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

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols