Answer the following for the reaction: 2HCl(aq)+CaCO3(s)→CO2(g)+H2O(l)+CaC l2(aq) What is the molarity of a HCl solution if the reaction of 204 mL of the HCl solution with excess CaCO3 produces 12.4 L of CO2 gas at 725 mmHg and 20. ∘C?

What are the 4 phases of matter in order of increasing engery content?

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car