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4 years ago

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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Which of the following molecules nonpolar?

kap26 [50]

Answer:

CHC13

Explanation:

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4 years ago

To the nearest gram, what is the mass of of one spoonfull of sugar? g

Vaselesa [24]

Answer:

the mass of one spoonful of sugar to nearest gram is 10g

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3 years ago

Air is made up of about 21% oxygen and 78% nitrogen.

gladu [14]

I believe its A "Air is made up of about 21% oxygen and 78% nitrogen. In this solution, oxygen is the solute and nitrogen is the solvent.

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4 years ago

Can someone please help ill mark you as brainlest

dexar [7]

Its the molecules have 20 electrons so the bear fainted.

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3 years ago

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