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3 years ago

What is the difference between a solid and a gas

Chemistry

2 answers:

dem82 [27]3 years ago

6 0

Answer:

Gas is for example oxygen or the air we breath and liquid is water.

Explanation:

Salsk061 [2.6K]3 years ago

3 0

Answer:

A solid's molecules are slower.

Explanation:

Gasses have a lot of space in between them, therefore able to move faster then a solid's can. A solid also vibrates in place, whereas gasses move freely. When a gasses molecules slow down, they become a liquid or a solid.

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In this ecosystem, energy storage molecules are found inside organisms.

elena55 [62]

Answer: This is true! Living organisms use two major types of energy storage.

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3 years ago

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How many molecules of sodium oxide will be created if 275 grams of sodium reacts with excess oxygen?

DaniilM [7]

Answer:

1.34 × 10²⁴ molecules

Explanation:

To calculate the number of molecules of sodium oxide that will be created if 275 grams of sodium reacts with excess oxygen, use the chemical equation to calculate the number of moles and then multiply by Avogadro's number.

1) Balanced chemical equation (given):

4Na + O₂ → 2Na₂O

2) Mole ratio:

4 mol Na : 2 mol Na₂O

3) Calculate the number of moles in 275 g of Na:

n = mass in grams / molar mass
mass of Na = 275 g
molar mass of Na₂O = 61.9789 g/mol

n = 275 g / 61.9789 g/mol = 4.437 mol of Na

4) Set a proportion to find the number of moles of product (Na₂O):

2 mol Na₂O / 4 mol Na = x / 4.437 mol Na

x = 4.437 / 2 mol Na₂O = 2.2185 mol Na₂O

5) Convert the number of moles to number of molecules:

# molecules = n × 6.022 × 10²³ molecules/mol = 2.2185 mol × 6.022 × 10²³ molecules/mol = 1.34 × 10²⁴ molecules (rounded to 3 significant figures).

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4 years ago

Pllllzzzzzz help

Nookie1986 [14]

TMS has 12 protons which are all equivalent and four carbons, which are also all equivalent. This means that it gives a single, strong signal in the spectrum, which turns out to be outside the range of most other signals, especially from organic compounds.

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3 years ago

Naoki's bicycle has a mass of 8 kg. If Naoki sits on her bicycle and starts pedaling with a force of 191.4 N, causing an acceler

VladimirAG [237]

58kg

Explanation:

Given parameters:

Mass of bicycle = 8kg

Total force exerted = 191.4N

Acceleration = 2.9m/s²

Unknown:

Naomi's mass = ?