jasminealexandr
Answered

A sample of sodium hydroxide (NaOH) has a mass of 160.0 g. The molar mass of NaOH is 40.00 g/mol. How many moles of NaOH does this sample contain?

A4.000
B40.00
C160.0
D6,400

Verified Answer :

taskmasters

The correct answer is A. A  sample of sodium hydroxide (NaOH) has a mass of 160.0 g which is equal to 4 moles of NaOH. TO calculate this, we use the relation of the molar mass given. 

160.0 g NaOh ( 1 mol NaOH / 40.0 g NaOH ) = 4.000 mol NaOH

chrissiloves33

The answer is a because all you have to is 160*1/40=4.000

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