Question

Which of the following has a mole ratio 1:1?

• A. 7g of N and 12g of Na
• B. 20g of Na and 20g of Ca
• C. 14g of N and 24g of Mg
• D. 10g of Ca and 6g of C

Hint:

To find the mole ratio, divide the mass of each substance by its molar mass and compare the resulting number of moles.

Answer 1

The Correct Option is C

Step 1: Calculate the moles for each substance.
For nitrogen (N), the molar mass is 14 g/mol, so 14g corresponds to 1 mole.

For magnesium (Mg), the molar mass is 24 g/mol, so 24g corresponds to 1 mole.

Step 2: Identify the mole ratio.
Since both nitrogen and magnesium have equal molar quantities (1 mole), the ratio of moles is 1:1.