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xz_007 [3.2K]
3 years ago
5

Which explains how plants can chemically weather a rock? A. Plant roots get into cracks and secrete acids, which freeze and brea

k apart the rocks. B. Plant roots get into cracks, grow, and break apart the rocks. C. Plant roots get into cracks and secrete water, which freezes and breaks apart the rocks. D. Plant roots secrete acids that get into cracks and dissolve the rocks.
Chemistry
2 answers:
Sergeeva-Olga [200]3 years ago
7 0
I beleive the answer is : D ) <span> Plant roots secrete acids that get into cracks and dissolve the rocks.

-Hope this helps.</span>
Nimfa-mama [501]3 years ago
5 0
The answer is letter c
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prohojiy [21]

To make 1 Molar solution of hemoglobin ; 1600 grams of hemoglobin will be dissolved in 1 liter of water

The molecular weight of Hemoglobin is approximately  16,000 Daltons, when hemoglobin is converted to mM

16000 Dalton = 16000 ( g/mol )

given that 1 Dalton = 1 g/mol

To make 1 molar solution of hemoglobin using 1 liter of water

1 liter = 1000 grams

16000 Dalton = 16000 g/mol

Hence 16,000 grams of Hemoglobin is required to make 1 Molar solution of hemoglobin using 1 liter of water.

learn more : brainly.com/question/23517096

8 0
3 years ago
The enthalpy of fusion of solid n-butane is 4.66 kJ/mol. Calculate the energy required to melt 58.3 g of solid n-butane.
adelina 88 [10]

Answer : The energy required to melt 58.3 g of solid n-butane is, 4.66 kJ

Explanation :

First we have to calculate the moles of n-butane.

\text{Moles of n-butane}=\frac{\text{Mass of n-butane}}{\text{Molar mass of n-butane}}

Given:

Molar mass of n-butane = 58.12 g/mole

Mass of n-butane = 58.3 g

Now put all the given values in the above expression, we get:

\text{Moles of n-butane}=\frac{58.3g}{58.12g/mol}=1.00mol

Now we have to calculate the energy required.

Q=\frac{\Delta H}{n}

where,

Q = energy required

\Delta H = enthalpy of fusion of solid n-butane = 4.66 kJ/mol

n = moles = 1.00 mol

Now put all the given values in the above expression, we get:

Q=\frac{4.66kJ/mol}{1.00mol}=4.66kJ

Thus, the energy required to melt 58.3 g of solid n-butane is, 4.66 kJ

7 0
3 years ago
The electrons in the outermost energy level of an atom that influence how an element will react with other substances
Darya [45]
<span>valence electrons is our answer cuz i am good at chemstry</span>
6 0
3 years ago
If 20 atoms of aluminum react with 45 molecules of chlorine gas, which reactant is limiting and how many more atoms/molecules wo
saul85 [17]
Al:ch2 an molar ratio.

2:3 and an x. X is 30.  20/2 = 10 so an answer is 

45/3 = 15. Both ratios are used 

45 - 30 = 15 CL2 left.

Your Welcome :)

4 0
3 years ago
Read 2 more answers
I need help with my math but you can only choose one correct answer​
Anika [276]

Answer:

Explanation:

Decomposition is the answer.

If a compound breaks into two or more parts then it is called decomposition.

7 0
3 years ago
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