Question

D. Express the following sum to appropriate
number of significant figures :
a. 2.3 x 103 mL + 4.22 x 104 mL + 9.04 x
103 mL +8.71 105 mL;​

Answer 1

Answer:

1615

Explanation:

1615.6115

here significant figures is 4

because 4.22×104=236.9

it is least significant figures

Answer 2

Answer:

1616 mL

Explanation:

We are given that an expression

$2.3\times 103 mL+4.22\times 104 mL+9.04\times 103 mL+8.71105 mL$

We have to find the sum to appropriate number of significant figures

$2.3\times 103 mL+4.22\times 104 mL+9.04\times 103 mL+8.71105 mL$

=$236.9 mL+438.88 mL+931.12 mL+8.71105 mL$

=$1615.61105 mL$

But least significant figures are 4 therefore, final answer precise to least significant figures

Hence, the final answer=1616 mL