Hydrogen sulfide, h2s, has the characteristic odor of rotten eggs. if a sample of h2s gas at 755.0 torr and 25.0°c in a 2.00-l container is allowed to expand into a 13.0-l container at 25.0°c, what is the pressure in the 13.0-l container? enter your answer in the provided box. atm

0.153 atm or 116.1 torr

Explanation:

Hello, in the attached photo you will find the numerical procedure to obtain the pressure in the second state.

- Take into account that in the first part, the moles are needed based on the ideal gas equation, because they are subsequently used in the computation of the second state's pressure.

Best regards.

1. the question asks the most appropriate, which seems to rule out "all of the above." your choice appears to be the correct one.

2. the protocol described is good for identifying correlation, but not cause and effect. for cause/effect, you need to devise a protocol that will assign the treatment (or not) to groups that have essentially the same "demographics" with respect to all the other variables. your choice regarding control group seems appropriate. random assignment of treatment (choice d) may be appropriate also. (i think you can argue that b and d are just different descriptions of the same method.)

3. d will randomize the birds, but may not guarantee there are 10 in each group. e will do both, so seems the better choice.

comment on question 2

based on the problem statement, it seems clear that confident, attentive drivers are more likely to use daytime running lights. so, the protocol might need to be devised in such a way that the lights would be turned on or off without the driver's knowledge. (an attentive driver will figure it out.) assigning a confident, attentive driver to a group required to drive without running lights might mess with his/her confidence and attentiveness. you don't want your experiment to do that. (nor do you want the experiment to subject a driver to greater risk of accident as a consequence of driving without running lights.) experiments involving human safety are always problematic.