Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V)
[Ca = 40, N = 14, O = 16]

tyjesma

11 years ago

Ca(NO3)2....40+{(14x2)+(16x3(2))}...40+28+96=196...mass of Nitrogen =28, therefore % of Nitrogen in Ca(NO3)2 = 28 x 100%

/164 =17.1%

Kisakayode

4 years ago

first get the formula for compound.
then calculate the total mass of nitrogen
then divide by the total mass of the compound.
and multiply by 100

GMK2006

2 years ago

Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V). [Ca(NO3)2

Question

Calculate the percentage by mass of nitrogen in calcium trioxonitrate (V).
[Ca = 40, N = 14, O = 16]

Options
A)
8.5%
B)
13.1%
C)
17.1% CORRECT ANSWER
D)
27.6%
Related Lesson: Mass Percentage | Composition of Substances and Solutions


The correct answer is C.

Explanation:
Calcium trioxonitrate (V) is also known as calcium nitrate, which has the formula Ca(NO3)2.

To calculate the percentage by mass of nitrogen in calcium trioxonitrate (V), we first need to find the molar mass of the compound and then the mass of nitrogen within the compound.

The molar mass of calcium nitrate, Ca(NO3)2:

1 mole of Ca = 40 g/mol 2 moles of N = 2 * 14 g/mol = 28 g/mol 6 moles of O = 6 * 16 g/mol = 96 g/mol

Molar mass of Ca(NO3)2 = 40 g/mol (Ca) + 28 g/mol (N) + 96 g/mol (O) = 164 g/mol

Now, let's find the percentage of nitrogen in the compound:

% of Nitrogen = (mass of N / molar mass of Ca(NO3)2) * 100 % of Nitrogen = (28 g / 164 g) * 100 = 17.1%

Thus, the percentage by mass of nitrogen in calcium trioxonitrate (V) is 17.1%.

Israel yaksman

11 years ago

tanxs

ITZwisdom123

1 year ago

the answer is wrong

Havsatt

1 year ago

Wrong answer

uja1

2 months ago

guuuuuuuuuuyyyyyyyyyyyy

Peaceaa

1 year ago

Ca(No3)2=40+(14+48)2=164
Mass of N =14*2=28
28/164*100=17.1%

MastaDan

7 years ago

C

Miriless

2 years ago

Calculate the percentage by
mass of nitrogen in calcium
trioxonitrate (V)
[Ca = 40, N = 14, O = 16]
A. 8.5%
B. 13.1%
C. 17.1%
D. 27.6%

Helen567

4 years ago

calculate the percentage by mass of nitrogen in calcium trioxonitrate (v)

Cklearn

11 months ago

pls can they be a video on iupac nomenclature of inorganic compounds

gbemes

10 years ago

10ks

PHE

4 years ago

Calcium trioxonitrate (v) is written as Ca(NO3)2. Ca = 40, (NO3)2 = (14+{16*3})*2 =124. Ca(NO3)2 =40+124 =164.
% by mass of nitrogen = (value of mass divided by relative formula mass multiply by 100).
=14/164*100 = 8.5%
The answer is A