#### Answer

$15\text{ oz}\approx 425.24\text{ g}$

#### Work Step by Step

If want to convert from ounces to grams, we have to consider the following conversion rate:
$0.035274 \text{ oz}\approx 1 \text{ g}$
By dividing both sides by $0.035274$, we get:
$1\text{ oz}\approx \frac{1}{0.035274} \text{ g}$
We mulitply both sides by 15 in order to get the answer to the question:
$15\text{ oz}\approx \frac{15}{0.035274} \text{ g}\approx 425.242\text{ g}$
By rounding it to two decimal places:
$15\text{ oz}\approx 425.24\text{ g}$