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To prepare a sample of hydrogen gas, a student reacts 14.78 grams of zinc with acid:
Zn(s) + 2H (+) = Zn (2+) + H2 (g)
The hydrogen is collected over water at 22 degrees C and the total pressure of gas collected is 768.mm Hg. What is the partial pressure of H2? What volume of wet hydrogen gas is collected?
Find the mass of AlCl3 that is produced when 25.Og of Al2O3 react with HCl according to following equation Al2O3+6HCl-
The average person burns 12000 kJ of food energy per day(2,800,000 cal.) If the heat of combustion of sugar is 4000 cal/g, and the heat of combustuio of fat is 9000 cal/g: How many grams of sugar must eat to get a day's supply of energy
Consider the coordination compound, (CoCl(NH3)4(H20))SO4. Use the definition in the Introduction to identify the a) the ligands b) the complex c) the coordination sphere d) the coordination number of cobalt
Write a chemical equation that shows hydrogen fluoride dissolving in water and write a sentence to explain why the solution will conduct electricity.
a sample of sodium reacts completely with 0.142 kg of chlorine forming 234 g of sodium chloride. what mass of sodium
What is the wavelength of an electron traveling with a velocity of 7.0 times 10 to the 3rd power?
Cl2+2KBr yields 2KCl+Br2- how many moles of potassium chloride are produced from 119 g of potassium bromide
Determine the total work produced during this process.
Ascorbic acid (vitamin C,C6H8O6) is a diprotic acid (ka1=8 x 10-5 and Ka2 = 1.6 x 10-12). Explain what is the pH of a 0.210 M solution of ascorbic acid
If hydrogen and Fe3O4 are the products when iron as well as steam is mixed, state a balanced chemical equation for this chemical reaction
The first ionization energy for Na is 495.9 kJ/mol. Compute the maximum wavelength of light in nm required to ionize a single Na atom.
Solubility Constant, Ksp of Reactant, The chemical reaction representing the soluability of AGBr is: AgBr (right and left arrow) Ag^+ +Br^-
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