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MArishka [77]
3 years ago
5

Why is water essential to living things? (1 pc

Chemistry
1 answer:
DIA [1.3K]3 years ago
6 0

Answer:

Living organisms need water to survive. Many scientists even believe that if any extra-terrestrial exists, water must be present in their environments. All oxygen-dependent organisms need water to aid in the respiration process. Some organisms, such as fish, can only breathe in water. Other organisms require water to break down food molecules or generate energy during the respiration process. Water also helps many organisms regulate metabolism and dissolves compounds going into or out of the body.

Explanation:

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The concept of energy can be calculated in multiple ways. Which units are used for energy? Check all that apply.
laila [671]

Answer:

NEWTONS,  

Explanation:

3 0
3 years ago
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Which is a binary ionic compound? A. MgCl2 B. C6H12O6 C. CO2 D. PO43- E. CH4
miv72 [106K]
<h3 /><h3>Answer:</h3>

Option A)

Magnesium chloride, MgCl2, is a binary compound with bonds with relatively high ionic character.

7 0
3 years ago
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Calculate the pH at the equivalence point for the titration of 0.110 M methylamine (CH3NH2) with 0.110 M HCl. The Kb of methylam
nikklg [1K]
The reaction between the reactants would be:

CH₃NH₂ + HCl ↔ CH₃NH₃⁺ + Cl⁻

Let the conjugate acid undergo hydrolysis. Then, apply the ICE approach.

             CH₃NH₃⁺ + H₂O → H₃O⁺ + CH₃NH₂
I                0.11                       0             0
C               -x                          +x           +x
E            0.11 - x                     x             x

Ka = [H₃O⁺][CH₃NH₂]/[CH₃NH₃⁺]

Since the given information is Kb, let's find Ka in terms of Kb.

Ka = Kw/Kb, where Kw = 10⁻¹⁴

So,
Ka = 10⁻¹⁴/5×10⁻⁴ = 2×10⁻¹¹ = [H₃O⁺][CH₃NH₂]/[CH₃NH₃⁺]
2×10⁻¹¹ = [x][x]/[0.11-x]
Solving for x,
x = 1.483×10⁻⁶ = [H₃O⁺]

Since pH = -log[H₃O⁺],
pH = -log(1.483×10⁻⁶)
<em>pH = 5.83</em>


4 0
4 years ago
Which of the following methods can be used to completely separate a solution containing alcohol and water?
liq [111]
A) i think is the answerrrrr
8 0
3 years ago
I dont get it, what am i supposed to do?​
anygoal [31]

Answer:

It appears to be

<h2><u>replacement</u></h2>

Explanation:

I did that question.

4 0
3 years ago
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