Consider the reaction MnO2 + 4HCl --> MnCl2 + Cl2 + H2O

If 0.86 mol of MnO2 and 1.32 mol of HCl react, which reagent will be used up first? How many grams of Cl2 will be produced?

If you try to move a piano and are unable to move it, did you perform any work in the scientific sense of the word? yes or no?

Explain how scientific advancements have lessened the effects of hazardous events on society.

Which question cannot be answered scientifically? a. how many particles do two gases at the same temperature and pressure contain? b. what happens to a gas at standard temperature and pressure? c. how does a gas react when heated to 100 degrees celsius? d. what happens to a sample of gas at absolute zero?