If you start with 0.785 moles of sodium how many moles of hydrogen can be formed? a. 6.3 moles
d. 3.93 x 10- moles
b. 7.85 x 10-' moles e. 3 moles
c. 1.57 moles

22. a flask containing 450 ml of 0.50 m h2so4 was accidentally knocked to the floor. how many grams of nahco, do you need to put on the spill to neutralize the acid according to the following equation: h2so4(aq)+2 nahcos(aq) na,so(aq) +2 h20()+2 co2(g) d) 38 g a) 2.3 g b) 9.5 g c) 19 g

Explain what happens at the saturation point when adding salt to water at room temperature.

Which terms are used to identify pure substances