Question

0.5 mole of sodium bicarbonate does not contain​

Answer 1

Answer:

6.022×10^23 molecules of carbon.

Explanation:

we know that 1 mole contains 6.022×10^23 , so 0.5 moles contain 3 ×10^23 molecules , As only one carbon is present in one molecule of sodium bicarbonate, so the no. of atoms of carbon will be equal to no. mole of molecules of sodium bicarbonate , so 3×10^23 atoms of carbon will b present and not 6.022 ×10^23.

Answer 2

Answer:

Sodium Bicarbonate contains $6.022*10^{23}$ molecules of carbon.

Explanation:

• 0.5 moles contain 3*1023 molecules because we know that 1 mole contains 6.022*1023 molecules. As there is only one carbon atom per sodium bicarbonate molecule, the number of carbon atoms will be equal to the number of moles of sodium bicarbonate molecules, or 31023.

• By using the periodic table and adding the atomic weights of each element in the sodium bicarbonate formula, carbon atoms will be present rather than the 6.022*1023 formula weight. ( )= 84.0 grammes . One mole of sodium bicarbonate is necessary to create a 1 M solution. 84.0 grammes of sodium bicarbonate should be weighed.