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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Jess8219 Jess8219
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4 years ago
topic: quantities of chemical reactions
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4 years ago
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Determine the number of molecules of disulfur dichloride, S2CL2, in a 23.5g sample of S2CL2.

The molar mass of one molecule is 135.04 g/mol.

Using this quantity, multiply:

1 mol / 135.04 g by 23.5 g (given in question) to get the number of moles: 0.1740 moles of S2CL2

Remember avogadro's number, 6.02214076×10²³ ?

Multiply 0.1740 moles of disulfur dichloride with 6.02214076×10²³ molecules of disulfur dichloride / 1 mole of disulfur dichloride:

1.04785 ×10²³ molecules of disulfur dichloride

This should help further:
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