Author Question: How much kinetic energy does a proton gain if it is accelerated, with no friction, through a ... (Read 55 times)

ashley · **on:** Jul 29, 2018

How much kinetic energy does a proton gain if it is accelerated, with no friction, through a potential difference of 1.00 V? The proton is 1836 times heavier than an electron, and e = 1.60 10-19 C.

A) 1836 eV
B) 1.00 eV
C) 1.60 10-19 eV
D) 1.00 J
E) 1836 J

Question 2

A sealed container holds 0.020 moles of ideal nitrogen (N2 ) gas, at a pressure of 1.5 atm and a temperature of 290 K. The atomic mass of nitrogen is 14.0 g/mol.

How many molecules of nitrogen are in the container? (R = 8.31 J/mol K, 1 atm = 101 kPa)
A) 1.5 1021 mol
B) 3.0 1021 mol
C) 6.0 1021 mol
D) 1.2 1022 mol
E) 2.4 1022 mol