Question

1) are present in 3.12 moles of carbon monoxide ?   atoms of carbon. 2. How many...

1) are present in 3.12 moles of carbon monoxide ?  
atoms of carbon.


2. How many MOLES of oxygen are present in 8.18×1021molecules of carbon monoxide ?  
moles of oxygen.


1. How many MOLECULES of phosphorus trichloride are present in 4.17 moles of this compound ?  
molecules.


2. How many MOLES of phosphorus trichloride are present in 9.62×1022 molecules of this compound ?  
moles.

2)

1. How many ATOMS of carbon are present in 5.72 grams ofcarbon monoxide ? atoms of carbon .


2. How many GRAMS of oxygen are present in 8.18×1021molecules of carbon monoxide ? grams of oxygen .



1. How many MOLECULES of phosphorus trichloride are present in 8.11 grams of this compound ?   molecules.


2. How many GRAMS of phosphorus trichloride are present in 9.62×1022 molecules of this compound ?   grams.

3)

The percent by mass of iron(II) in FeSO4
is %.


The percent by mass of chlorine in C2H5Cl
is %.


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