If a mixture has a total mass of 150 grams and contains 50 grams of vitamin D, what is the mass of calcium in the mixture?

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Multiple Choice

If a mixture has a total mass of 150 grams and contains 50 grams of vitamin D, what is the mass of calcium in the mixture?

Explanation:
Mass in a mixture adds up: the total mass equals the sum of the masses of all components. If the whole mixture weighs 150 g and vitamin D accounts for 50 g, the remaining mass must be calcium, assuming those are the two components present. So 150 g minus 50 g equals 100 g, meaning the calcium mass is 100 g. This fits the idea that the total is partitioned between the known component and the other component; the other options would imply either more than the total, equal to the vitamin D portion, or no calcium at all, which don’t match the given information.

Mass in a mixture adds up: the total mass equals the sum of the masses of all components. If the whole mixture weighs 150 g and vitamin D accounts for 50 g, the remaining mass must be calcium, assuming those are the two components present. So 150 g minus 50 g equals 100 g, meaning the calcium mass is 100 g. This fits the idea that the total is partitioned between the known component and the other component; the other options would imply either more than the total, equal to the vitamin D portion, or no calcium at all, which don’t match the given information.

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