Or a gas with a volum of 475ml at a temperature of -25c is heated to 275c. what is the new volume of the gas if the pressure and number of moles are held constant

The new volume of the gas is 1.04L

Explanation:

You have to apply Charles's Law to solve this:

In two different situations, when you have a gas with the same quantity and  pressure, relation between volume and T° must be the same

Volume / Temperature = Constant

Temperature in K

So;

475 mL/248K = Vol₂ / 548K

(475 mL/248K) 548K = Vol₂

1049 mL = Vol₂

i believe the answer is true.

it is reliable if two scientists recorded it