Select the correct mass for each of the samples described below.

3.01 * 1023 molecules H2O

8.32 * 1020 formula units CaBr2

1.93 * 1026 molecules XeF6

Question

Chemistry

Phoenix Bradshaw

11 December, 12:22

Select the correct mass for each of the samples described below.

3.01 * 1023 molecules H2O

8.32 * 1020 formula units CaBr2

1.93 * 1026 molecules XeF6

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Answers (1)

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Mya · Answer 1

To determine the mass of each compound, we need to convert them into units of moles first. We use avogadros number to do this and use the molar mass of the compounds to convert to mass.

3.01 * 1023 molecules H2O (1 mole / 6.022x10^23 kg) (18.02 g / 1 mole) = 9.01 g

8.32 * 1020 formula units CaBr2 (1 mole / 6.022x10^23 kg) (199.89 g / 1 mole) = 0.28 g

1.93 * 1026 molecules XeF6 (1 mole / 6.022x10^23 kg) (245.28 g / 1 mole) = 78610.16 g

Select the correct mass for each of the samples described below.3.01 * 1023 molecules H2O8.32 * 1020 formula units CaBr21.93 * 1026 molecules XeF6

Select the correct mass for each of the samples described below.

3.01 * 1023 molecules H2O

8.32 * 1020 formula units CaBr2

1.93 * 1026 molecules XeF6