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anzhelika [568]
3 years ago
14

What causes water to increase in density?

Chemistry
2 answers:
Digiron [165]3 years ago
8 0

Answer:

Give the guy brainlest

Explanation:

Hello

murzikaleks [220]3 years ago
3 0

Explanation:

temperature changes affect seawater density as water cools its density increases. As water cools H2O molecules pack more closely together because the molecules are vibrating less at low temperatures and take up less volume. The same number of water molecules in smaller volume results higher density

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The following equation represents the type of reaction called
Mazyrski [523]

Answer:

Reduction

Explanation:

Reduction:

Reduction involve the gain of electron and oxidation number is decreased.

Mn⁺⁷ +3e⁻    →    Mn⁴⁺

Mn gets three electrons , its oxidation state reduced from +7 to +4 so Mn gets reduced.

Examples:

Consider the following reactions.

4KI + 2CuCl₂  →   2CuI  + I₂  + 4KCl

the oxidation state of copper is changed from +2 to +1 so copper get reduced.

CO + H₂O   →  CO₂ + H₂

the oxidation state of carbon is +2 on reactant  side and on product side it becomes  +4 so carbon get oxidized.

H₂S + 2NaOH → Na₂S + 2H₂O

The oxidation sate of sulfur is -2 on reactant side and in product side it is also -2 so it neither oxidized nor reduced.

6 0
2 years ago
Which statements describe situations where organisms interact and depend on each other for survival?
iragen [17]

Answer:

Mutualisms/Symbiotic relationships

Explanation:
It’s a mutual beneficial relationship that helps both sides… for example… clownfish and sea anemones. The sea anemones provide the clownfish protection and shelter, and the clownfish provides nutrients from waste for the anemones.

Hope that helped!

6 0
2 years ago
Based on the collision theory, which factors are likely to increase the rate of reaction? Select all that apply.
Alexus [3.1K]

Answer:

Option a

Explanation:

can u mark brainliest?

7 0
1 year ago
How many grams are there in 2.75E23 molecules of C2H6 (MM = 30 grams)?
skelet666 [1.2K]

Answer:13.70 i think

Explanation:

3 0
2 years ago
5. In which group of elements do most atoms have completely filled s and p velence sublevels? A) halogens B) noble gases C) alka
ivanzaharov [21]
Noble Gases is the answer (please give me brainliest
4 0
2 years ago
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