General Chemistry Answers

the total kilojoules for one cup of orange juice that contains 26 g of carbohydrate, no fat, and 3 g of protein

Using the sample question above, show the complete ionic and net ionic forms of the following equations. If all species are spectator ions, please indicate that there is No Net Ionic Equation. 

Note: you need to make sure the original equation is balanced before proceeding!

1.     Molecular Equation: 

MnCl₂ (aq) + (NH₄)₂CO₃ (aq)  MnCO₃ (s) + NH₄Cl (aq)

Complete Ionic Equation: 

Net Ionic Equation:

Identify spectator ions: 

HCl(aq)+Zn(s)

Calculate the % dissociation for hypochlorous acid HClO (0.72 M), which is generated by white blood cells and able to kill bacteria (K_a = 2.9 x 10^-8).

A monoprotic weak acid is 2.66 % dissociated in a 3.91 M solution. Determine the equilibrium proton concentration for this acid.

What is the pH of an aqueous solution of 0.006534 M Ba(OH)₂ at 25^oC? (Give your answer to two decimal places)

An oxide element X dissolved in water to form a solution. Phenolphthalein indicator turns from colourless to pink when it is dropped into the solution. What is element X?