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What is the definition of a Pure substance and what are two examples of pure substances?
if argon of 0.214 mol nbspoccupies 652 ml determine the volume of 0.375 mol of c4h10 gas under the same temperature and
A radioactive sample was analyzed seven times for the isotope ratio with a mean of 1.52793 and a standard deviation of 0.00007. find the 99% confidence interval for the sample
the principal anion and cation in lake huron are hydrogen carbonate and calcium. the concentration of hydrogen
At 46 oC a sample of ammonia gas exerts a pressure of 3.19 atm. What is the pressure when the volume of the gas is reduced to ONE-THIRD of the original value at the same temperature
Problem- Consider the titration of 100.0 mL of 0.0200 M acetic acid (pKa = 4.76) with 0.100 M NaOH. Determine the pH at the equivalence point.
The ideal gas law describes the relationship among the pressure P, volume V, number of moles n, and absolute temperature T of an ideal gas.
a constant electric current deposits 0.365 g of silver metal in12960 seconds from a solution of silver nitrate. what is
Ammonia gas is produced by reacting hydrogen gas with nitrogen gas. To produce 135 g of ammonia gas using air as your source of nitrogen gas, explain what volume of air is required if the air is introduced at 30°C and 735 mmHg. The mole fraction o..
What is the concentration of OH- in a solution that contains 0.225g of NaOH in 0.250L of solutio.
For each of the subsequent ground state atoms, predict the type of orbital (1s, 2p, 3d, 4f, etc) from which an electron will need to be removed to form the +1 ions
aluminum burns in bromine producing aluminum bromide. in a laboratory 6.0 g of aluminum reacts with excess bromine.
the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 degrees Celcius. Explain why the melting point was low and why the melting range was so wide.
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