A $5\mathrm{.}5g$ sample of a substance contains only carbon and oxygen. Carbon makes up $35\%$ of the mass of the substance. The rest is made of oxygen.

You are asked to determine the mass of oxygen in the sample.

Which of the following expressions demonstrates a mathematical procedure to solve this problem using the proper order of operations?

View Available Hint$($s$)$

$100-(\frac{35}{100})5\mathrm{.}5$grams$=$

$100-\frac{35}{100}5\mathrm{.}5$grams$=$

$(\frac{100-35}{100})5\mathrm{.}5$grams$=$

$*$Recall that to calculate a percent of an amount in grams means you have to convert the percent to a number and multiply by the amount in grams. For example, $50\%$ means $50$ out of $100,$ or $50$ hundredths. So $50\%$ of $10$ grams is $0\mathrm{.}50$ times $10$ grams. You need to take $0\mathrm{.}50$ and multiply it by $10$ grams to determine $50\%$ of $10$ grams is $5\mathrm{.}0.(50\%$ and $10$ grams are examples and not numbers for this problem.$)$