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if 27.0mL of 0.01M NaOH are required to neutralize 1.22g of an unknown acid, HA, what is the molecular unit of the unknown acid? Balanced equation: NaOH + HA --> NaA + H20
To the alchemists, gold was the material representation of purity. It is a very soft metal that can be hammered into extremely thin sheets. If a 1.07 g piece of gold is hammered into a sheet whose area is 30.0 ft2,
Calculate the equivalent number of moles of potassium permanganate? 3) calculate the clarity of the potassium permanganate solution?
How many moles of hydrogen gas are produced when 0.066 mole of sodium is completely reacted?
One of the steps in the commercial process for converting ammonia to nitric acid is the conversion of ammonia to nitric oxide.
What mass of NaN3(s) must be reacted in order to inflate an air bag to 74.6 L at STP?
The combustion of 45.0 g of methane (natural gas) releases 2498 kJ of heat energy. How much energy in kilocalories kcal would combustion of 0.670oz of methane release.
A 0.300 M solution of an acid, HZ, has a pH = 1.301. What is the value of the ionization constant, Ka, for this acid?
A solution containing 100g of an unknown substance and 900g of water. The solution has a Freezing Point of -3.33*C. What is the molar mass of the substance?
An element has two isotopes with masses of 62.9396 u and 64.9278 u,and 30.83% of the atoms are the heavier isotope. Calculate the atomic mass of this element and give its name and symbol.
A Newman projection is given for six conformations about the C2-C3 bond of isopentane. On the curve of potential energy versus angle of internal rotation for isopentane, label each energy maximum
calculate that how many liters of carbon monoxide gas, measured under the same conditions, is essential?
An excess of zinc metal reacts with 500. mL of 12M hydrochloric acid and produces 48.8 L of hydrogen gas at 20 degrees C and 750 torr. a)Determine the mass of zinc metal reacted b)Determine the percent yield for the reaction
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