Question
Silane $\left(\mathrm{SiH}_{4}\right)$ is used in the electronics industry to manufacture thin films of silicon. What is the percent Si by mass in $\mathrm{SiH}_{4} ?$ Does silane have the same percent Si by mass as disilane, $\mathrm{Si}_{2} \mathrm{H}_{6} ?$
Step 1
The molar mass of silicon (Si) is 28.85 g/mol and the molar mass of hydrogen (H) is 1.01 g/mol. Since there are four hydrogen atoms in silane, the total molar mass of hydrogen is $4 \times 1.01 = 4.04$ g/mol. Therefore, the molar mass of silane is $28.85 + 4.04 = Show more…
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