In the acid-base reaction between Sr(OH)2 and HNO3, 0.75 L of 0.85 M Sr(NO3)2 is
formed upon the reaction of 0.515 L of HNO3
solution and excess Sr(OH)2. What is the
molarity of the initial HNO3 solution?
1. 2.48 M
2. 0.619 M
3. 1.55 M
4. 0.233 M
5. 4.11 M
6. 0.638 M
7. 1.24 M

Harvey kept a balloon with a volume of 348 milliliters at 25.0˚c inside a freezer for a night.  when he took it out, its new volume was 322 milliliters, but its pressure was the same.  if the final temperature of the balloon is the same as the freezer’s, what is the temperature of the freezer? the temperature of the freezer is  kelvins.

Elements that do not have full outer electron shells will donate, share, or take electrons from other atoms. choose the items that have the correct binary ionic formula.

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?