Other Chemistry Answers

After removing membranes from an eggshell, the shell is dried and its mass is recorded as 5.613 g. The egg is transferred to a 250 mL beaker and dissolved in 25 mL of 6 M HCL. After filtering, the solution containing the dissolved eggshell is diluted to 250 mL in a volumetric flask. A 10.00 mL aliquot is placed in 125 mL flask and buffered to a pH of 10. Titrating with 0.0500 M EDTA requires 41.11 mL to reach the end point. Determine the amount calcium in the eggshell as %w/w CaCO3.

Consider a thermodynamic system consisting of 3mol of ideal gas occupying 0.03m^3 volume at 300 K temperature determine its initial pressure . for this gas gamma= 1.4 it undergoes the following processes (i) it is compressed to 0.01m^3 volume isothermally . determine the pressure of the gas (i) then it is allowed to expand adiabatically .till it attains 1 atm pressure. Determine the final volume ( 1atm=101325Nm^-2)draw a labelled indicator diagram of this process

1. What are the differences in preparing soap and detergent?

2. What will be the best thing to use in handwashing and dishwashing? Is it soap or detergent?

Why?

3. What will be the best thing to use in cleaning bathroom and countertops? Is it soap or

detergent? Why?

4. Why does the local government prohibit people living in the barrios to launder or to do

laundry in nearby rivers and lakes?

5. What are the tips you can give to make laundering more effective?

6. Why were you able to get a paper clip to float in water?

7. What happened to the surface tension when we added liquid soap?

8. How does surface tension affect the cleaning result of soap and detergent?

9. How do surfactants help in cleaning process?

11. Which is effective in removing oily stains in tap water and distilled water? Is it soap or

detergent?

12. How does the hardness of water affect the cleaning performance of soap and detergent?

13. How do builders help in the cleaning process?