Agas in a container with a fixed volume was originally at a pressure of 317kpa and a temperature of 154k. what is the new pressure in atm if the temperature is increased to 235k

The answer is: 4.77atm

Since there's a fixed volume, we can use the the Gay-Lussac's Law which stablish a relation between the pressure and the temperature:

P is the volume of the gas

t is the temperature of the gas

k is the proportionality constant

We also have the following equation:

Where:

We are asked to find the pressure in atm, so we must convert 483.73kPa to atm:

Then,

Have a nice day!

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current