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Arte-miy333 [17]
3 years ago
12

Have you figured out the answer yet ?

Chemistry
2 answers:
shtirl [24]3 years ago
4 0

Answer:

no

Explanation:

garik1379 [7]3 years ago
4 0

Answer:

Not yet!

Note:

Please mark as Brainliest! <3

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What is the correct name for the following compound: P2Br5
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Diphosphorus pentabromide is the official name.

Explanation:

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Which environmental conditions are MOST likely to increase the speed of chemical weathering? A) cold and wet B) warm and dry C)
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D) warm and wet.
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What does contact forces and non-contact forces mean?
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A contact force is a force in which and object comes in contact with a another object. A non-contact force, is a force is an object applied by another body. (A good example of a non-contact force is gravity)
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A first-order reaction (A → B) has a half-life of 25 minutes. If the initial concentration of A is 0.900 M, what is the concentr
Oksanka [162]

Answer:

0.6749 M is the concentration of B after 50 minutes.

Explanation:

A → B

Half life of the reaction = t_{1/2}=25 minutes

Rate constant of the reaction = k

For first order reaction, half life and half life are related by:

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{25 min}=0.02772 min^{-1}

Initial concentration of A = [A]_o=0.900 M

Final concentration of A after 50 minutes = [A]=?

t = 50 minute

[A]=[A]_o\times e^{-kt}

[A]=0.900 M\times e^{-0.02772 min^{-1}\times 50 minutes}

[A] = 0.2251 M

The concentration of A after 50 minutes = 0.2251 M

The concentration of B after 50 minutes = 0.900 M - 0.2251 M = 0.6749 M

0.6749 M is the concentration of B after 50 minutes.

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What happens to the solar energy absorbed by plants during photosynthesis ?
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