Question

How many moles of hydrogen are there in 0.925g of Ca (OH)2? Ca = 40 a.m.u.​

Answer 1

Answer:

amu of Ca(0H)2 = 74

1 mole = 74 g

then 0.925g = 0.925/74 = 0.0125 moles.

then... in 1 mole there are 2 moles of H. then..

2/1 ×0.0125 = 0.025 moles of h

hope it help

Answer 2

Explanation:

1 mole of Ca(OH)2 = 40+(16+1)×2 grams

1 mole of Ca(OH)2= 74 grams

1 gram of Ca(OH)2=1/74 moles

0.925 grams of Ca(OH)2= (1/74)×0.925 moles

= 0.0125 moles