Other Chemistry Answers

a) (i) Use EDTA structure to describe hexadentate chelating agent (2mks)

(ii) State four types of EDTA titrations (2mks)



Consider the titration of 50mL Mg 2+ sample in a pH = 10.00 buffer with 0.05M EDTA as titrant. Calculate the amount of Mg in ppm if the titre is 5ml of EDTA (3mks)

Calculate the pH of a 1000-mL buffer solution containing 0.200M NH4OH and 0.300M NH4CI. (3mks)

How to find out the average yield of precipitate

A balloon is filled with 2000 mL of air at a pressure of 2 atm. What is the volume of the balloon if the pressure is changed to 5 atm?

May I please ask if SCl4 2+three dimensional molecular shape is tetrahedral/trigonal pyramidal/bent/linear/trigonal planar?

5. A 931 g block of ice has just melted completely into a liquid. If 4753.2 J of heat are added to the water, what is the final temperature?

what enzyme catalyzes the transition reaction?

They took two 100mL water samples at two different temperatures ,mixed them together, and recorded the temperatures. The temperature of the first was 30 degrees and the temperature of the second was 90 degrees. What was the final temperature of the two when mixed together

A sample of a gas has a volume of 426mL at 330 K. What temperature is necessary for the gas to have a volume of 475 mL? Remember to convert mL to L. Round to the nearest whole number.

How many grams of Oxygen are needed to combust 20 grams of propane?

How many molecules of water are in .895 mol of H2O