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The reaction of soda ash (Na2CO3) with calcium sulphate (CaSO4) in water is represented by the following chemical equation:
Na2CO3 + CaSO4 --> CaCO3 + Na2SO4
Assuming that this reaction is complete and that there is 153mg/l of CaSO4 initially present, what is the mass load of the soda ash taht must be added to complete the reaction in:
a) 1mL of water
b) 10 000m^3 of water
A person's blood alcohol (C2H5OH) level can be determined by titrating a sample of blood plasma with a potassium dichromate solution. The balanced equation is
If 45.0 mL of ethanol (density=0.789 g/mL) initially at 9.0 C is mixed with 45.0 mL of water (density=1.0 g/mL) initially at 28.6 C in an insulated beaker, and assuming that no heat is lost, what is the final temperature of the mixture
Using activities, calculate the pH of a solution containing 0.019 M NaOH plus 0.0120 M LiNO3
A testing facility found that 8.35*10^23 molecules of carbon dioxide were produced when a sample of octane was burned in air. If this combustion process is known to produce an 86.7% yield, how many grams of octane were in the sample?
The equation for osmotic pressure is = MRT, where ? is the osmotic pressure (in atm), M is the total molarity of solute particles.
How is it possible that hard water can also be very saline ie The River Murray in South Australia? If sodium is added to soften hard water, then wouldn't the presence of salt in hard water 'soften' the water naturally
Calculate the percent mass per volume for isotonic solutions containing each of the following solutes at 25 degrees Celsius. Assume a van't Hoff factor of 1.9 for all ionic solutes.
Given that Kw for water is 2.4× 10-14 at 37 °C, compute the pH of a neutral aqueous solution at 37 °C, which is the normal human body temperature.
Draw (S)-3-hexanol, then indicate the stereochemistry of the product formed when it is treated with each of the following reagents
The boiling point of a glucose solution (d = 1.16 g/mL) is 100.21 oC. Calculate the osmotic pressure of that solution at 298K. (glucose = 180.2 g/mol ; kfp for water = 1.86 oC/m ; kbp for water = 0.520 oC/m)
what is the final volume in mL when 5.00 mL of a 12.0 M NaOH solution is diluted to each of the following concentrations a).600 M NaOH. b)1.00 M NaOH. c)2.50 M NaOH.
A sample of 0.836 gm of unknown compound containing barium ions Ba2+ is dissolved in water and treated with an excess of Na2So4. If the mass of BaSo4 precipitat formed 0.7403 gm, what is the percent by mass of Ba in the orginal unknown compund
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