Q. 42 The molecular mass of water (H2O... [FREE SOLUTION]

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Chapter 18: Q. 42 (page 512)

The molecular mass of water (H2O) is A = 18. How many protons are there in 1.0 L of liquid water?

Short Answer

Expert verified

The answer is $3.344 . 10^{26} p r o t o n s$

Step by step solution

Description of the molecule of water

The molecular mass of water (H2O) is A = 18.

In water, one molescule has 10 protons, in which eight from oxygen atom as well as one from each hydrogen.

Finding of calculating the number of protons

The number n of moles is

$n = \frac{m}{M} = \frac{p V}{M}$

In this case V is the volume and m as well as M is the molar mass is the mass.

Thus the number of moles is:

$n = \frac{N}{N_{A}} 鈬� N = n N_{A}$

In this case N is the total number of molecules as well as the avogadro number is $N_{A}$ .

Therefore, the combination is:
role="math" localid="1649075772427" $N = \frac{p V N_{A}}{M}$

Thus

$\frac{1000 . 0.001 . 6.02 . 10^{23}}{0.018} = 3.344 . 10^{25} m o l e c u l e s$

Thus, the number of protons $n_{p}$ would be

$n_{p} = 10 N = 3.344 . 10^{26}$

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91影视

The molecular mass of water (H2O) is A = 18. How many protons are there in 1.0 L of liquid water?

Short Answer

Step by step solution

Description of the molecule of water

Finding of calculating the number of protons

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