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The molar mass of an unknown material is 78.430 g/mol. What is the mass of half of a mole of the unknown material?
pls help me

Sagot :

Answer:

hoy

Explanation:

kathrynlizzy

Answer:

39.215g

Explanation:

Molae mass means mass in 1 mole.

If 78.430g is in 1 mole

Xg is in 0.5 mole

cross multiply

X x 1 = 78.430 x 0.5

X = 39.215 g

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