *?When two or more compounds come into touch with one another and create a new substance, the process is known as a chemical reaction (s). Reactants or reagents are the name(s) for the substance(s) or substances that are initially incorporated into the chemical process.
What's the most important chemical reactions?A few synthesis processes can produce several products. One of the more significant chemical processes on Earth is photosynthesis. It enables some microorganisms and plants to transform carbon dioxide gas and water into storable glucose and oxygen. For life to exist on Earth, we need this oxygen.
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Need help ASAP 100 points!
How many molecules are in 2.3 moles of Oxygen?
Question 1 options:
2.06 x 1023 molecules
6.02 x 1023 molecules
1.4 x 1023 molecules
3.8 x 1023 molecules
1.4 x 1023 molecules are present in 2.3 moles of oxygen.
How many molecules will be in the 2.3 moles of oxygen?We know that if we multiply the 2.3 moles of oxygen with Avogadro's number which is 6.023 x 1023 then this will give us the number of molecules which is present in the 2.3 moles of oxygen and which is 13.85 x 1023.
Mole is a standard scientific unit for measuring large quantities of very small entities like atoms, molecules, or other specific particles. The mole entitles an extremely large number of units about 6.02214076 × 1023.
So we can conclude that by multiplying Avogadro's number with the 2.3 moles of oxygen then it will give us 1.4 x 1023 molecules.
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How many oxygen atoms are in 1.00 kg of carbon dioxide?
Answer: I believe its two
Explanation:
At which of the following temperatures is the average kinetic energy of molecules od a substance greatest
Answer:
Correct option is C)
Kinetic Energy at 20
o
C=293K
=3/2K
B
T=3/2K
B
(293)J=K.E
1
kE
2
=2K.E
1
2
2
3
K
^
B
(293)=
2
3
K
^
B
T
T=586K
=313
o
C
Due to friction between a tire and the road surface, the temperature of the air inside a tire increases as one drives. if the tire pressure is 179 kPa when the car is in the driveway at 5.0 C, what is the pressure of the gas inside the tire when the temperature of the gas increases to 35 C? Assume tire volume and number of particles remain constant
Answer:
40.10 atm. is answer i think ....
Classify each of the following amines as primary (1°), secondary (2°), or tertiary (3°):
Drag the appropriate items to their respective bins.
Primary (1°) amine
Secondary (2°) amine
Tertiary (3°) amine
Functional group can be interconverted into each their by the means of suitable reagent. Functional group are responsible for the chemical and physical properties of a compound. Therefore in the below given ways compound can bee classified.
What is functional group?A group of atoms forming a component of a molecule that accounts for a particular function or chemical behavior is called a functional group. There are so many functional group in organic chemistry.
first compound-------- secondary (2°)
second compound-------------- secondary (2°)
third compound-------------------- tertiary (3°)
fourth compound ----------------primary (1°)
fifth compound---------------primary (1°)
Therefore in the above given ways compound can bee classified.
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Which of the following best represents the structure of an amino acid in basic solution (pH = 11)?
Answer:
Explanation:
In basic solution (pH = 11), an amino acid typically exists in its zwitterionic form. This means that the amino acid has both a positive and a negative charge, due to the presence of both a basic amino group (-NH2) and an acidic carboxyl group (-COOH).
The structure of an amino acid in basic solution (pH = 11) can be represented as follows:
The central carbon atom (also known as the alpha carbon) is bonded to a hydrogen atom, an amino group (-NH2), a carboxyl group (-COOH), and a side chain R group.
The amino group is positively charged due to the loss of a proton (H+).
The carboxyl group is negatively charged due to the gain of a proton (H+).
Overall, the amino acid has a net charge of zero, due to the equal and opposite charges of the amino and carboxyl groups. This is known as the zwitterionic form of the amino acid.
Here is a visual representation of the structure of an amino acid in basic solution (pH = 11):
H |
N-C-COOH
|
R
Regenerate response
Nitrogen monoxide and oxygen can be formed from the thermal decomposition of nitrogen dioxide.
2NO2 (g) = 2NO (g) + O₂(g)
In an experiment, 4 moles of nitrogen dioxide were put into a 1.0 dm³ container and heated
to a constant temperature. The equilibrium mixture contains 0.8 moles of oxygen.
What is the value of the equilibrium constant, Kc?
1.5 POINTS
A
C
E
LU
0.032
0.853
0.426
B
D
0.222
0.356
FINISH QUIZ
Answer:
0.355 moldm^-3
Explanation:
As long as proper
safety precautions have been taken, why can explosives be transported long distances without exploding?
use the kinetic particle model to describe the motion and separation of the particles in solid carbon dioxide and carbon dioxide gas
In solid carbon dioxide (dry ice), the particles are held together by strong covalent bonds, so they do not move around much.
What is the carbon dioxide?
Carbon dioxide (CO2) is an odorless, colorless gas created through natural processes such as respiration, combustion and the breakdown of organic materials. As a greenhouse gas, it is a major component of the Earth’s atmosphere and plays a critical role in regulating the global climate. Carbon dioxide is made up of one carbon atom and two oxygen atoms, and is produced when fossil fuels such as coal and oil are burned. Plants and trees also use carbon dioxide as part of their photosynthesis process. Carbon dioxide is essential for life on Earth, however, too much of it can have a negative impact on our planet. As human activity has increased over the past century, so too has our production of CO2, resulting in higher concentrations of this gas in the atmosphere and contributing to global warming.
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determine the mass of IF5 in a 15.88 L sample at 378 K and 0.935 atm
The mass of [tex]IF_5[/tex] that would be in a 15.88 L sample at 378 K and 0.935 will be 106.51 grams.
Ideal gas problemThe problem can be solved by first using the ideal gas equation to know the number of moles of the gas that is present.
PV = nRT
P = 0.935, V = 15.88 L, T = 378 K, R = 0.082
Making n the subject of the formula:
n = PV/RT
= (0.935x15.88)/(0.082x378)
= 0.48 moles of the gas
Recall that, mass = mole x molar mass
The molar mass of [tex]IF_5[/tex] is 221.89 g/mol
Mass of 0.48 moles [tex]IF_5[/tex] = 0.48 x 221.89
= 106.51 grams
In other words, the mass of [tex]IF_5[/tex] that would be in a 15.88 L sample at 378 K and 0.935 is 106.51 grams.
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Although the seventh branch of the municipal police station has a close relationship with the community, the crime data is still higher than in previous years.
Answer:
The seventh branch of the municipal police station has implemented various initiatives to improve the relationship between the police and the community, including increased community engagement, increased police visibility, and increased collaboration between the police and local organizations. Despite these efforts, crime data has still increased over the past year, indicating that more needs to be done to reduce crime in the area.
Explanation:
What are the units of the rate constant for each of the reactions in Table 12.2?
Rate Law
Rate = k [(CH₃ )₃ CBr]
Rate = k [Br₂]
Rate = K[ BrO₃⁻ ][Br⁻] [H⁺]²
Rate = k [ H₂][I₂]
The first reaction is a first order reaction and the unit of rate constant is s⁻¹. The second one is also a first order reaction with the same unit. Third one is a third order reaction with the unit for k as L² mol⁻² s⁻¹.
What is rate constant?Rate of a reaction is the rate of decrease in concentration of the reactants or increase in concentration of the products. The rate is directly proportional to the concentration of reactants and the rate law is written as:
rate = k [reactants]
where, the proportionality constant k is called the rate constant.
The order of a reaction is the sum of powers of the molar concentration of reactants. Thus, each reaction vary in order and the order of reaction also depends on the steps in the reaction.
The general formula of the unit of rate constant is L⁽ⁿ⁻¹⁾ mol⁽¹⁻ⁿ⁾ s⁻¹. Hence, first reaction is a first order reaction and the unit of rate constant is s⁻¹. The second one is also a first order reaction with the same unit.
Third one is a third order reaction with the unit for k as L² mol⁻² s⁻¹. The fourth one is a second order reaction. Thus, unit of rate constant is L mol⁻¹ s⁻¹.
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Help me please please i is in middle school need help ple
the answer is that it is a
Calculate the mass percent composition of nitrogen in each nitrogen containing compound
Mass percent of a compound=(mass of element in molecule/total mass of compound)×100 (a) 63.64%
What is mass percentage composition ?We use the concept of mass percentage composition to explain the concentration of an element in a compound or a component in a combination. This word refers to the overall percent by mass of each element present in a compound.
In chemistry, a compound's percent composition is calculated by dividing its total amount of each elements by the compound's total amount, multiplied by 100. The following formula determines an element's percentage composition:
(gE/gT) = %CE 100
Here, %CE stands for the element's composition in percent.
How to calculate the percentage of each element by mass makes up each compound?
To get the mass percent of an element in a compound, multiply the result by 100 after dividing the mass of the element in 1 mole of the compound by the compound's molar mass.
Calculating total mass of HNO3
= 1 x 1 + 14 x 1 + 16 x 3
= 1 + 14 + 48
= 63
Calculating the mass percentage of Nitrogen in HNO3
= 1/63 x 100
= 1.586 %
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