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calculate the mass of chloroform that contains 1000000000000 molecules of CHCL3

calculate the mass of chloroform that contains 1000000000000 molecules of CHCL3

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Answer #1

1000000000000 molecules = 10^12 molecules

1 mol ---------------------> 6.023 x 10^23 molecules

x mol -------------------------> 10^12 molecules

moles of CCl4 = x = 1 x 10^12 / 6.023 x 10^23

                             = 1.66 x 10^-12

molar mass of CHCl3 = 119 g / mol

mass of CHCl3 = moles x molar mass

                       = 1.66 x 10^-12 x 119

                        = 1.98 x 10^-10 g

mass of chloroform = 1.98 x 10^-10 g

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