Question #2b990

1 Answer
Apr 26, 2017

Answer:

#4.07xx10^2" mol of S"#

Explanation:

The factor label method of converting units begins with writing the given quantity as the numerator of a fraction whose denominator is 1.

Given:

#(2.45 xx 10^26" atoms of S")/1#

Multiply by the reciprocal of the Avogadro Constant so that units of atoms of Sulfur are cancelled:

#(2.45 xx 10^26" atoms of S")/1(1" mol of S")/(6.02xx10^23" atoms of S")#

Please observe the cancellation:

#(2.45 xx 10^26cancel" atoms of S")/1(1" mol of S")/(6.02xx10^23cancel" atoms of S")#

This leave us with only the units of moles of Sulfur:

#(2.45xx10^26)/(6.02xx10^23)" mol of S"#

#4.07xx10^2" mol of S"#