A common mineral in Earth’s crust has the chemical composition 34.55% Mg, 19.96% Si, and 45.49%...
A common mineral in Earth’s crust has the chemical composition 34.55% Mg, 19.96% Si, and 45.49% O by mass. What is its empirical formula?
please show your steps
Homework Answers
step1:
no.of moles of Mg = 34.45/24.3 = 1.417
no.of moles of Si = 19.96/28 = 0.713
no.of moles of O = 45.49/16 = 2.843
step2
divide each no. of moles with lowest among these three
Mg = 1.417/0.713 = 1.98 = 2
Si = 0.713/0.713 = 1 =1
O =2.843/0.713 = 3.98 = 4
step3
To obtain emperical formul aassign these values at the suffix of of Mg , Si , O
so Mg2SiO4
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A common mineral in Earth’s crust has the chemical composition
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