General Chemistry Answers

N2O5(g) + NO(g) ⇋ 3 NO2(g) 

A sample of hydrogen gas at a pressure of 733 mm Hg and a temperature of 25°C, occupies a volume of 13.7 liters. If the gas is heated at constant pressure to a temperature of 49°C, the volume of the gas sample will be

Which of the following is a fission reaction?

carbon-12 and hydrogen-1 combining to form a nitrogen-13 atom

hydrogen-2 and hydrogen-3 combining to form a helium-4 atom and a neutron

uranium-235 absorbing a neutron and breaking into barium-141, krypton-92, and three neutrons

a glucose molecule being metabolized with oxygen to form carbon dioxide and water

Hydrochloric acid (HCl) is a strong acid, meaning it is 100%

ionized in solution. What is the [H+] and the [OH−] in a solution of 2.0×10-3 MHCl?

The purchased cost for a plant which produced product (fluid processing plant) is 200,000$. The plant is to be an addition to an existing plant. The major part of the building cost will be for indoor construction, and the contract's fee will be 8% . All other costs are close to the average values found for typical chemical plant. Estimate the total capital investment?

Calculate the frequency at which it is broadcasting.

Frequency =  KHz

(1 KHz = 10³ sec ^-1)

6 g of dolid magnesium sulphate, MgSO4 is added into a beaker containing 200 dm3 of water. calculate the concentration in g dm-3, for the solution produced

a. A volume of 450 cubic centimeter is measured at a pressure of 740 mm Hg and a temperature of 25.4 oC.

What is the volume in liter? Pressure in pound per square inch and temperature in degree Kelvin?

b. What is the temperature value in degree Fahrenheit when the surrounding is experiencing a 20 degrees centigrade below zero.

200 cm³ of 1.0M HCL and 200 cm³ of 1.0M NaOH at 33.1^oC were mixed in a simple calorimeter. The temperature of the calorimeter assembly increased to 39.3^oC. Calculate the enthalpy of neutralization in kJ/mol. The heat capacity of the calorimeter is 101.8 J/K. Assume the specific heat of the solution to be 4.186 J/g.K and density of solution to be 1.0 g/cm³.