Chemistry Answers

Is carbon soluble in any of these solvents?

• Water
• Hydrochloric acid
• Sodium hydroxide
• Oil
• Chloroform

Aluminum metal melts at 660.4 degrees C. What is the temperature in kelvin?

Determine the number of atoms in 3.50 mol Fe.

A vessel which contains 300 dm³ of nitrogen gas at 25 °C and 100.3 kPa is contaminated with carbon dioxide and water vapour. The mixture of gases is passed through concentrated sulphuric acid to remove the water vapour and a mass loss of 1.00 g is observed. Then, the mixture is bubbled through concentrated sodium hydroxide solution, a further mass loss of 16.20 g is observed. Calculate the partial pressure of each component in the mixture.

A sample of oxygen gas has a volume of 1.2 x 10^-3 dm³ at a temperature of 2.0 °C and pressure of 2.4 atm. What is the volume and mass of the sample of gas under room condition?

What mass of iron is need to react with sulfur in order to produce 96 grams of iron (III) sulfide according to the following equation

2Fe + 3S ---->  Fe₂S₃

determine the molecular formula of the compund with an empirical formula of CH3 and a molar mass of 90.204 g/mol.

what is the percentage of each element in the compound C2H8O2? note that the 2,8 and 2 are their subscript.

Draw 2 chloro 4 fibro aniline

9 bromo 2 ethyl carboxylic acid