Question:

Determine the molecular formulas to which the following empirical formulas and molar masses pertain.

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a)SNH (188.35g/mol)

b)NPCl2 (347.64g/mol)

c)CoC4O4 (341.94g/mol)

d)SN (184.32g/mol)

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  1. a) 188.35 / (32.1+14.0+1.0) = 4

    ans: S4N4H4

    b) 347.64 / (14.0+31.0+35.5x2) = 3

    ans: N3P3Cl6

    c) 341.94 / (58.9+12.0x4+16.0x4) = 2

    ans: Co2C8O8

    d) 184.32 / (32.1+14.0) = 4

    ans: S4N4

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