General Chemistry Answers

A 26 mal solution containing 2.0 M HClO3 is mixed with a 40mL solution containing 0.5 M NaOH. What is the pH of the resulting mixture ?

What is the mass in grams of 35.60 moles of KBR?

At a given temperature the reaction, CO+H₂O<—>H₂+CO₂ produces the following concentrations. Find the K_c.

CO= 0.200 M

H₂O= 0.500 M

H₂= 0.32 M

CO₂= 0.42 M

Find the equilibrium constant of the given reaction if the final concentration are as follows:

CH₃COOH+CH₃CH₂OH<—>CH₃CH₂OOCCH₃+H₂O

CH₃COOH= 0.302 M

CH₃CH₂OH= 0.428 M

CH₃CH₂OOCCH₃= 0.665 M

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).

calculate the mass of H2 needed to react with 5.6 g of N2

Calculate the volume of hydrogen sulphide measured at 15 degree celcus and 1 atm pressure which will react with a solution containing 4g of copper sulphide

Calculate the volume of hydrogen sulphide measured at 15 degree celcus and 1 atm pressure which will react with a solution containing 4g of copper sulphide

Calculate the entropy, for the freezing of 20.0g liquid metal mercury at -38.9˚C.(molar enthalpy of fusion of mercury is 2.33kJ/mol).

Calculate the entropy change, in melting of ice at 0˚C.(heat of fusion of ice is 6.02 kJ/mol)