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ohaa [14]
3 years ago
10

2

Chemistry
1 answer:
gayaneshka [121]3 years ago
4 0

Answer:

The answer is A. Key

Explanation:

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Sodium reacts with the oxygen in air. It reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

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Determine the total mass of water formed when 22.67g of NH3 reacts.
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A 0.5 mol sample of He(g) and a 0.5 mol sample of Ne(g) are placed separately in two 10.0 L rigid containers at 25°C. Each conta
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Answer:

Helum (He)g will escape faster

Explanation:

the phenomemenon can be explained by the Graham's law of diffusion.

Graham's law of difussion states that the rate of difussion is inversely proportional to the square root of the molecular mass,which means the gas with lower molecular mass will escape faster.

Helium gas has a molecular mass of 4 while Neon has a molecular mass of 10.

rate of diffusion of He/rate of difussion of Ne=√4/10=√0.4=0.63

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3 years ago
To measure the speed of a car, we use miles per hour (miles/hour or mi/h or mph). To measure the rate of a reaction we use molar
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Part A: 47.8 mi/h

Part B: 0.072 M/s

Part C: 0.144 M/s

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V = 47.8 mi/h

Part B

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Part C

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3 years ago
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