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?

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in the given question, the partial pressure is calculated by using the ideal gas equation, that is, pv = nrt

here, p is pressure, v is volume = 25 l, n is number of moles = 0.0104 moles, r is gas constant = -0.0821 l.atm / mol.k

t is temperature = 273 k

p = nrt / v

p = (0.0104 mol × 0.0821 l.atm / mol.k × 273 k) / 25 l

= 0.0093 atm

it's all four options.

i do not get it   at all