how many molecules in 4Nh3

To determine the number of molecules in 4Nh3, you need to know the Avogadro's number and the formula of ammonia (NH3).

Step 1: Determine the formula for ammonia.
The formula for ammonia is NH3, which means it consists of one nitrogen atom (N) and three hydrogen atoms (H).

Step 2: Find the molar mass of NH3.
The molar mass is the mass of one mole of a substance. In this case, you need to know the molar mass of ammonia (NH3). By looking up the atomic masses of nitrogen (N) and hydrogen (H) on the periodic table, you can calculate the molar mass of NH3.

Nitrogen (N) atomic mass = 14.01 g/mol
Hydrogen (H) atomic mass = 1.01 g/mol

Molar mass of NH3 = (3 × H atomic mass) + (1 × N atomic mass)
Molar mass of NH3 = (3 × 1.01 g/mol) + (1 × 14.01 g/mol)
Molar mass of NH3 = 17.03 g/mol + 14.01 g/mol
Molar mass of NH3 = 31.04 g/mol

Step 3: Convert the given mass or quantity to moles.
Since you have 4Nh3, it means you have 4 moles of ammonia (NH3).

Step 4: Use Avogadro's number to find the number of molecules.
Avogadro's number, denoted as "NA," is approximately 6.022 × 10^23 molecules per mole. You can use this conversion factor to calculate the number of molecules in 4 moles of NH3.

Number of molecules = 4 moles NH3 × (6.022 × 10^23 molecules/mole)
Number of molecules = 24.088 × 10^23 molecules
Number of molecules = 2.4088 × 10^24 molecules

Therefore, there are approximately 2.4088 × 10^24 molecules in 4Nh3.