Group a used 5.00 moles of styrene and 0.0010 moles of benzoyl peroxide while group b used the same amount of benzoyl peroxide as group a but used only 1.50 moles styrene. what would the average molecular weight of each group's polymer sample be
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Ответ:
Answer : Average molecular weight of group A = 104.0276 g
Average molecular weight of group B = 104.0920 g
Solution : Given, Moles of group A styrene = 5 moles
Moles of group A benzoyl peroxide = 0.0010 moles
Moles of group B styrene = 1.5 moles
Moles of group B benzoyl peroxide = 0.0010 moles
Molecular mass of styrene = 104 g/mole
Molecular mass of benzoyl peroxide = 242.23 g/mol
Formula used : Average molar mass = Total mass / Total moles
For group A,
Average molar mass of group A =
=
=
=
= 104.0276 g
Average molar mass of group A = 104.0276 g
For group B,
Average molar mass of group B =
=
=
=
= 104.0920 g
Average molar mass of group B = 104.0920 g
Ответ:
10 moles
Explanation:
set it up as a proportion
450 kL/20 moles = 225 kL/ x moles
Cross multiply to solve for x.