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almond37 [142]
3 years ago
12

5.) What is the missing element? * a. Hydrogen b. Helium c. Boron d. Oxygen

Physics
2 answers:
KiRa [710]3 years ago
7 0

Answer:

Explanation:

This question is showing a stoichiometric reaction.  But the out put is Helium and nitrogen.     while the input has Hydrogen and something else.  Hydrogen doesn't turn into different elements.  So I think the question is wrong.   But, He is missing , and so is the nitrogen, but since that's not a choice, maybe they hope you'll put  He   ??   :/  But like I said , the question is just wrong.

stiv31 [10]3 years ago
3 0

Answer:

i want to say it is C

Explanation:

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An airplane has a momentum of 8.55 x 107 kg.m/s[S] and a velocity of 900 km/h[S]. Determine the mass of the airplane.
kow [346]

Answer:

342,000kg

Explanation:

p=mv

8.55*10^7 kg*m/s=m(900 km/h)

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Explanation:

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