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Mice21 [21]
3 years ago
5

QUESTION 2

Chemistry
1 answer:
alina1380 [7]3 years ago
8 0

Answer:

A

Explanation:

Mutualism is A symbiotic relationship between two species in which both partners benefit

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If you trace back the history of a carbon atom in your little finger through all of cosmic history, where did this atom most lik
Kamila [148]

Answer:

It was fused from 3 helium nuclei in the core of a red giant star long before the Sun existed

Explanation:

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2 years ago
A gas at STP has a volume of 1.00 L. If the pressure is doubled and the temperature remains constant, what is the news of the ga
4vir4ik [10]

Answer: PV = nRT

A gas at STP... This means that the temperature is 0°C and pressure is 1 atm.

R is the gas constant which is 0.08206 L*atm/(K*mol)

Rearranging for volume

V = nRT/P

The temperature and number of moles are held constant. This means that this uses Boyle's Law. (The ideal gas law could be manipulated to give us this result when T and n are held constant.)

PV = k

where k is a constant.

This means that

P₁V₁ = k = P₂V₂

P₁V₁ = P₂V₂

(1 atm) * (1 L) = (2 atm) * V₂

V₂ = 0.5 L

The new volume of the gas is 0.5 L.

Explanation:

3 0
2 years ago
Which force prevents protons from repelling each other inside a nucleus?
telo118 [61]

Which force prevents protons from repelling each other inside a nucleus?

the gravitational force

the weak nuclear force

the electromagnetic force

<u>the strong nuclear force</u>

5 0
3 years ago
What is the pH of a solution prepared by dissolving<br>0.8 g NaOH in water to make 200 mL solution?​
Ad libitum [116K]

Answer:

pH>7

Explanation:

bases tend to increase the pH of a solution. since water has the pH of 7 and NaOH has pHof 14, the overall pH of solution will increase.

hope it's helpful.

3 0
3 years ago
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The limestone used in building the Egyptian pyramids was used because it is _____________
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Answer:

hard and brittle

hope this helps you ☺️☺️

good night take care sweet dream

3 0
3 years ago
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