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DIA [1.3K]
3 years ago
12

What is the main chemical compound cells use for energy?

Chemistry
1 answer:
Ksenya-84 [330]3 years ago
7 0
The main chemical compound cells use for energy is Adenosine Triphosphate (ATP)
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Find the pH of 8.4x10^-8 M HCl. Report the answer to the hundredths place.
Hunter-Best [27]

Answer:

pH = 7.08

Explanation:

HCl ---------> H^+ + Cl^-

It's an acid, we are using this formula

pH = -log [H]^+

H^+ = 8.4 * 10^-8

pH = - log [8.4 * 10^-8]

It can also be solved as

-log 8.4-(-8log 10)

-0.924-(-8×1)

-0.924+8

7.076

To the nearest hundredth

pH = 7.08

8 0
3 years ago
A 3.4 g sample of sodium hydrogen carbonate is added to a solution of acetic acid weighing 10.9 g. The two substances react, rel
natima [27]

Answer: 2.7 grams

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

NaHCO_3(aq)+CH_3COOH(aq)\rightarrow CH_3COONa(aq)+H_2O(l)+CO_2(g)

Given: mass of sodium hydrogen carbonate = 3.4 g

mass of acetic acid = 10.9 g

Mass of reactants = mass  of sodium hydrogen carbonate+ mass of acetic acid = 3.4 + 10.9= 14.3 g

Mass of reactants = Mass of products in reaction vessel + mass of carbon dioxide (as it escapes)

Mass of  carbon dioxide = 14.3 - 11.6 =2.7 g

Thus the mass of carbon dioxide released during the reaction is 2.7 grams.

7 0
3 years ago
A description of a material that scatters light that passes through it
Nookie1986 [14]

Answer:

triangular prism

Explanation:

triangular prism scatters light through it into 7 spectrum colours , I'm not sure it's the right answer please make sure of it from someone else

4 0
2 years ago
A scientific model is easier to interpret and understand when it includes the main parts or processes, rather than every detail
gayaneshka [121]

Answer:

ot

Explanation:

5 0
3 years ago
Pleas answer this, it’s due tomorrow. I will give brainliest.
Vilka [71]

Answer:

just the second

Explanation:

8 0
3 years ago
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