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Convert 125g of Ba(OH)2 to moles.

User Marin
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1 Answer

20 votes
20 votes

Answer:

0.73

Step-by-step explanation:

the formula to work out moles:

moles = mass/relative formula mass

mass = 125g

the relative atomic mass for Ba is 137

the relative atomic mass for O is 16

the relative atomic mass for H is 1

oxygen and hydrogen have two atoms each : Ba(OH)2

the relative formula mass is the sum of the atomic masses in the compound:

137 + (16 × 2) + (1 × 2) = 171

moles = 125g/171 = 0.73 to two decimal places

User Yves Reynhout
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