250 mL of gas is in a balloon at 0.50 atm and 50 °C. What will the new volume be if the temperature is lowered to 0 °C and the pressure is increased to 1 atm?

Agas mixture with a total pressure of 745 mmhg contains each of the following gases at the indicated partial pressures: co2, 245 mmhg ; ar, 119 mmhg ; and o2, 163 mmhg . the mixture also contains helium gas. part a what is the partial pressure of the helium gas? phe p h e = nothing mmhg request answer part b what mass of helium gas is present in a 10.2-l sample of this mixture at 283 k ? m m = nothing g request answer

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions

At the current rate, a graph of carbon dioxide produced by fossil fuels over time would slope upward slope downward be horizontal be vertical