Calculating the DENSITY

Since the required density is in grams per milliliter, we first convert 0.315 liters to milliliters and that is 315 milliliters. Now we get the density,

$\dfrac{500~grams}{315~milliliters}=1.587~\dfrac{grams}{milliliters}$

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Hint: The formula for the density is mass divided by volume. If you forgot this formula, you can see it in the problem. It says in the problem "What is the density of the salt in grams per* milliliter*?"

The key phrase is grams per milliliter. This means that grams is the numerator and milliliter is the denominator.

TIPS FOR ANSWERING: When calculating density, make sure the final answer is given in units of mass (such as grams, ounces, pounds, kilograms) per volume (cubic centimeters, liters, gallons, milliliters). You may be asked to give an answer in different units than you're given. It's a good idea to be familiar with how to perform unit conversions when working these problems. The other thing to watch is the number of significant figures in your answer.

STEP 1: The volume is given in liters .. so we have to multiply 1000 the volume will be counted in mililters 0.315Lx1000 =315mL

STEP 2 : The formula of calculating DENSITY : MASS / VOLUME DENSITY = 500g / 315mL = 1.587 grams per milliliter