Since your problem doesn't suggest a salinity level, we'll assume this calculation is for pure water.

Volume is measured in cubic centimeters, or cm^{3}.

1g of water at 20°C is 0.9982cm^{3}, so to find the volume of 998g we can do some simple multiplication:

- 998 * 0.9982 = 996.2036

So 998g of water at 20°C fills a volume of 996.2036cm^{3}.

Had the water been 4°C the calculation would have been even easier as 1g is equal to exactly 1cm^{3}, so 998g is 998cm^{3}.

As a bonus tip, here's a calculator that will convert grams per cubic centimeter to pounds per cubic inch.

With schools back in session, *The New Star* is reporting that it's time to get your brain back in gear!