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Molar Mass

A student wan...

Question

A student wants to have 3.011 × 10²³ atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :
(a) 24 g of magnesium and 6 g of carbon
(b) 12 g of carbon and 24 g of magnesium
(c) 20 g of magnesium and 10 g of carbon
(d) 12 g of magnesium and 6 g of carbon

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Solution

(d) 12g of magnesium and 6g of carbon
The student will have to weigh 12 g of Magnesium and 6 g of Carbon.

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Similar questions

Q. A student wants to have 3.011 × 102³ atoms each of magnesium and carbon elements. For this purpose, how much magnesium and carbon will he weigh in grams?

Q. Which of the following pair of elements represents a mole ratio of 1 : 1 ?
(a) 10 g of calcium and 12 g of magnesium
(b) 12 g of magnesium and 6 g of carbon
(c) 12 g of carbon and 20 g of calcium
(d) 20 g of sodium and 20 g of calcium

Q. Calculate the number of gram atomic mass of magnesium present in a magnesium ribbon weighing

12 g

. Gram atomic mass of magnesium is

24 g

.

Q. Question 23
Calculate the number of moles of magnesium present in a magnesium ribbon weighing 12 g. Molar atomic mass of magnesium is

24 g m o l^{- 1}

.

Q. The number of moles of magnesium present in a magnesium ribbon weighing

12 g

(molar atomic mass of magnesium is

24

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