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netineya [11]
3 years ago
5

Explain why organisms need enzymes to survive?

Chemistry
1 answer:
erica [24]3 years ago
7 0
Enzymes are required to carry out Catabolic and Anabolic processes in Organisms which normally require high temperatures or high amount of energy. Enzymes act as catalysts and reduce the Energy required to carry out the process allowing the reactions to be carried out relatively fast at low temperatures.
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An ion from a given element has 38 protons and 36 electrons what is the charge
den301095 [7]
For a neutral atom, the number of positive protons is equal to the number of negative electrons and the charge is zero.

For this question, we see that the number of protons exceeds the number of electrons by 2, which means that this ion in a positively charged charged ion with charge of +2.
3 0
4 years ago
Can someone please help me with my homework ASAP? It's due tonight.
sladkih [1.3K]

Answer:

27.7 grams of Li

0.140 moles of Co

0.158 moles of K

59.9 grams of As

8.00x10⁻⁹ moles of U

142.8 moles of H

0.0199 moles of O

0.666 moles of Pb

Explanation:

Mass / Molar mass = Mol

Mol . Molar mass = Mass

3.99 m . 6.94 g/m = 27.7 grams of Li

8.28 g / 58.93 g/m = 0.140 moles of Co

6.17 g / 39.1 g/m = 0.158 moles of K

0.8 mol . 74.92 g/m = 59.9 grams of As

6.02x10²³ (NA) particles are contained in 1 mol

6.02x10²³ are contained in 1 mol U____ 1 mol  H ____ 1 mol O ___ 1 mol Pb

4.82x10¹⁵ atoms U  ____ 4.82x10¹⁵/ 6.02x10²³ = 8.00x10⁻⁹ moles of U

8.60x10²⁵atoms H  ____ 8.60x10²⁵ / 6.02x10²³  = 142.8 moles of H

1.20x10²² atoms O  ____ 1.20x10²² / 6.02x10²³ = 0.0199 moles of O

4.01x10²³ atoms Pb ____ 4.01x10²³ / 6.02x10²³ = 0.666 moles of Pb

3 0
3 years ago
Read 2 more answers
10 points
kaheart [24]

Answer:

False.

Explanation:

I am not completely sure, but I don't believe the earth is getting larger.

8 0
3 years ago
1. A sample of gold (Au) has a mass of 35.12 g.
galina1969 [7]
 a. Moles of gold = 35.12/197 = 0.18 moles. b. number of gold molecules = moles x 6.02 x 10^23 = 0.18 x 6.02 x 10^23= 1.08 x 10^23
8 0
4 years ago
I don’t know how to solve this
stepladder [879]
Hi,

Answer is 191.2.

800J = 191.2 cal

Hope this helps.
7 0
3 years ago
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