3 years ago

Which scientist is known as the father of chemistry *?

Chemistry

1 answer:

noname [10]3 years ago

3 0

The correct answer is <span>Antoine-Laurent de Lavoisier. Hope this helps!</span>

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State the difference between sugar in water and pebbles in water

Usimov [2.4K]

Sugar is made of molecules that are bonded together based on the positively and negatively charged areas. They will slowly dissolve in water. Pebbles are solids. They will sit in water for a long time. Though shale pebbles will break apart or fall apart.

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2 years ago

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VladimirAG [237]

the answer is A or B

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3 years ago

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tiny-mole [99]

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3 years ago

Given the molecular formula, C9H13N, the correct empirical formula<br> is

Lesechka [4]

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3 years ago

A 3.540-g sample of an unknown metal M is burned in the presence of excess oxygen, producing the oxide M2O3(s) and liberating 18

pshichka [43]

Answer:

a) Sm

Explanation:

Hello,

This substantiation could be done by knowing how to compute the released energy for 1 mol the oxide. Thus, for Sm, the computation turns out into:

$Q=-1823.0\frac{kJ}{mol}*\frac{1molSm_2O_3}{348.72gSm_2O_3} *3.540gSm_2O_3\\Q=-18.5kJ$

The sign just indicates that the heat is released due to the chemical reaction and it matches with the indicated heat in the statement.

Best regards.

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3 years ago