Given the reaction Ca + HCI → CaCl2 + H2. If there are 9.00 grams of Ca and 9.00 grams of HCI, What is the limiting reactant? What is the excess
reactant? Explain how you came up with your answer.

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.

Spaghetti sauce can be high in sodium. what is a good guideline for mg of sodium per half cup serving? a. less than 1 mg b. less than 800 mg c. less than 700 mg d. less than 400 mg