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GalinKa [24]
4 years ago
14

Which option is an example of a physical change?

Chemistry
2 answers:
coldgirl [10]4 years ago
6 0
Where are the other options to pick from ?
Ganezh [65]4 years ago
5 0

Answer: if your quiz has these options to choose from - A: baking a cake B: grinding pepper C: lighting up a grill D: toasting bread, then it would be B: grinding pepper

Explanation: i took a quiz that had this question and i got it correct

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CHC13

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To the nearest gram, what is the mass of of one spoonfull of sugar? g
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Air is made up of about 21% oxygen and 78% nitrogen.
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Read 2 more answers
A woman with diagnosed osteoporosis is told by her doctor to take 1,000 mg of calcium carbonate in addition to increasing intake
spayn [35]

Answer:

400 mg

Explanation:

Given:

A woman with is told by her doctor to take 1,000 mg of calcium carbonate.

Question asked:

How many mg of calcium are in this 1,000 mg regimen of calcium carbonate?

Solution:

As we know:

<em>Amount of elemental calcium in a medicine containing calcium carbonate = 40%</em>

As here doctor prescribed 1000 mg of calcium carbonate to be taken by the woman increasing intake of calcium-containing foods in her diet and including regular weight-bearing exercise, hence amount of elemental calcium in 1,000 mg regimen of calcium carbonate will be,

40\%\ of\ 1000\ mg\\\frac{40}{100} \times1000\ mg\\\frac{40000}{100} = 400\ mg

Therefore, 400 mg of calcium are in this 1,000 mg regimen of calcium carbonate.

6 0
4 years ago
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