calculate the no. of molecules in 16g of methane is:

See your post on water answered by steve.

6 * 10^23

rewr

To calculate the number of molecules in 16g of methane, you need to use the concept of Avogadro's number and the molar mass of methane.

Here's how you can calculate it step by step:

1. Determine the molar mass of methane (CH4).
- Carbon (C) has a molar mass of 12.01 g/mol.
- Hydrogen (H) has a molar mass of 1.01 g/mol.
- Since methane has 1 carbon and 4 hydrogen atoms, you sum the molar masses: 12.01 + 4(1.01) = 16.05 g/mol.

2. Calculate the number of moles of methane.
- Use the formula: moles = mass / molar mass.
- In this case, moles = 16g / 16.05 g/mol ≈ 0.996 moles.

3. Apply Avogadro's number.
- Avogadro's number (represented by "N") is 6.022 x 10^23 molecules/mol.
- Multiply the number of moles by Avogadro's number to get the number of molecules:
0.996 moles × 6.022 x 10^23 molecules/mol ≈ 5.99 x 10^23 molecules.

Therefore, there are approximately 5.99 x 10^23 molecules in 16g of methane.