A car travels northwest for 2 hours and covers a distance of 90 miles. What is the average velocity of the car?
a 45 mi/h northwest
b 42 mi/h northwest
C 36 mi/h northwes
d 40 mi/h northwest

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate