Question

calculate the mass of 1. 1 atom of carbon .2. 3.011×1022 atom òf N .3. 3.011×1022 molecule of caustic soda 4.6.023× 1023 molecule of So2 in this 1022, 1023 the 22 and 23 is the power

Answer 1

Given no: of particles = 3.011 × 10²³

No : of moles = Given no: of particles ÷ Avogadro no:

= 3.011× 10²³ ÷ 6.022× 10²³

= 0.5 moles

Molar mass of Nitrogen ( N) = 14 grams

No: of moles = Given mass ÷ Molar mass

∴ Mass = Molar mass × No: of moles

= 14 × 0.5

= 7 grams

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Δ≅hope it helps≅Δ

Answer 2

hey frnd....
1).... We know that, 1 mole of carbon atoms = Gram atomic mass of carbon = 12 g
Also, 1 mole of carbon atoms = 6.022 x 10^23 atoms of carbon.
Therefore
6.022 x 10^23 atoms of carbon weigh = 12 g
So, 1 atom of carbon weigh
= 12/ 6.022 ×10^23
= 1.99 ×10^-10

2).... Avogadro's constant says that 1 mole of any atom contains 6.022⋅1023 atoms. In this case you have 3.011 × 10^22 atoms:
= 3.011 × 10^22/6.022 ×10^23
= 2 × 10^-1

The atomic mass of Na atom will give you the weight of one mole of this molecule: 1 mol = 4.00 gram:
= .2 × 23
= 4.6

3)....No. of molecules of the caustic soda = 3.011× 10^22
Molar Mass of the caustic soda = 40
Using the Formula,
No. of Molecules = Mass/Molar Mass × Avogadro's Number.
3.011 ×10^22 = mass / 40 × 6.022 ×10^23
mass = 1/2 × 40 ×10^-1
mass = 20 ×10^-1
mass = 2

4)... same as 3)

HOPE THIS HELP YOU ☺☺❤❤✌✌✌✌