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3 years ago

What is the correct chemical formula for copper carbonate

Chemistry

2 answers:

Alex777 [14]3 years ago

8 0

this should be it hope it helps Cu2(OH)2CO3

NNADVOKAT [17]3 years ago

4 0

Correct answer is Cu2(OH)2CO3

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How many atoms are in 6.7 moles of iron?

sineoko [7]

Answer:

4.034x10^24 atoms

Explanation:

6.7 x 6.023x10^23 = 4.034x10^24 atoms

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2 years ago

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PLEASE HELP I WILL GIVE YOU 50 POINTS

Tamiku [17]

According to Raoult's law, Vapor pressure is directly proportional to the mole fraction of the solution. As 1.0 M CaF2 has least moles here, it has lowest vapor pressure.

In short, Your Answer would be Option D

Hope this helps!

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3 years ago

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A 1.0 g sample of hydrogen reacts completely with 19.0 g of fluorine to form a compound of hydrogen and fluorine. a. What is the

Rashid [163]

Explanation:tr

a) Molar mass of HF = 20 g/mol

Atomic mass of hydrogen = 1 g/mol

Atomic mass of fluorine = 19 g/mol

Percentage of an element in a compound:

$\frac{\text{Number of atoms of element}\times \text{Atomic mass of element}}{\text{Molar mass of compound }}\times 100$

Percentage of fluorine:

$\frac{1\times 19 g/mol}{20g/mol}\times 100=95\%$

Percentage of hydrogen:

$\frac{1\times 1g/mol}{20 g/mol}\times 100=5\%$

b) Mass of hydrogen in 50 grams of HF sample.

Moles of HF = $\frac{50 g}{20 g/mol}=2.5 mol$

1 mole of HF has 1 mole of hydrogen atom.

Then 2.5 moles of HF will have:

$1\times 2.5 mol=2.5 mol$ of hydrogen atom.

Mass of 2.5 moles of hydrogen atom:

1 g/mol × 2.5 mol = 2.5 g

2.5 grams of hydrogen would be present in a 50 g sample of this compound.

c) As we solved in part (a) that HF molecules has 5% of hydrogen by mass.

Then mass of hydrogen in 50 grams of HF compound we will have :

5% of 50 grams of HF = $\frac{5}{100}\times 50 g=2.5 g$

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3 years ago

Jack created a table that compares the characteristics of the sun and the moon. Which of the following corrects the mistakes in

weeeeeb [17]

Answer:

D) The sun is a burning ball of gas, and the moon revolves around a planet.

Explanation:

Unlike what Jack has written in his table, the sun is comprised of 92% gas and has no definable rocky layer or even dust. The moon revolves specifically around the Earth.

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2 years ago

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Select the atoms that are likely to gain electrons to form anions:

aliina [53]

Answer:

Explanation:

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2 years ago