Question

3. Calculate the number of carbon atoms present in 12g of glucase.​

Answer 1

Answer:

How many atoms of carbon are present in 20 grams of glucose?

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The chemical formula of glucose is C6H12O6

Molar mass of carbon: 12.011

Molar mass of hydrogen: 1.008

Molar mass of oxygen: 15.999

So molar mass of glucose = 6*12.011 + 12*1.008 + 6*15.999 = 180.156

Hence, 20 grams of glucose is 0.111 moles of glucose

Avogadro’s number = 6.022*10^23

There are 6 moles of carbon in each mole of glucose

0.111 * 6.022*10^23 * 6 = 4.011*10^23

So there are 4.011*10^23 carbon atoms in 20 grams of glucose