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Roman55 [17]
2 years ago
10

Some chemical reactions release energy. Others store energy. What important chemical reaction stores energy?​

Chemistry
1 answer:
AnnZ [28]2 years ago
3 0

Answer:

endothermic reactions

Explanation:

your welcome :)

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Given the equation representing a system at equilibrium:
polet [3.4K]
I think the one that cause the equilibrium to shift would be :
3. adding a noble gas
Adding the noble gas will add more concentration to the KNO3, which will create different amount of equilibrium

hope this helps
3 0
3 years ago
How are carbohydrates and lipids similar? how are they different?
Ludmilka [50]
"Lipids<span> are like </span>carbohydrates<span> in way that the true fats contain only carbon, hydrogen, and oxygen. Both </span>carbohydrates and lipids<span> act as the main fuels and energy storage compounds of the human body. They are also called SACCHARIDES and grouped as: Monosaccharides, Disaccharides, Trisaccharides, Polysaccharides."

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6 0
2 years ago
What is the number of moles of solute in a 0.3 molal solution containing 0.10 kg of solvent? Don't forget the unit.
timurjin [86]
Molality is one way of expressing concentration for solutions. It has units of moles of solute per kg of solvent. From the given values, we easily calculate for the moles of solute by multiplying the mass of solvent to the molality. We do as follows:

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5 0
2 years ago
Read 2 more answers
Between what two elements does hydrogen bonding occur?
Snowcat [4.5K]

Answer:

it can occur between hydrogen and 3 other elements

Explanation:

These elements are:

Nitrogen

Oxygen

Flourine

5 0
2 years ago
Ethanedioic acid, a compound that is present in many vegetables, has a molar mass of 90.04 g/mol and a composition of 26.7% Carb
aleksandrvk [35]

Answer:

Empirical CHO2

Molecular C2H2O4

Explanation:

To determine the formulas, firstly, we need to divide the percentage compositions by the atomic masses.

Kindly note that the atomic mass of carbon, oxygen and hydrogen are 12, 16 and 1 respectively. We proceed with the division as follows:

C = 26.7/12 = 2.225

H = 2.2/1 = 2.2

O = 71.1/16 = 4.44375

We then proceed to divide by the smallest value which is 2.2 in this case

C = 2.25/2.2 = 1

H = 2.2/2.2 = 1

O = 4.44375/2.2 = 2

Thus, the empirical formula is CHO2

We now proceed to get the molecular formula as follows

[12+ 1 + 16(2) ]n = 90.04

45n = 90.04

n = 90.04/45 = 2

The molecular formula is :

C2H2O4

4 0
3 years ago
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