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How many grams of zinc metal will react completely with 8.2 liters of 3.5 M HCl?
Zn (s) + 2 HCl (aq) ZnCl2 (aq) + H2 (g)
what are the pH and the change in pH after the addition of 0.054 mol hydrochloric acid to the buffer solution?
Household vinegar is aqueous 5.00% acetic and CHC2H3O2 SOLUTION(by mass), if the density is 1,01g/ml calculate the mole fraction, molarity and molality.
The heat of vaporization of water at 100°C is 40.66 kJ/mol. Calculate the quantity of heat that is absorbed/released when 9.00 g of steam condenses to liquid water at 100°C.
58.0 mL of a 1.30 M solution is diluted to a volume of 228 mL. A 114-mL portion of that solution is diluted using 141 mL of water.
An unknown compound contains carbon, hydrogen, oxygen, and sulfur atoms. When a 10.00 mg sample of the unknown compound was combusted, it produced 16.27 mg of CO2, 5.55 mg of water, and 7.90 mg of SO2.
What is the volume of Ammonia gas is dissolved in 40.0 mL of 15.0 M NH 3 solution at STP and Determine what is the vapor pressure of a solution made by dissolving 65.4grams ammonia in 259 grams of H 2 O at 55.0 ºC?
Find the intrinsic conductivity for germanium. (Assuming ni = 2.5x 1019/m3 at room temperature.)
Write down a net ionic equation for any reaction that forms a precipitate and discover the anions that make gas upon adding of hydrochloric acid
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
The water level in a graduated cylinder initially at 211 rises to 282 after a piece of lead is submerged. What is the mass in grams of the lead.
A zero-order reaction has a constant rate of 1.00×10-4 . If after 80.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration.
when a metal was exposed to light at a frequency of 4.63*10^15 Hz, electrons were emitted with a kinetic energy of 3.10*10^-19 J.
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