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Calculate the sodium ion concentration when 72.7 mL of 4.0 M sodium carbonate is added to 33.2 mL of 1.8 M sodium bicarbonate.
A fluorinated organic gas in a cylinder is com- pressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
Calculate the expected pH of the buffer after the addition of 1.0 mL of 1 M HCl. Remember that you are using 50 ml of the buffer so be sure to calculate the number of moles of acetic acid
would the mass of the precipate collected be more, unchanged, or less if performing the reaction with reactants
if 40.0 kJ of energy is absorbed by 500.0 g of water at 10.0 degrees celcius what is the final temperature of water?
4NH3 + 5O2 yields 4NO + 6H2O Given 1.50g of NH3 reacts with 2.75g of O2 which is the limiting reactant?
What is the purpose of running both Dalton Vll mixed markers and lanes with individual markers on SDS-PAGE?
How many Valence electrons does a balanced atom of Sodium have? What is the net charge on each ion?
If 8.00 kJ of heat are added to 200. g of water at 20.0 C, what is the final temperature of the water?
The extent of fragmentation for ionic compounds can be derived by comparing the molality expected if no dissociation with what is actually obtained from experiment.
A 14.0-g sample of CaCl2 is dissolved in 131 g of water, with both substances at 25.0°C. Calculate the final temperature of the solution assuming no heat lost to the surroundings and assuming the solution has a specific heat capacity of 4.18 J/°C ..
Briefly explain how a lake with a limestone bed is more resistant to pH changes than a lake with a granite bed
used as a fixer in the field of photography. Calculate the percentage composition, by mass, of each element in sodium thiosulphate.
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