calculate the mass in grams of .354 moles of NH3
moles x molar mass = grams.
To calculate the mass of 0.354 moles of NH3 (ammonia), you need to know the molar mass of NH3.
The molar mass of NH3 can be calculated by adding up the atomic masses of nitrogen (N) and three hydrogen (H) atoms.
Molar mass of nitrogen (N) = 14.01 g/mol
Molar mass of hydrogen (H) = 1.01 g/mol
Therefore, the molar mass of NH3 is:
Molar mass of NH3 = (1 * Molar mass of N) + (3 * Molar mass of H)
= (1 * 14.01 g/mol) + (3 * 1.01 g/mol)
= 14.01 g/mol + 3.03 g/mol
= 17.04 g/mol
Now, you can use the molar mass to calculate the mass of 0.354 moles of NH3.
Mass of NH3 = Number of moles * Molar mass
= 0.354 moles * 17.04 g/mol
≈ 6.03 grams
Therefore, the mass of 0.354 moles of NH3 is approximately 6.03 grams.
To calculate the mass in grams of a given number of moles of a substance, you need to know the molar mass of the substance. In this case, we want to find the mass of 0.354 moles of NH3 (ammonia).
Step 1: Find the molar mass of NH3.
The molar mass of a compound is the sum of the atomic masses of all the elements present in the compound. To determine the molar mass of NH3, we need to know the atomic masses of nitrogen (N) and hydrogen (H). The atomic mass of nitrogen is 14.01 g/mol, and the atomic mass of hydrogen is 1.01 g/mol. Since ammonia (NH3) has one nitrogen atom and three hydrogen atoms, the molar mass of NH3 is:
Molar mass of NH3 = (1 * atomic mass of N) + (3 * atomic mass of H)
= (1 * 14.01 g/mol) + (3 * 1.01 g/mol)
= 14.01 g/mol + 3.03 g/mol
= 17.04 g/mol
So, the molar mass of NH3 is 17.04 g/mol.
Step 2: Calculate the mass of NH3.
Now that we know the molar mass of NH3, we can calculate the mass of 0.354 moles of NH3 using the formula:
Mass (g) = Number of moles * Molar mass
Mass of NH3 = 0.354 moles * 17.04 g/mol
= 6.03336 grams
Therefore, the mass of 0.354 moles of NH3 is approximately 6.03336 grams.