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3 years ago

1. What are the characteristics of a gas?

Chemistry

2 answers:

Harman [31]3 years ago

8 0

Answer:

$\boxed {\boxed {\sf \ Choice \ B }}$

Explanation:

Gas particles possess a great amount of kinetic energy, and they move around rapidly to fill the container they are in. They are also unique for their high compressibility and the fact they occupy a lot of space.

Gas doesn't have a definite shape of volume. So, B (no definite shape or volume) is the correct answer.

Aneli [31]3 years ago

4 0

B is your answer here.

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Which one is NOT part of the cell theory?

worty [1.4K]

<u>Answer:</u>

All living things are not made of cells.

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3 years ago

Oxygen gas, generated by the reaction 2KClO3(s)---2KCl(s)+3O2(g), is collected over water at 27•C in 3.72L vassel at a total pre

Julli [10]

Answer:

moles = 0.093 moles

Explanation:

In this case, we know that this reaction is taking plave in a vessel that has a 730 torr of total pressure.

The total pressure is a value obtained by:

Pt = Pwater + PO2

We need to know the pressure of O2, because then, with stoichiometry, we can calculate the moles of KClO3

The pressure of oxygen is:

PO2 = 730 - 26 = 704 Torr

Now, this pressure is in Torr, and we need to convert it to Atm, so:

704 Torr / 760 Torr = 0.9263 atm

Now, let's use the ideal gas equation:

PV = nRT

With this expression, we will calculate the moles of O2, and then, the moles of KClO3:

n = PV/RT

R = 0.082 L atm /K mol

P = 0.9263 atm

V = 3.72 L

T = 27 + 273 = 300 K

Replacing the data:

n = 0.9263 * 3.72 / 300 * 0.082

n = 0.14 moles

Finally, by stoichiometry, we know that 2 moles of KClO3 produces 3 moles of O2, so:

moles of KClO3 = 0.14 * 2/3 = 0.093 moles of KClO3

6 0

3 years ago

What is the molar mass of NH4?

astraxan [27]

Answer:

NH4

Explanation:

7 0

3 years ago

What quantity measures the amount of space an object occupies?

mylen [45]

The answer would be volume

3 0

2 years ago

For the following equation; ____S8 + ___ O2 à ___ SO2 a. State what type of reaction is taking place? b. Balance the equation c

postnew [5]

Answer:

a) Combustion

b) S8 + 8O2 -> 8SO2

c) 0.125 mol SO2

Explanation:

a) Combustion

b) S8 + 8O2 -> 8SO2

$4.0 g S8 (\frac{1 mol S8}{256 g S8})(\frac{8 mol SO2}{1 mol S8} ) =0.125 mol SO2$

5 0

3 years ago