What is the mass of 3.50 moles of Ba(NO2)2?
1 answer:
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Given :
Measurements .
To Find :
The multiplication using significant figures .
Solution :
We know , the least number of significant figures in any number of the problem determines the number of significant figures in the answer.
So , significant figure( S.F) in 4.5 cm is 2 .
S.F in 2000.0 cm is 5 .
S.F in 4 cm is 1 .
So , minimum S.F is 1 .
Therefore , S.F of their product is 1 .
Now , multiplying them we will get :
Now , converting 36000 in 1 significant digit .
First we will write it in exponential 2 S.F form.
Now , to convert 3.6 into 1 S.F we should round off this .
So , round off 3.6 we will get 4 .
Therefore , The multiplication using significant figures is .
Hence , this is the required solution .