Question

Calculate the molecular masses of:NaCl , CuSO4 , H2CO3 and H2O​

Answer 1

Answer:

Answer:

a) The molecular mass of h_2CO_3h

2

CO

3

is 64 unit.

b) The molecular mass of C_2h_5OHC

2

h

5

OH is 50 unit.

c) The molecular mass of h_2SO_4h

2

SO

4

is 98 unit.

Step-by-step explanation:

To find : Calculate the molecular mass of the following ?

Solution :

a) h_2CO_3h

2

CO

3

Atomic mass of hydrogen is 1 carbon is 14 and oxygen is 16.

h_2CO_3=1\times 2+14+16\times 3h

2

CO

3

=1×2+14+16×3

h_2CO_3=2+14+48h

2

CO

3

=2+14+48

h_2CO_3=64h

2

CO

3

=64

The molecular mass of h_2CO_3h

2

CO

3

is 64 unit.

b) C_2h_5OHC

2

h

5

OH

Atomic mass of hydrogen is 1 carbon is 14 and oxygen is 16.

C_2h_5OH=14\times 2+1\times 5+16+1C

2

h

5

OH=14×2+1×5+16+1

C_2h_5OH=28+5+16+1C

2

h

5

OH=28+5+16+1

C_2h_5OH=50C

2

h

5

OH=50

The molecular mass of C_2h_5OHC

2

h

5

OH is 50 unit.

c) h_2SO_4h

2

SO

4

Atomic mass of hydrogen is 1 sulphur is 32 and oxygen is 16.

h_2SO_4=1\times 2+32+16\times 4h

2

SO

4

=1×2+32+16×4

h_2SO_4=2+32+64h

2

SO

4

=2+32+64

h_2SO_4=98h

2

SO

4

=98

The molecular mass of h_2SO_4h

2

SO

4

is 98 unit.

Answer 2

Answer:

Nacl=11+17=28,Cuso4=29+16+8*4=29+16+32=77,H2CO3=1*2+12+8*3=2+12+24=38,H2O=1*2+8=10

Explanation:

I hope you my answer stratified