At a pressure of 2.0 atm, a gas tank contains 5.0 kg of hydrogen gas at a constant temperature. The hydrogen gas was then replaced with 12.0 kg of oxygen gas. Find

i. the amount of hydrogen and oxygen gas in moles

(Given, O = 16; H = 1; R = 8.315 J/mol. K)​
ii. the pressure exerted by oxygen gas.

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

Which of the following is an example of motion in two dimensions?

Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s