If a piece of copper ii weighted 5g and after it reacted with silver nitrate, 2.4g remained.

How many moles of copper reacted?

How many grams of silver nitrate reacted?

How many moles excess reactant remained?

If .25g of silver was produced, what is the percent yield of this reactant?

Bridget is in science class. her teacher gives her two unknown substances and asks her to determine their relative ph. she places a piece of red litmus paper into both substances. the litmus paper turns purple when she places it into substance i. the litmus paper turns blue when she places it into substance ii. a. substance i is a neutral substance and substance ii is an acid. b. substance i is a neutral substance and substance ii is a base. c. substance i is an acid and substance ii is a base. d. substance i is a base and substance ii is a neutral substance.