2.A 125.0mL sample of calcium hydroxide is titratedagainst a .5M solution of hydrochloricacid. a.Write a balanced equation for the reaction of calciumhydroxide and hydrochloricacid. (4 points)b. If 2.0mL of the acid are needed to fully titratethe base, how many moles of baseare in the sample? (6 points)c. What is the molarity of the original sample of calciumhydroxide? (4 points)d. Would it take more or less acid to titrate a 200.mL sample of .1M sodiumhydroxide? Explain. (6 points)

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)

To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.