What is the mass of 0.750 moles of ammonium chloride (NH4Cl)?

• A. 40.2 g
• B. 53.5 g
• C. 40.1 g
• D. 26.8 g

Answer: (A)

Verified step by step guidance

1. Identify the chemical formula of ammonium chloride, which is NH\_4Cl.
2. Calculate the molar mass of NH\_4Cl by summing the atomic masses of its constituent atoms: nitrogen (N), hydrogen (H), and chlorine (Cl). Use the atomic masses approximately as N = 14.0 g/mol, H = 1.0 g/mol, and Cl = 35.5 g/mol.
3. Determine the total molar mass by adding: 1 nitrogen atom + 4 hydrogen atoms + 1 chlorine atom, i.e., molar mass = 14.0 + (4 \times 1.0) + 35.5 g/mol.
4. Use the formula to find the mass from moles: \(\text{mass} = \text{moles} \times \text{molar mass}\).
5. Multiply the given moles (0.750 moles) by the molar mass calculated in step 3 to find the mass of ammonium chloride.