How many significant figures? How do you count it if it is in equation form like below?   4.300 x 106

You have 741.9 mls of water and you want to make a 1.184 molar (M) solution of barium hydroxide.  How many grams of barium hydroxide must you add to that volume of water?   Answer must NOT contain units. Use proper significant figures.

You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with 323.1 mL of a 7.465 M isopropyl alcohol solution, and dilute it with pure water. After the dilution, you end up with a 1.856 M solution. What is the final volume of the solution after the water has been added? Enter your answer in the units of L (liters), do not enter the unit.

lculation questions require you to enter a numerical answer. You should not include units in your reported an ough you should note them in your calculations. Unless the problem specifically ask for an answer in the pro significant figures, it is often in your best interest to enter as many digits as your calculator will give you. 1 Question 1 Given the unbalanced chemical equation, C5H12(1) + O2(g) → CO(g) + H20(1), which one of the following correctly expresses the mole ratio between CO and oxygen? 5 mole CO/11 mole O2 O 1 mole CO/1 mole O2 O 10 mole CO/11 mole O2 O 10 mole CO/6.5 mole O2 Question 2