1. If 155 g of CuSO4 is dissolved in enough water to make 2.25 L of solution, what is the molarity of the solution? 2. What mass (in grams) of NH4Cl is needed to prepare 250 mL of a 0.35 M ammonium chloride solution?

3. What is the volume needed to have a 2.11 M Solution of CaBr2 in water if you are dissolving 172.0 g of CaBr2?

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Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. a solution containing 3.50 g of sodium carbonate is mixed with one containing 5.00 g of silver nitrate. how many grams of sodium carbonate, silver nitrate, silver carbonate, and sodium nitrate are present after the reaction is complete?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.