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KiRa [710]
3 years ago
8

What do the presence of fish and a wide diversity of invertebrates in a river indicate?

Chemistry
1 answer:
Yakvenalex [24]3 years ago
6 0
High biodiversity in the environment. 
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The mole ratio of two reactants in a chemical equation is determined by
Ipatiy [6.2K]

Answer:

A mole ratio is the ratio between the amounts in moles of any two compounds involved in a chemical reaction. ... The mole ratio may be determined by examining the coefficients in front of formulas in a balanced chemical equation. Also known as: The mole ratio is also called the mole-to-mole ratio.

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2020-21 CCS 8SCI SMA 10 P.1.1, 1.22 of 18
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3 years ago
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As the volume of a gas increases, what happens to the pressure of the gas?
Elena L [17]
Boyle found that when the pressure of gas at a constant temperature is increased, the volume of the gas decreases. when the pressure of gas is decreased, the volume increases. this relationship between pressure and volume is called Boyle's law.
4 0
2 years ago
According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go
alexira [117]

<u>Answer: </u>The correct answer is Silver.

<u>Explanation:</u>

Specific heat of fusion is defined as the amount of heat which is required to raise the temperature of 1 gram of a substance to 1°C. It is generally expressed in kJ/mol

We are required to find the substance which require more heat. For that we need to know the specific heat of all the substances.

The substance which have the highest specific heat, will require more heat.

The specific heat of the given substances are:

Silver = 11.3 kJ/mol

Sulfur = 1.7175 kJ/mol

Water = 5.98 kJ/mol

Lead = 4.799 kJ/mol

The specific heat of silver is the highest and hence, will require more heat.

Hence, the correct answer is silver.

7 0
2 years ago
Heat left over from when the earth was formed about 4.6 billion years ago is one source of INTERNAL energy. What is the other so
siniylev [52]

Answer:

the gravity

Explanation:

i hope you help this answer

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2 years ago
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