Question

whar weight if na will contain same number of atom as are presenr in 1.2 g of carbon
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Answer 1

1 mole of Carbon has weight 12g.

So 0.1 mole of Carbon will have weight 1.2 g.

Now, 1 mole of Carbon contains 6.022×10^23 atoms

So 0.1 moles of Carbon contains 6.022 × 10^22 atoms.

So we need to find the weight of 6.022× 10^22 Sodium atoms.

We know that 6.022 ×10^22 Na atoms is 0.1 mole of Na.

So we need to find the weight of 0.1 mole of Na.

1 mole of Na = 23 g

So 0.1 mole of Na = 2.3 grams

So, answer is 2.3 grams.