1. In the following reaction:  Fe2O3 + 3C → 2Fe + 3CO; how many grams of C are needed to react with 16.5 g Fe2O3?

2. Give an example of a physical change and chemical change.


3.  A sample of nitrogen (N2) has a volume of 50.0 L at a pressure of 760 mmHg. What is the volume of the gas when the pressure changes to 1500 mmHg if there is no change in temperature.

4. Calculate the molarity (M) of 4.0 g of KOH in 2.0 L of solution.

5.  Indicate whether the following solutions are acidic, basic or neutral.

  a. [H3O+] = 6.0 x 10-12 M

  b. [H3O+] = 1.4 x 10-4 M

Do you need a similar assignment done for you from scratch? We have qualified writers to help you. We assure you an A+ quality paper that is free from plagiarism. Order now for an Amazing Discount!
Use Discount Code "Newclient" for a 15% Discount!

NB: We do not resell papers. Upon ordering, we do an original paper exclusively for you.