20cm3 of oxygen diffuses through a porous plug in 50 seconds, how long will it take 80cm3 of methane to diffused through the same porous plug under the same condition

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li