PLEASE HELP ME A 450 ml gas sample has a pressure of 1.25 atm at 65 °C. What is the temperature, in °C, at which the gas will expand to 865 mL with a pressure of 0.89 atm?

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

What is the molar mass of ca(cio4)2

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?