HELP ASAP, How many moles of NaOH is needed to neutralize 45.0 ml of 0.30M H2SeO4?
A) 27.0
B) 0.0135
C) 0.027
D) 0.00675

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Particle model to predict what will happen if a sharp object creates a hole in the soccer ball

What is the subscript for oxygen in its molecular formula