a sample of gas has an intial volume of 4.00L and intial pressure of 1.04 atm. if the volume expands to 6.03 L, what is thebfinal pressure

altitude, density, pressure

air gets less dense the higher the altitude and also the air pressure is less as altitude rises.

some sources quote the lethal dose, for an average 170lbs opiate-naive individual is between 75 and 375 mg

the answer is c

tell me if wrong

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.