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Tresset [83]
3 years ago
14

Why did a drop of water need to be added in order to initiate the reaction?

Chemistry
2 answers:
jeka57 [31]3 years ago
5 0

D.because the water is needed to wet the sand and keep the reaction safe

Rufina [12.5K]3 years ago
3 0
I think it’s D . If that’s not it I’m sry I tried lol
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The image shows particles of salt dissolved in water.
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A helium balloon is filled on the ground where the atmospheric pressure is 768 torr. The volume of the balloon is 8.00 m3. When
Anvisha [2.4K]

Answer:

The correct option is: <u>B. 366 torr</u>

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Given: <u>On the ground</u>- Initial Volume: V₁ = 8.00 m³, Initial Atmospheric Pressure: P₁= 768 torr;

<u>At 4200 m height</u>- Final Volume: V₂ = 16.80 m³, Final Atmospheric Pressure: P₂ = ?

Amount of gas: n, and Temperature: T = constant

<u>According to the Boyle's Law</u>, for a given amount of gas at constant temperature:         P₁ V₁ = P₂ V₂

⇒  P₂ = P₁ V₁ ÷ V₂

⇒  P₂ = [(768 torr) × (8.00 m³)] ÷ (16.80 m³)

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