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pentagon [3]
3 years ago
13

Explain how chemicals and chemical reactions are an important part of our lives.

Chemistry
1 answer:
Zielflug [23.3K]3 years ago
8 0
Chemical reaction is the basis of life for living organisms; no organism can remain alive without the occurrence of chemical reactions.
Chemical reactions that occur in the living organisms are called biochemical reactions, these reactions are needed for the organism to grow, develop, survive and remain alive; when the chemical reactions stop the organism die.
For instance, to remain alive one has to eat. The food eaten can not be useful to the body if the digestive enzymes do not carry out chemical reactions on it and convert it to a form that can easily enter the blood where it is needed.
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Which has more particles, a mole of copper (Cu) atoms or a mole of neon
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Answer:

D

Explanation:

it is neon because neon has a higher atomic number so it would have more protons and neutrons and electrons in one atom thus having more particles in one mole

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How does energy change when it moves?? PLEASE ANSWER ASAP
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What is the pH of 0.001 M HNO,?
Vsevolod [243]

Answer:

The pH of 0.001 M HNO3 is pH 2.0

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3 years ago
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A compound with a total of four carbons. A straight chain across the bottom of three carbons with all single bonds. There is a m
AleksandrR [38]
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6 0
4 years ago
32P has a half life of 14.0 days. If you order 60.0 grams of 32P and it took 46.7hrs from the time it was made to the time it wa
8090 [49]

Answer:

[A_t]=54.5\ g

Explanation:

Given that:

Half life = 14.0 days

t_{1/2}=\frac{\ln2}{k}

Where, k is rate constant

So,  

k=\frac{\ln2}{t_{1/2}}

k=\frac{\ln2}{14.0}\ days^{-1}

The rate constant, k = 0.04951 days⁻¹

Initial concentration [A₀] = 60.0 g

Time = 46.7 hrs

Considering, 1 hr = 0.041667 days

So, time = 1.9458 days

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

So,  

[A_t]=60.0\times e^{-0.04951\times 1.9458}\ g

[A_t]=54.5\ g

7 0
3 years ago
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