Chemistry

# What is the mass of 9.3 mole of SiH4?

Top Answer
###### Answered 2010-02-12 01:53:44

first you set up your ratio;

9.3moles

1mole = 32g

9.3 is the number of moles you're trying to find

32 comes from adding the mass numbers of both elements;

Si=28g

H=1g, but there's four, so you multiply it by 4, hence the 32

now you crossmultiply; so multiply 9.3 by 32

you get 297.6, then divide by 1 so 9.3 moles SiH4 is 297.6g. follow the same pattern every time and you'll be fine; hope this helps

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