Again could someone help me on this?

1 answer:

3 0

Answer:

Celsius, Fahrenheit and Kelvin are the three common temperature scales.

Explanation:

Celsius, Fahrenheit and Kelvin are the three common temperature scales.

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Aleksandr-060686 [28]

<u>Answer:</u> The additional information that is helpful in calculating the mole percent of XCl(s) and ZCl(s) is the molar masses of Z and X

<u>Explanation:</u>

To calculate the mole percent of a substance, we use the equation:

$\text{Mole percent of a substance}=\frac{\text{Moles of a substance}}{\text{Total moles}}\times 100$

Mass percent means that the mass of a substance is present in 100 grams of mixture

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

We require the molar masses of Z and X to calculate the mole percent of Z and X respectively

Hence, the additional information that is helpful in calculating the mole percent of XCl(s) and ZCl(s) is the molar masses of Z and X

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valentina_108 [34]

ACID: A substance that accepts a lone pair of electrons

BASE: A substance that donates a lone pair of electrons

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Igoryamba

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il63 [147K]

$19~ \text{kcal} = 19 \times 1000 ~\text{cal } = 19000~ \text{cal} = 19000 \times 4.184~ \text{J} = 79496~ \text{J}$

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kap26 [50]

The charge of an ion of calcium that loses two electrons is D.) +2

hope this helps you

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