Which of the following statements about gases is false?  

A tank containing both HF and HBr gases developed a leak. The ratio of the rate of effusion of HF to the rate of effusion of HBr is ________. YOU MUST SHOW WORK FOR THIS QUESTION

BONUS QUESTION: The enthalpy change for converting 10.0 g of ice at -50.0 °C to water at 50.0 °C is________ kJ. The specific heats of ice, water, and steam are 2.09 Jg-K,  4.18J/g-K and 1.84J/g-K respectively. For H2O, ΔHfus = 6.01 kJ/mol, and , ΔHvap= 40.67kJ/mol.  YOU MUST SHOW WORK FOR THIS QUESTION

On the phase diagram shown above, the coordinates of point B corresponds to the ______.

What type(s) of intermolecular forces exist between Cl2 and CCl4?

If the temperature increases from -10°C  to  10°C  at a constant pressure of 300 torr, the substance will undergo what phase change?

Which statements about viscosity are true?  (i) Viscosity increases as temperature decreases.  (ii) Viscosity increases as molecular weight increases.  (iii) Viscosity increases as intermolecular forces increase.  

A vessel contained N2, Ar, He, and Ne. The total pressure in the vessel was 987 torr. The partial pressures of nitrogen, argon, and helium were 44.0, 486, and 218 torr, respectively. The partial pressure of neon in the vessel was ________ torr. YOU MUST SHOW WORK FOR THIS QUESTION  

Of the following gases, ________ will have the greatest rate of effusion at a given temperature. TELL ME WHY TO SUPPORT YOUR ANSWER

The density of NO2 in a 4.50 L tank at 760.0 torr and 25.0 °C is ________ g/L. YOU MUST SHOW WORK FOR THIS QUESTION