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Effectus [21]
3 years ago
6

3. Calculate the mass in grams of 2.75 moles of Copper.

Chemistry
1 answer:
hichkok12 [17]3 years ago
3 0

Answer: 174.6g

Explanation:

Number of Moles= mass/molar mass

Therefore mass= Number of moles x molar mass

Molar mass of copper= 63.5g/mol

Number of moles= 2.75mol

Mass= 63.5 x 2.75

Mass=174.6g

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Why does coal usually produce more soot than other fossil fuels when burned?
Elenna [48]

Answer and explanation;

Coal has aromatic hydrocarbons with high molar mass and has a high ratio of carbon to hydrogen. Burning coal produces more soot than burning other fossil fuels does because of it.

Fossil fuel mixtures of hydrocarbons that formed from the remains of plants or animals. Burning fossil fuels increases the amount of carbon dioxide in the atmosphere. This increase may affect temperatures, amounts of rain and sea levels worldwide. Some sulfur and nitrogen are in fossil fuels, and air contains nitrogen.

6 0
3 years ago
Part a how many carbon atoms are in a 2-carat pure diamond that has a mass of 0.40 g . express your answer using two significant
shutvik [7]

We have to calculate the number of carbon atoms present in 2-carat pure diamond.

The number of carbon atoms present in 2-carat pure diamond is: 0.19 X 10²³ number of carbon atom.

Diamond is one allotrope of carbon. Atomic mass of carbon is 12.

Mass of one mole carbon atom is 12 g. One mole carbon contains Avogadro's number i.e, 6.023 X 10²³ number of atoms.

0.40 g diamond contains 0.40/12 moles= 0.033 moles of carbon atom.

So, number of carbon atoms present in 0.40 g diamond (i.e, 0.033 mole diamond) is 0.033 X 6.023 X 10²³= 1.98 X 10²²=0.19 X 10²³ .

Therefore, 0.19 X 10²³ number of carbon atoms are in a 2-carat pure diamond that has a mass of 0.40 g

3 0
4 years ago
Case #4
stiv31 [10]

Answer: 1.) His action is not justified because he could have done something else like talking with someone.

2.) Some of the negative consequences could be Mr. King could lose his job  or worse not be able to teach again.

3.) Some other options were having him retake the test or talking to the head of the school, or many other things.

3 0
3 years ago
Who created the movie Aladdin?
Lana71 [14]

Answer:

Ron Clements and John Musker

Explanation:

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2 years ago
Is carbon dioxide a iconic or covalent compound
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