General Chemistry Answers

What is the density of a substance with a mass of 23.8 g and a volume of 12.6 mL?

Outline the reactions that crude oil component undergoes during reforming process.

10g of zinc dust

• An informative report title.
• A description of your two chosen metal products.
• An explanation of why your metal products are susceptible to corrosion, and why it is important to protect your products from corrosion.
• An explanation of two different methods for each of your products that can be used to protect them from corrosion.
• An assessment and explanation of any negative environmental impacts created by the corrosion protection techniques used for your products.
• A statement and explanation of which corrosion protection technique you consider to be the best for each of your products, based on how well it works, its cost, and minimal negative impacts on the environment.
• A properly formatted references list.

• An informative report title.
• A description of your two chosen metal products.
• An explanation of why your metal products are susceptible to corrosion, and why it is important to protect your products from corrosion.
• An explanation of two different methods for each of your products that can be used to protect them from corrosion.
• An assessment and explanation of any negative environmental impacts created by the corrosion protection techniques used for your products.
• A statement and explanation of which corrosion protection technique you consider to be the best for each of your products, based on how well it works, its cost, and minimal negative impacts on the environment.
• A properly formatted references list.

The pollutant sulphur dioxide can removed from the air by reaction with calcium carbonate in the presence of oxygen. What mass of calcium carbonate is needed to remove 1 tonne of sulphur dioxide? 

2CaCO₃ + 2SO₂ + O₂ → 2CaSO₄ + 2CO₂

Balance the redox reactions in acidic solution.

1. KMnO4 + FeSO4 => MnSO_{4 +} Fe₂(SO₄)₃ + K₂SO₄

Estimate how much electricity or gas is likely to be saved over a 

period of one year if a living room is double glazed. Make 

explicit your assumptions and, besides quantifying in terms of 

thermal units, give monetary estimates.

why the concentration of water is always remain constant and its equal to one ?

5.2x10^-3 = [0.046]^2/ N2O4