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Ipatiy [6.2K]
3 years ago
15

Cells can regulate different processes in two ways. They can turn on and off the genes that make enzymes, or they can

Chemistry
1 answer:
scoundrel [369]3 years ago
3 0

Answer:

im pretty sure its d

Explanation:

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Using the element above answer the following question:
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20.180

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The rate constant for the decomposition reaction of H2O2 is 3.66 × 10−3 s−1 at a particular temperature. What is the concentrati
Pepsi [2]

Answer:  3.72 M

Explanation:

Expression for rate law for first order kinetics is given by:

t=\frac{2.303}{k}\log\frac{a}{a-x}

where,

k = rate constant = 3.66\times 10^{-3}s^{-1}

t = age of sample = 15.0 minutes

a = let initial amount of the reactant  = 10.0 M

a - x = amount left after decay process = ?

15.0\times 60s=\frac{2.303}{3.66\times 10^{-3}}\log\frac{10.0}{(a-x)}

\log\frac{100}{(a-x)}=1.43

\frac{100}{(a-x)}=26.9

(a-x)=3.72M

The concentration of H_2O_2 in a solution after 15.0 minutes have passed is 3.72 M

7 0
3 years ago
The map shows the average high temperatures in July for two cities in Texas.
alexira [117]

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Highest temperature which was recorded in Texas was 40 degrees.

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Texas has variating weather. In summer Texas city turns to be very hot and during winters the city of Texas experience fall in temperature. There is very few rainfall in Texas due the climatic conditions.

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What evidence did Mendeleev use to decide that the alkali metals should be in the same group?
Bezzdna [24]

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they all reacted the same

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4 0
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