Physical Chemistry Answers

A 20.0L tank contains 0.225 kg of helium at 18 degrees celcius. The molar mass of helium is 4.00 g/mol.

1. How many moles of helium are in the tank?

2. What is the pressure in the tank in Pascals and in atmospheres?

1. Synthesis of compound in the gaseous phase reaction has been studied at two temperatures. At 298 K, the kp value is 1.22×10-3 and at 498 K the kp value is 2.16. Calculate the standard enthalpy change of this chemical reaction. Where value of R is 1.987Cal K-1mol-1.

The vapor pressure of 1-propanol is 10.0 torr at 14.7 °C. Calculate the vapor

pressure at 52.8 °C.Given:

Heat of vaporization of 1-propanol = 47.2 kJ/mol

2. Suppose you are synthesizing a compound in the gaseous phase reaction and you want to calculate the value of kp while having information about initial conditions. At 325 K, the kp value is 1.42×10-3 and What will be kp value at 598 K. Where value of standard enthalpy is 1.59 Kcal and R is 1.987Cal K-1mol-1.

1. Synthesis of compound in the gaseous phase reaction has been studied at two temperatures. At 298 K, the kp value is 1.22×10-3 and at 498 K the kp value is 2.16. Calculate the standard enthalpy change of this chemical reaction. Where value of R is 1.987Cal K-1mol-1.

Show that the function Ae-2x is an eigen function of operator δ^2/δx^2

The value of Kp, for water gas reaction is 1.06×105 at 298 K. Calculate the standard state Gibbs energy change of reaction at 298 K. Where value of R is 8.314 J K-1mol-1.

Suppose you are synthesizing a compound in the gaseous phase reaction and you want to calculate the value of kp while having information about initial conditions. At 325 K, the kp value is 1.42×10-3 and What will be kp value at 598 K. Where value of standard enthalpy is 1.59 Kcal and R is 1.987Cal K-1mol-1.

1. Synthesis of compound in the gaseous phase reaction has been studied at two temperatures. At 298 K, the kp value is 1.22×10-3 and at 498 K the kp value is 2.16. Calculate the standard enthalpy change of this chemical reaction. Where value of R is 1.987Cal K-1mol-1.

What would be the pressure in atmospheres inside of a 50.0 L tank containing 7.28 grams of helium at 20

C?