Explain why the pressure of a gas in a flexible container is always equal to external pressure. *Bonus Question*

Which substance below would have particles with the GREATEST average velocity at 300k?

A) Helium, He
B) Nitrogen, N2
C) Oxygen, O2
D) Water, H2O

City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

How can you use chemical equations to predict the products of the reaction you can carry out?

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.