2 years ago

How do we use chemistry in our everyday life?

1 answer:

6 0

Answer:

we use the chemistry in our day to day life cooking and cleaning with chemical substance

Explanation:

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Vikki [24]

Answer:

c- dry cells can not be recharged

6 0

2 years ago

Ede4ka [16]

All of the above.
................
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7 0

3 years ago

love history [14]

One atom of carbon weighs exactly 12/6.022x10^23 = 1.9927x10^-23 grams<span>.</span>

3 0

3 years ago

svlad2 [7]

69.9%

Explanation:

To find the mass percentage of iron in the compound in Fe₂O₃, we would go ahead to express the given molar mass of the iron to that of the compound.

Mass percentage = $\frac{molar mass of Fe}{Molar mass of Fe_{2}O_{3} }$ x 100

Molar mass of Fe = 55.85g/mol

Molar mass of O = 16g/mol

Molar mass of Fe₂O₃ = 2(55.85) + 3(16) = 159.7‬g/mol

Mass percentage = $\frac{2(55.85)}{159.7} x 100$ = 69.94% = 69.9%

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#learnwithBrainly

4 0

2 years ago

Ivan

Robert A. Millikan and Harvey Fletcher performed the oil drop experiment.

5 0

2 years ago