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Simora [160]
2 years ago
10

Please select the word from the list that best fits the definition Composed of one type of compound molecule compound mixture ch

emical formula molecular formula pure substance
Chemistry
1 answer:
DaniilM [7]2 years ago
4 0

Answer:

Pure substance

Explanation:

Molecule: contains more atoms of different elements. An example is CO2 molecule. So this option is wrong.

Compound: All compounds are molecules so this option is also wrong.

Mixture: Refers to the union of more than one substances that can be separated.

Chemical and Molecular formular: Represents the constituents of a molecule. This is wrong.

Pure substance: This is the correct option. For an object to be considered pure, it must be composed entirely of one compound.

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If you can plz help ASAP Read the chemical equation.
Svetllana [295]

N2 + 3H2 = 2NH3

in this question, we are dealing with only NH3 and H2 so we only focus on that

since the ratio of H2 to 2NH3 is 3:2, we say that

3 liters of H2 = 2 liters of 2NH3

3.6 litres of H2 = x liters of 2NH3

We cross multiple to give:

3 × x = 3.6 × 2

3x = 7.2

Divide both sides by 3

x = 7.2 ÷ 3

x = 2.4liters

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2 years ago
David has a weather balloon that he fills with helium and then releases. As the balloon rises into the atmosphere, the balloon g
katrin2010 [14]

Answer: B

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3 years ago
How many moles of nitrous oxide gas (N2O) is contained in 20.0 L balloon at a pressure of 1.09 atm and a temperature of 298K? Ro
prohojiy [21]

Answer:

There are 0,89 moles of nitrous oxide gas  in the balloon.

Explanation:

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PV= nRT ---> n= PV/RT

n= 1,09 atm x 20,0 L /0.082 l atm / K mol x 298 K

<em>n= 0,89212637 mol</em>

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7 0
3 years ago
Read 2 more answers
Chemistry gcse
mart [117]
Yes, anything with carbonate, hydrogen carbonate (bicarbonate) at the end is a carbonate.

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