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valina [46]
3 years ago
13

I'm a lunar eclipse,what seems to darken ?

Chemistry
2 answers:
quester [9]3 years ago
6 0
The face of the moon darkens
VikaD [51]3 years ago
3 0
The face of the moon darkens during a lunar eclipse.
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Yield for this reaction?<br> Reaction: N2(g) + 3 H2(g) → 2 NH3 (g)
andriy [413]

Answer:

Yes, yield.

Explanation:

N2(g) + 3 H2(g) → 2 NH3 (g) balanced equation

First, find limiting reactant:  

Moles H2 = 1.83 g x 1 mole/2 g = 0.915 moles H2

Moles N2 = 9.84 g N2 x 1 mole/28 g = 0.351 moles N2

The mole ratio of H2: N2 is 3:1, so H2 is limiting (0.915 is less than 3 x 0.351)

Theoretical yield of NH3 = 0.915 mol H2 x 2 mol NH3/3 mol H2 = 0.61 moles NH3

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3 years ago
Barium-131 is used in the detection of bone tumors. The half-life of barium-131 is approximately 12 days. How long will it take
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ln[A] t = -kt + ln[A] 0 is the integrated rate rule for the first-order reaction A's products.

A straight line is produced when the natural log of [A] is plotted as a function of time since this equation has the form y = mx + b.

How is the length of a half-life determined?

The amount of time needed for the reactant concentration to drop to half its initial value is known as the half-life of a reaction. A first-order reaction's half-life is a constant that is correlated with its rate constant:

t 1/2 = 0.693/k.

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You open the refrigerator and take out a slice of leftover pizza. You put it in the microwave oven, turn it on, and watch for th
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Explanation:

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