Chemistry Answers

Visualize a substance with the following points on the phase diagram: a triple point at 0.05 atm and

150 K; a normal melting point at 175 K; a normal boiling point at 350 K; and a critical point at 2.0 atm

and 450 K. The solid liquid line is “normal” (meaning positive sloping). For this, complete the following:

A cylinder whose volume is 34.0 Liters contains 305 grams if elemental Oxygen at 22 degrees Celsius. How many grams of gas must be released to reduce the pressure to 1.15 atm if the temperature remains constant? Give complete solution.

1. At 733 mmHg and 114.8oF, calculate the density of HBr gas. Complete solution

The NMR spectroscopy is useful for the detection of

The NMR spectroscopy is useful for the detection of

The shielded proton requiring a external magnetic field of PMR signal is said to absorb upfield

The shielded proton requiring a external magnetic field of PMR signal is said to be absord upfield

Briefly explain the physical and chemical methods of determining the molecular weight or molar mass of high molecular compounds, with examples

If I have 4 moles of a gas at a pressure of 5.6 atm and a volume of 12 liters, what is the temperature?

Au – 198 is used in the diagnosis of liver problem. The half- life of Au -198 is 2.69 days.

If you begin with 2.8 µg of this gold isotope, what mass remains in 10.8 days?