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3 years ago

Which is the molar mass of H2O?

Chemistry

2 answers:

Anestetic [448]3 years ago

6 0

<u>Answer:</u> The molar mass of water is 18 g/mol

<u>Explanation:</u>

Molar mass of a compound is defined as the sum of mass of every element each multiplied by the number of atoms of that element.

We are given a compound having chemical formula $H_2O$

Molar mass of hydrogen = 1 g/mol

Molar mass of oxygen = 16 g/mol

Mass of water = $[(2\times 1)+16]=18g/mol$

Hence, the molar mass of water is 18 g/mol

Svetllana [295]3 years ago

3 0

H=(2x1.008)=2.016
O= 15.999

15.999
+ 2.016
______
18.015 g/mol :)

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How many moles of PC15 can be produced from 51.0 g of Cl2 (and excess P4)?

slava [35]

Answer:

0.287 mole of PCl5.

Explanation:

We'll begin by calculating the number of mole in 51g of Cl2. This is illustrated below:

Molar mass of Cl2 = 2 x 35.5 = 71g/mol

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Mole = Mass /Molar Mass

Number of mole of Cl2 = 51/71 = 0.718 mole

Next, we shall write the balanced equation for the reaction. This is given below:

P4 + 10Cl2 → 4PCl5

Finally, we determine the number of mole of PCl5 produced from the reaction as follow:

From the balanced equation above,

10 moles of Cl2 reacted to produce 4 moles of PCl5.

Therefore, 0.718 mole of Cl2 will react to produce = (0.718 x 4)/10 = 0.287 mole of PCl5.

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3 years ago

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Question 6 (0.04 points)

Bingel [31]

I think it’s C
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3 years ago

If eight atoms of iron react completely with six molecules of oxygen, how many units of iron oxide will be formed?

nevsk [136]

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4 years ago

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Answer

The matching is numbered and represented in red arrowsi n the diagram below:

Explanation

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The matching of the process is shown below:

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1 year ago