Final answer:
To find the moles of Ba(NO₃)₂ in a 100.0 ml of 1.50 M solution, we multiply the concentration (1.50 M) by the volume in liters (0.100 L), yielding 0.150 moles. The correct answer is B: 0.150 moles.
Step-by-step explanation:
To calculate the moles of Ba(NO₃)₂ in the solution, we need to use the concentration of the solution and its volume. The concentration is given as 1.50 M, which means there are 1.50 moles of Ba(NO₃)₂ per liter of solution. Since we have 100.0 ml (or 0.100 liters), we can find the moles by multiplying the concentration by the volume in liters.
Moles of Ba(NO₃)₂ = 1.50 moles/L × 0.100 L = 0.150 moles
Therefore, the correct answer is B: 0.150 moles.