Question

multiply or divide the following measurements. be sure each answer you enter contains the correct number of significant digits.
0.934 $\frac{mol}{l}$ × 0.525 l = mol
385.37 mol ÷ 0.36 l = $\frac{mol}{l}$
2.0947 $\frac{mol}{l}$ × 2.95 l = mol

Explanation:

Step1: Multiply the first set

Multiply molarity and volume.
$0.934\times0.525 = 0.49035$. The least number of significant - digits in the factors is 3, so the answer is $0.490$ mol.

Step2: Divide the second set

Divide amount of substance by volume.
$385.37\div0.36=\frac{385.37}{0.36}\approx1070.4722$. The least number of significant - digits in the factors is 2, so the answer is $1.1\times10^{3}$ mol/L.

Step3: Multiply the third set

Multiply molarity and volume.
$2.0947\times2.95 = 6.179365$. The least number of significant - digits in the factors is 3, so the answer is $6.18$ mol.

Answer:

$0.490$ mol
$1.1\times10^{3}$ mol/L
$6.18$ mol