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assessment-id. 1 3253 1-1 &course;_d=-1 1449-1 5content, da,B86 B https/cowley Q

ID: 1029520 • Letter: A

Question

assessment-id. 1 3253 1-1 &course;_d=-1 1449-1 5content, da,B86 B https/cowley QUESTION 3 The formula for mustard gas used in chemical warfare is CaHeSCh (159 09 g/mol) What is the percentage of hydrogen in the compound? 0 0 635% 5.08% 0 20 16% o 3020% 44 57% QUESTION 4 Given a mole of softballs, which of the following is the best estimate of their total volume? O Earth O Moon O Sun O solar systerm O umverse Click Save and Submit to save and submit. Chiek Save All Ansteers to save all answers Save All P rch

Explanation / Answer

3)

Molar mass of C4H8SCl2,
MM = 4*MM(C) + 8*MM(H) + 1*MM(S) + 2*MM(Cl)
= 4*12.01 + 8*1.008 + 1*32.07 + 2*35.45
= 159.074 g/mol


MM of C4H8SCl2 = 159.074
Lets calculate the mass of element

mass of H = 8*MM(H)
= 8.064 g

Mass % of H = (8.064*100)/159.074
= 5.08 %
Answer: 5.08 %

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