Using the models of the molecules (black = C, white = H, yellow = S, green = Cl)

ID: 503888 • Letter: U

Question

Using the models of the molecules (black = C, white = H, yellow = S, green = Cl), determine each of the following:

Part A

molecular formula for the compound 1 (Figure 1)

Express your answer as a chemical formula.

Part B

molar mass of the compound 1 (Figure 1)

Express your answer using two decimal places.

Part C

number of moles in 19.5 g of the compound 1 (Figure 1)

Express your answer using three significant figures.

Part D

molecular formula for the compound 2 (Figure 2)

Express your answer as a chemical formula.

Part E

molar mass of the compound 2 (Figure 2)

Express your answer using two decimal places.

Part F

number of moles in 19.5 g of the compound 2 (Figure 2)

Express your answer using three significant figures.

Part A

Molecular formula - S2Cl2

(Disulfur dichloride)

Part B

Molar mass - 135.04 gm/mol

Part C

molar mass of compound = 135.04 gm/mole then 19.5 gm of compound present = 19.5 / 135.04 = 0.1444 mole

Ans - 0.1444 mole

Part D

Molecular formula - C6H6

(Benzene)

Part E

Molar mass - 78.11 gm/mol

Part C

molar mass of compound = 78.11 gm/mole then 19.5 gm of compound present = 19.5 / 78.11 = 0.249648 mole

Ans - 0.249648 mole

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