Final answer:
The mass of 1.89 milliliters of water is 0.00189 kilograms.
Step-by-step explanation:
To find the mass of 1.89 milliliters of water, we need to convert the volume to cubic centimeters since the mass is given in grams per cubic centimeter. Since 1 milliliter is equal to 1 cubic centimeter, 1.89 milliliters is equal to 1.89 cubic centimeters. Given that 1 cubic centimeter of water has a mass of 1 gram, the mass of 1.89 cubic centimeters (or milliliters) of water is 1.89 grams.
To convert grams to kilograms, divide the mass in grams by 1000. Therefore, the mass of 1.89 milliters of water is 0.00189 kilograms.