2 years ago

Which statement correctly expresses a relation between solubility and temperature?

1 answer:

6 0

Answer: I Think It's D) The change of solubility with temperature is the same for all substances.

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serious [3.7K]

The fourth one is correct yw

5 0

3 years ago

andrew-mc [135]

Because the sulfur ion has a negative two charge, the formula would be Fe2S3

8 0

3 years ago

azamat

Answer: The molecular formula will be $C_9H_{18}N_6$

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

To calculate the molecular formula, we need to find the valency which is multiplied by each element to get the molecular formula.

The equation used to calculate the valency is:

$n=\frac{\text{molecular mass}}{\text{empirical mass}}$

empirical mass of $C_3H_6N_2=3\times 12+6\times 1+2\times 14=70g$

Molecular mass= 214 g/mol

$n=\frac{214}{70}=3$

Thus molecular formula will be $3\times C_3H_6N_2=C_9H_{18}N_6$

8 0

3 years ago

Rasek [7]

I think answer should be a. Please give me brainlest let me know if it’s correct have a great night

6 0

3 years ago

myrzilka [38]

The answer is 77kg I hope this helped good luck!

3 0

3 years ago