Question

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Answer 1

Answer:

Newton's second law of motion can be formally stated as follows: The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.

Answer 2

Answer:

Given:- (A) 46g of Na, (B) 8g of O2, (C) 0.1 mole of hydrogen

To find: Calculate the number of particles in each of the following:

Solution:-

(A) 46g of Na

1 mole of Na contains=6.022×10²³atoms

46g of Na atoms will contain.

$\frac{6.022 \times {10}^{23} \times 46 }{23} = 1.2044 \times {10}^{24atoms}$

(B) 8g of O2

1 mole of O2 molecule contain = 6.022×10²³atoms

Hence, 8g of O2 molecule contain

$6.022 \times {10}^{23} \times \frac{8}{32} molecules$

= 1.5055×10²³ molecule

(C) 0.1 mole of hydrogen

1 mole of carbon atom=6.022×10²³atoms

Hence, 0.1 mole of carbon atom=6.022×10²³×0.1

→ 6.022×10²²atoms

Hence answer is 6.022×10²²atoms