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Consider an ordinary 8 fluid oz. glass of water (H2O). Suppose, hypothetically, that all of the water molecules in the glass could be marked. Then, suppose that you poured this glass of water into the ocean and (hypothetically) stirred up the ocean so that all of the molecules were evenly distributed through the entire volume of ocean (= 1.35 billion km^3). If you then extracted the same amount (8 fluid oz) of water from the ocean anywhere in the world, how many of those marked molecules, on the average, would you expect to find?
The concentration fo certain sodium hydroxide solution was determined phthalate(abbreviated as KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol.
Calculate the volume of a .850 M KOH solution necessary to neutralize 25.00 mL of 1.500 M solutions
lemon juice has a ph of about 2.5. Assuming that the acidity of lemon juice is due solely to citric acid, that citric acid is a monoprotic acid,
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) ->2 NO(g) + O2(g) The equilibrium constant KP is 158. Analysis shows that the partial pressure of O2 is 0.44 atm at equilibrium. Calculate the pressure of NO and NO2 in the mixture.
When mixed HCl an acid and NaOH a base will react with each other. a) Write the balanced neutrali zation equation for this reaction
Your chemiluminescence reaction will actually occur very slowly in air. What component of air will bring about this reaction and what is its approximate concentration in air? If you had a stoppered flask with basic luminol and then opened it to th..
How many grams of dry NH4Cl need to be added to 2.50 L of a 0.800 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 8.74? Kb for ammonia is 1.8*10^-5.
6NaOH + 2Al -> 2Na3AlO3 + 3H2 What volume of hydrogen gas (measured at STP) would result from reacting 75.0g of sodium hydroxide with 50.0g of aluminum?
calculate the pH formed by mixing 100 mL of 0.20 M HCL with 50 mL of 0.30 M NaOH.
How many L. of N2 gas are produced at STP when the airbag inflates if the airbag contains 132 g. of Sodium Nitride?
which of the following shows the acids in order from strongest to weakest? The order of atomic radii is I > Br > Cl
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