General Chemistry Answers

For salts: 1) CrCl 3 ; 2) Na 2 CO 3 ; 3) NaNO 2 ; 4) KCl, compose the shortened ionic-molecular and molecular hydrolysis equations for stage I and determine the pH of the solution (<7,> 7 = 7, ≈7).

Mikaela is a STEM student who is currently having her General Chemistry 2 subject. Today, she is asked by her teacher to prepare CuSO4 solution. Help her do her task by following the procedure and answering the questions below.

1. Obtain sample of CuSO4 from the front bench.

2. Using your scale, weigh out 18g of CuSO4

3. Dissolve the 18g of CuSO4 in 100 ml of distilled water

4. Stir until you have reached a homogeneous solution with all the solute dissolved is the solvent.

Calculate the concentration of your solution (M in mol/L of CuSO4).

Edelman and Gronkowski want to play a game of beach volleyball, if the beach ball has a volume of 400 L at a temperature of 500 k, what will the temperature of the balloon be if the volume decreases to 176 L?

Metal oxides are reduced in reactions that produce pure metal. If the percent yield of iron is 78% when hematite (Fe2O3) is reduced in a blast furnace and 72% when magnetite (Fe3O4) is reduced which ore would produce the greatest amount of iron per metric ton (1000kg) of reactant used?

2 Al + 3 FeSO₃ -> Al₂(SO₃)₃ + 3 Fe

if 136 g of aluminum are consumed, how many moles of iron (II) sulfite are consumed?

2 Al + 3 F₂ -> 2 AlF₃

if 6.30 moles of AlF₃ are produced, what mass of F₂ is consumed?

A piece of iron (II) solid was added to a beaker that contains 0.585 mol per litre copper (II) sulphate solution. The solid copper that precipitated was dried and its mass was found to be 5.02 g. Some unreactive iron remained in the beaker. Calculate the minimum volume of the copper (II) sulphate solution used in this scenario.

a) 135 mL

b) 545 mL

c) 7.41 mL

d) 21.6 mL

A hydrogen atom’s electron moves from the n=4 level to the n=6 level. What is the wavelength of light associated with this transition? Is the light absorbed of emitted?

1. a.Write a balanced chemical equation for the reaction.
2. b. How many moles of magnesium chloride can be produced with 3 moles of chlorine
3. Ethanol burns according to the following equation. If 15.0 mol of C₂H₅OH burns this way, how many moles of oxygen are needed?
4. Solutions of iron (III) chloride, FeCl₃, are used in photoengraving and to make ink. This compound can be made by the following reaction:
   
5. a. How many grams of Fe are needed to combine with 4.5 moles of Cl₂?
6. b. If 240 g of Fe is to be used in this reaction, with adequate Cl₂, how many moles of FeCl₃ will be produced?
7. Ammonia is produced synthetically by the reaction below. How many moles of NH₃ are formed when 200.0 g of N₂ reacts with hydrogen?
8. Iron metal is produced in a blast furnace by the reaction of iron (III) oxide and coke (pure carbon). If 25.0 moles of pure Fe₂O₃ is used, how many grams of iron can be produced? The balanced chemical equation for the reaction is:

The metal extract from limestone,chalk and marble is what