A 16.0 L gas cylinder has been filled with 6.20 moles of gas. You measure the pressure to be 3.10 atm . What is the temperature inside the tank?

97.44 K

Explanation:

to answer this one you should use the ideal gas law PV=nRT where P=pressure, V=volume, n=number of moles of gas, R=universal gas constant (0.0821), and T=temperature in Kelvin. All you have to do is substitute the givens into the equation.

(3.10)(16)=(6.20)(0.0821)(T)

then simplify

49.6=(.50902)(T)

divide to get T alone and you get about 97.44 K as your answer

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.