Question

question 14 cobalt has a density of 12.5 g/ml. 675ml of cobalt weighs blank 1 grams. (give answer rounded to the nearest whole number) add your answer 3 points

Explanation:

Step1: Recall density formula

The density formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume. We need to find $m$, and we know $
ho = 12.5\ g/ml$ and $V=675\ ml$.

Step2: Rearrange formula for mass

Rearranging the formula for $m$ gives $m=
ho\times V$.

Step3: Calculate mass

Substitute $
ho = 12.5\ g/ml$ and $V = 675\ ml$ into the formula: $m=12.5\times675 = 8437.5\ g$.

Step4: Round to nearest whole number

Rounding $8437.5$ to the nearest whole number gives $8438\ g$.

Answer:

8438