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Hydrochloric acid reacts with zinc metal to form zinc chloride and hydrogen gas. Explain if 345.2 g of zinc metal reacts with 231.6 grams of acid. Explain how many liters of hydrogen gas are produced? Define how many moles of zinc chloride are produced?
The first point should be at -56.8 degrees Celsius and the last point at 150.0 degrees Celsius. Do not connect the points with a line.
A 4L rigid tank contains 2 kg of saturated liquid vapor mixture of water at 50 C. The water is now slowly heated until it exists in a single phase.
The metal barium crystallizes in a body-centered cubic lattice. If the density of barium is 3.51 g/cm3, what is the unit cell volume?
Calculate the wavelength of the light emitted when the electron in a hydrogen atom falls from the n=4 shell to the n=3 shell. [1eV=1.6023*10^-19 J] report answer in meter and in nanometers
NaOH required for titration of 10 mL of monoprotic acid solution. What was the original concentration of acid? What was the original pH of acid solution if its pKa is 5.3?
If .050 moles of HA were dissolved in 1L of water, calculate the concentration of [HA], [H30+], and [A-] in the solution at equilibrium. What is the pH? Ka=7.94 x 10^-7, equivalence point ~ 9 mL, pH at equivalence ~ 9]
a sodium hydroxide solution is standardized using 0.502g of solid oxalic acid h2c2o4. find the molarity of the base if
The PH of a solution of a solution is 8 , what are the hydrogen - and hydroxide ion concentration
hydrogen gas is collected over water at 21 degrees C and an atmospheric pressure of 748 mm Hg. what is the partial pressure of hydrogen gas in the mixture
a bottle of phosphoric acid is labeled 85 h3po4 by mass density 1.689 gcm3. calculate the molality h3po4 in the
A solution of ethanol (C2H5OH) in water is prepared by dissolving 67.5 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution. What is the molarity of the ethanol in this solution?
Draw graphs representing Boyle's law, Charles's law, and Gay-Lussac's law for a fixed amount of gas. Make sure that you label each axis and state the assumptions for each law-that is, the variable(s) that is (are) held constant for each law.
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