One millimeter of water weighs approximately:

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Study for the AAMI Certified Associate in Biomedical Technology Exam. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

Multiple Choice

One millimeter of water weighs approximately:

Explanation:
Water’s density is about 1 gram per cubic centimeter. A milliliter is the same volume as a cubic centimeter, so one milliliter of water weighs roughly 1 gram. This convenient rule—1 mL of water ≈ 1 g—is why the correct choice is 1 gram. (If you were thinking of a 1 mm thickness over a small area, that would be a smaller volume and weigh about 0.1 g, but the common teaching uses milliliters, not millimeters.)

Water’s density is about 1 gram per cubic centimeter. A milliliter is the same volume as a cubic centimeter, so one milliliter of water weighs roughly 1 gram. This convenient rule—1 mL of water ≈ 1 g—is why the correct choice is 1 gram. (If you were thinking of a 1 mm thickness over a small area, that would be a smaller volume and weigh about 0.1 g, but the common teaching uses milliliters, not millimeters.)

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