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belka [17]
3 years ago
12

In which instance is a gas most likely to behave as an ideal gas?A.) At low temperatures, because the molecules are always far a

partB.) When the molecules are highly polar, because IMF are more likelyC.) At room temperature and pressure, because intermolecular interactions are minimized and the particles are relatively far apartD.) At high pressures, because the distance between molecules is likely to be small in relation to the size of the molecules
Chemistry
1 answer:
kiruha [24]3 years ago
3 0

Answer:

C.) At room temperature and pressure, because intermolecular interactions are minimized and the particles are relatively far apart.

Explanation:

For gas to behave as an ideal gas there are 2 basic assumptions:

  • The intermolecular forces (IMF) are neglectable.
  • The volume of the gas is neglectable in comparison with the volume of the container.

<em>In which instance is a gas most likely to behave as an ideal gas?</em>

<em>A.) At low temperatures, because the molecules are always far apart.</em> FALSE. At low temperatures, molecules are closer and IMF are more appreciable.

<em>B.) When the molecules are highly polar, because IMF are more likely.</em> FALSE. When IMF are stronger the gas does not behave as an ideal gas.

<em>C.) At room temperature and pressure, because intermolecular interactions are minimized and the particles are relatively far apart.</em> TRUE.

<em>D.) At high pressures, because the distance between molecules is likely to be small in relation to the size of the molecules.</em> FALSE. At high pressures, the distance between molecules is small and IMF are strong.

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In a laboratory experiment, a fermenting aqueous solution of glucose and yeast produces carbon dioxide gas and ethanol. The solu
Wewaii [24]

Answer:

1 and 2 - Physical change

3, 4, 5 and 6 - Chemical Change

Explanation:

A physical change is the conversion of one form into another. Like water is in natural state is liquid but at applying negative temperature like in a freezer, it will convert into ice which is just another form of water. At high temperature, water will convert into vapors and form steam. In all three states, water is just water in a different form. That's what a physical change is. It is a reversible process.

A chemical change is the conversion of one molecule into another form which cannot be reversed. Like burning of coal. You won't get coal after you have burnt it.

In the same experiment, there have been many physical and chemical changes.

1. Evaporation of Ethanol is a physical change as external heat is applied which separates ethanol from water in form of vapors.

2. Condensation of Ethanol is also a physical change where vapors of ethanol are being converted into liquid form.

3. Formation of carbon deposit inside the flask: This is a chemical change. As the experiment contained glucose, upon higher temperatures, glucose loses water molecules and forms carbon. Now, since we cannot convert carbon back to glucose in a simple step, therefore, it is a chemical change which cannot be reversed.

4. Formation of Carbon dioxide gas from Glucose: This is a chemical change. Carbon dioxide cannot be fixed into glucose without the help of a plant or certain chemical methods therefore it is a chemical change and cannot be reversed by normal means.

5. Burning of natural gas: It is a chemical process. Natural gas contains methane as the primary source of burning. It reacts with oxygen present in air and forms carbon dioxide and water and releases heat which is used to elevate the temperature of ethanol-water mixture to obtain purified ethanol.

6. Formation of ethanol from glucose by yeast:  It is also a chemical process, biochemical to be specific. Under the absence of air (Fermentation), yeast converts glucose to ethanol which is a chemical process because glucose has been used up and is not glucose anymore. It has been converted to ethanol.

4 0
4 years ago
Which process begins the formation of sedimentary rock? the movement of sediment the cementation of rock sediment the breakdown
max2010maxim [7]

Answer:

C- the breakdown of rock into sediment

Explanation:

Because sedimentary rocks have layers and are made of of those layers which are made up of the breakdown of rock into sediment.

hope this helps:)

5 0
3 years ago
How many molecules are in each of the following compounds or elements?
musickatia [10]

Answer:

0.241  × 10³⁰ molecules

Explanation:

Given data:

Mass of Cr(HCO₃)₃ = 9.273 × 10⁷ g

Number of molecules = ?

Solution:

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Number of moles = 0.04× 10⁷  mol

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

18 g of water = 1 mole = 6.022 × 10²³ molecules of water

1.008 g of hydrogen = 1 mole = 6.022 × 10²³ atoms of hydrogen

For 0.04× 10⁷  moles of Cr(HCO₃)₃:

0.04× 10⁷  moles × 6.022 × 10²³ molecules / 1 mol

0.241  × 10³⁰ molecules

7 0
3 years ago
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Sedbober [7]
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3 0
3 years ago
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katen-ka-za [31]
Basically it means carbon dioxide is removed from the atmosphere and is trapped in e.g. calcium carbonate (like shells), rocks, oceans etc. 
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