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Calculate the mass ( in grams ) of 1 2 . 0 moles of C 2 H 7 N ( molar mass = 4 5

Calculate the mass

(

in grams

)

12.0

moles of

C_{2} H_{7} N (

molar mass

= 45.0 \frac{g}{m} o l .

Give your answer to three significant figures.

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