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Natasha_Volkova [10]
3 years ago
9

Please Help!!! 15 Points

Chemistry
1 answer:
Irina18 [472]3 years ago
3 0

Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?

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Hydrogen is a liquid below what temperature?
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<em>Answer:</em>

  • The hydrogen exist as a liquid at -253 degree C.

<em>Explanation:</em>

  • Hydrogen is found as a molecular form H2. In order to become liquid , it must be cooled below its critical temperature. It become liquid at -253 degree C or 423.17  degree F or 20.8 K.
  • So hydrogen become liquid at -253 degree Celsius.
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If you want to produce 11 moles of NH3, how much H2 do you need?
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33 g of H2

Explanation:

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3 mol H2 -> 2 mol NH3

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x= 16.5 mol H2

1 mol H2    -> 2 g

16.5 mol H2 ->x

x= (16.5 mol H2 * 2 g)/ 1 mol H2

x= 33 g

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Who discovered phosphate?
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