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Rudiy27
3 years ago
15

40 Points!!! Match the correct definition with the correct keyword.

Chemistry
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:

Okay the Answers are top to bottom.

5, 4, 1, 3, 2

Explanation:

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Frank has a sample of steel that weighs 80 grams. If the density of his sample of steel is 8 g/cm3 ,what is the samples volume?
kirill115 [55]

Answer: 10 cm3

Explanation:

Mass of sample of steel (m) = 80 grams

density of sample of steel (p) = 8 g/cm3 samples volume (v) = ?

Since density is obtained by dividing mass by volume, the density of the steel sample is expressed as:

density = mass / volume

p = m / v

make v the subject formula

v = m / p

v = 80 grams / 8 g/cm3

v = 10 cm3

Thus, the samples volume is 10 cm3

4 0
3 years ago
A number should be rounded up if________? it is the first digit, the number after it is between 0 and 4, the number after is bet
Mice21 [21]

Answer:

a number should be rounded up it is 5 or higher

8 0
3 years ago
What happen when a piece of silver metal is added to the copper sulphate solution​
natta225 [31]

Answer:

Explanation:When silver Ag metal is added to copper sulphate CuSO4 solution, no reaction takes place as silver is less reactive than that of copper and cannot displace copper from its solution. Hence, when a piece of silver metal is added to copper sulphate solution there will be no reaction.

7 0
3 years ago
Read 2 more answers
The molal boiling-point and freezing-point constants are different for different solvents.
RoseWind [281]

Answer:

I think the answer is true, sorry if I am wrong

Explanation:

8 0
3 years ago
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Which of the following statements best compares the pH value of H3PO4 and HCl?
wel

Answer:

Option B. Both have a pH less than 7, but H3PO4 has a lower pH than HCl

Explanation:

Those are acid, so the pH would be < 7.

H₃PO₄ is a weak acid with 3 dissociations

HCl is a strong acid.

pH depends on [H]⁺

H₃PO₄  →  3H⁺  +  PO₄⁻³

HCl →  H⁺  +  Cl⁻

If both acid, have the same concentration, [H⁺]H₃PO₄ > [H⁺]HCl, that's why the pH from the phosphoric will be lower.

5 0
3 years ago
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