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Mixtures of helium and oxygen are used for scuba diving. For a particular dive, 46 liters of O2 at 25 degrees celsius and 1.0 atm and 12 liters of He at 25 degrees celsius and 1.0 atm are pumped int
Give the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by the element.
If you find that it takes 0.1050 moles of sodium hydroxide to reach the equivalence point how many moles of acetic acid were present at the beginning of the titration
Choose the correct Lewis electron-dot symbols that depict the monatomic ions formed from each of the reactants, and predict the formula of the compound the ions produce.
Molecules which are polar overall exhibit a property called a dipole moment. Which of the following possesses polar bonds but has no dipole moment
Draw the structure resulting from a reaction of a) diborane (B2H6) followed by b) alkaline hydrogen peroxide (NaOH/H2O2) with the following alkene.
A 2.50 liter container is filled with 175g of Argon. If the pressure is 10.0 atm, what is the temperature.part B: If the temperature is 225 K, what is the pressure
A sample of nitrogen gas was collected over water at 20 degrees celsius and a total pressure of 1.00 atm. A total volume of 2.50 x 10^1 mL was collected. What mass of nitrogen was collected
The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution. Calculate the pH of the final solution. Report pH to 2 decimal pla
Phenol (C6H5OH, also called carbolic acid) has a pKa of 9.89. It is used to preserve body tissues and is quite toxic. Calculate the percent ionized in 0.0503 M phenol--a dilute solution.
What is the precipitate that forms when aqueous ammonium sulfide reacts with aqueous copper (II) nitrate
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
if i have 0.04M SDS, 0.01M NaCl , the volume of SDS is 0.2 ml and the total volume is 50.2 ml then how i calculate the concentration of ions from the mixed solution of SDS/Nacl
A 5.00 Liter cylinder contains 860 g of Ar gas at 27 degrees celsius. Calculate the pressure of the gas in the cylinder
what is the structure of A 1:1 molar ratio of methane and oxygen, and calculate the oxygen balance
Calculate the reversible potential difference between the two wires when the activity of dissolved zinc chloride is 0.01 molal (mol/kg H20). Indicate the direction of the spontaneous reaction and the
which of the water samples that you tested had the highest calcium concentration? does this correlate with the total dissolved solids results you obtained
Which of the water samples that you tested had the highest calcium concentration. does this correlate with the total dissolved solids results you obtained
What mass of CO2 will be produced when 100.0 g of C8H18 react completely in the equation? 2C8H18 + 25O2 = 16CO2 + 18H2O
A 4.00 g sample of the metal nitrate M(NO3)2, in which M is an unknown metal was dissolved in water and treated with excess aqueous sodium sulfate. The sulfate salt that is formed in the reaction we
When you calculate the molarity and molality of the EDTA solution are the values very similar or not. Explain if this is what you might expect for a dilute aqueous solution with a density very close
Calculate the reversible emf of the cell and its temperature coefficient and determine the amount of heat to be supplied or removed from the cell to maintain a constant temperature of 25 oC under reve
How many mL of .200 M FeCl3 are needed to react with an excess of Na2S to produce 2.75 g of Fe2S3 if the percent yield for the reaction is 65%? 3Na2S + 2FeCl3 = Fe2S3 + 6NaCl