What is the answer?

Question

Step 1: How many moles of NaOH are present in 28.0 mL of 0.160 M NaOH?

moles of NaOH:

Answer 1

Dimensional analysis (unit factor):

ml x L / ml x mols / L = mols

28.0 ml x 1 L / 1000 ml x 0.160 mol / L = 0.00448 moles