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kolezko [41]
3 years ago
8

Which is the name of the escape vehicle on the International Space Station?

Biology
1 answer:
Pie3 years ago
6 0

Answer: Crew Return Vehicle

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What role does cellular respiration play in the carbon cycle?
Liono4ka [1.6K]
During cellular respiration, carbon dioxide is released to the atmosphere during the formation of acetyl coenzyme A<span>. This step involves the oxidative decarboxylation of pyruvic acid, the result of which is carbon dioxide. This carbon dioxide is uptaken by plants and used in the process of photosynthesis to produce glucose.</span>
7 0
3 years ago
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Wood deposits recovered from an archaeological site contain 36% of the C-14 they originally contained. How long ago did the tree
Veseljchak [2.6K]

Answer: It was obtained 8515 years ago

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

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process  

a) to find the rate constant:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

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

k=\frac{0.693}{5760}=0.00012years^{-1}

b) for completion of 36% of reaction

t=\frac{2.303}{k}\log\frac{100}{36}

t=\frac{2.303}{0.00012}\log\frac{100}{36}

t = 8515 years

The time was 8515 years.

3 0
3 years ago
What are the atomic masses of<br> protons, neutrons, and electrons?
pshichka [43]

Answer:

Protons, neutrons, and electrons: Both protons and neutrons have a mass of 1 amu and are found in the nucleus. However, protons have a charge of +1, and neutrons are uncharged. Electrons have a mass of approximately 0 amu, orbit the nucleus, and have a charge of -1.

Explanation:

5 0
3 years ago
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What physical factors affect the action of enzymes?
sleet_krkn [62]
Teperature
Ph level
Substrate concentration
Not sure if these are physical but hope it helped.
5 0
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______ is the evaporation of water from plants, especially leaves. It is a type of translocation and part of the water cycle. Th
Sophie [7]

Answer:

transpiration

Explanation:

i am sorry if it is right

4 0
3 years ago
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