Question

2.
The number of atoms of carbon in 3 moles of Co, are
a) 6 x 10²
b) 12 x 10²³
c) 18 x 10²³
d) 24×10²³​

Answer 1

Answer:

A mole means a collection of 6.023 x 1023 (Avogadro's number) entities. ... molecules, ions, electrons, protons as there are in 12 grams of Carbon-12. ... hence mass of 1 atom of hydrogen is 1.66 x 10-24 gm. OR ... Question 3 – What is the mass of one mole NaCl? ... Total rupees to be spent per year= 106 x 3600 x 24 x 365.

Explanation:

Answer 2

Answer:

$18 \times {10}^{23}$

Explanation:

1 mole of $CO_{2}$ contains......$6.022 ×{10}^{23}$

3 moles of $CO_{2}$ contains...... ?

$= \frac{3 \times 6.022 \times {10}^{23} }{1}$

$= 18\times {10}^{23}$