DO ANY OF YALL KNOW THIS 1. Why do we need to use the mole to count atoms? (2pts) 

 
2. What is the Molar mass of the following? Show your work
  a. H2O2  (4pts) 
   b. C2H6  (4pts) 

During trial 2, what allowed you to determine that aluminum was the limiting reactant? check all that apply. all of the copper dissolved. all of the aluminum dissolved. the solution turned clear. the number of grams of copper(ii) chloride used in the reaction was greater than the number of grams of aluminum. the molar ratio of copper(ii) chloride to aluminum was greater than 3: 2, the equation’s molar ratio.

Water (2510 g ) is heated until it just begins to boil. if the water absorbs 5.09×105 j of heat in the process, what was the initial temperature of the water?

If i can still dissolve more sugar into the solution at a certain temperature what would i call that solution