CaC2(s) + 2H2O(l) --> C2H2(g) + Ca(OH)2(aq) How many moles of CaC2 are needed to react with 49.0 g of water?

An angle that measures between 90 and 180° is called a(,

Select 2 statements that are true about the equation y+6=-10(x-3).1) the slope of the line is -102) the slope of the line is 33) one point on the line is (3,6)4) one point on the line is (3,-6)

You give a $4 tip for a meal that cost $22. approximately what percent of the bill was your tip?