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A 95 mL stock solution contains 4.35 M Na3PO4. When 28 mL of the stock solution is diluted to 86 mL, how many moles of Na+ ions will be contained in the dilute solution?
Calculate the energy in joules and calories lost when 18.0 {rm g} gold ({rm Au}) cools from 226^circ C to 124^circ C.
Then 1mg of formaldehyde(HCHO, MW=30g/mol) is injected through the septum into the water. Some of the formaldehyde escapes into the gas phase. Consider the situation when a new equilibrium is established. Determine the equilibrium mole fraction of..
Explain why hydrogen fluoride (HF) has a higher boiling temperature that Hydrogen chloride(HCl) even though Hf has a lower molecular weight.
How would you prepare 350mL of a single solution containing 150mM Tris, 5mM glucose, and 5 mM Nacl?
For a van der Waals gas, use the thermodynamic equation of state to find [dU/ dV]T. Compare your result to the corresponding value of the same derivative for an ideal gas. Explain the difference.
A sample of water 53 g with a temperature of thirty six degree celsius is combined to 250 grams of H 2 O at 91 degree Celsius in an insulated container. Determine the final temperature after thermal equilibrium is reached?
a) if you make up a solution of 50mL of 0.1M TRIS in the acid form, what will be the pH. b) If you add 2mL of 1M NaOH to the solution, what will be the pH
a stock solution is prepared by adding 21 ml of 1 m alcl3 to enough water to make 76 ml. what is the cl- concentration
Calculate the equilibrium constant for the following reaction: (Ka of HCOOH = 1.7 x 10^-4) HCOOH (aq) + OH-(aq) HCOO-(aq) + H2O(l)
Considering the given equation 4 C3H5N3O9---> 6 N2+ 12 CO2 + 10 H2O + O2,This reaction generates many gaseous products and a large amount of heat determine what is the maximum amount of Oxygen.
to prepare a 13.9 kg dog (assume volume of 13.9 L) for surgery, 0.0343 moles of an anesthetic was administered intravenously. The reaction in which the anesthetic is metabolized displayed a first half life of 132.5 minutes and a second half life o..
does it mean that the solution will shift towards the products because there is excess of reactants? what does it mean when the solution is orange (is it shifting towards products or reactant)?
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