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Irina18 [472]
3 years ago
10

A(n)

Chemistry
1 answer:
alex41 [277]3 years ago
8 0
It should be scientific law since a hypothesis is like a prediction and a theory could be used to explain something although it might not be true. There’s many theories just to explain one thing. So it should be scientific law
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Why do you think we use heat to dissolve sodium tetraborate?
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Answer:

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3 years ago
if you react 100g of ammonium chloride with excess calcium oxide, what Is the theoretical yeild (in grams) of ammonia? when you
Maurinko [17]

Answer:

31.78 grams

25.55%

Explanation:

The balanced reaction for ammonium chloride with calcium oxide will be:

2NH4Cl + Ca(OH)2 ---> CaCl2 + 2NH3 + 2H2O

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100g / (53.49g/mol) * 2/2  * 17g/mol= 31.78 grams

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3 years ago
How much time would it take for 5.2 x 10^5 atoms of fermium-253 (half-life 3 days) to decay to 6.5 x 104 atoms?
Jlenok [28]

Answer:

9 days, or 3 half-lives

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65000/520000=1/8, or 3 half-lives

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I'm not the greatest at Chem but this seems more like math than Chem :)

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Part B

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