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Calculate the amount of solution (g or mL) that contains each of the following amounts of solute. Express the answer to two sig fiugres and include the appropriate units.
Part A: 5.6g of LiNO3 from a 35% (m/m) LiNO3 solution.
Part B: 45.0g of KOH from a 10.0% (m/m) KOH solution.
Part C: 2.6mL of formic acid from a 19% (v/v) formic acid solution.
A particular diatomic molecule which contains H exhibits a 16.95 cm^-1 spacing between its rotational lines and bond length of 141.5 picometers. Determine the mass (in amu) of the unknown atom in the molecule.
Using curved arrows, show how the species in part (a) can act as Lewis bases in their reactions with HCl, and how the species in part (b) can act as Lewis acids
Assume that the heat required for the vaporization of the alcohol comes only from the aluminum block and that the alcohol vaporizes at 25. Suppose that 1.15 of rubbing alcohol evaporates from a 65.0 aluminum block.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
A substance containing 28.84% Nitrogen, 0.0648g Hydrogen, and Oxygen and Carbon, with (total) mass (of the substance) 1.2953, is burned in excess oxygen to produce 2.241 grams of carbon dioxide.
What structural similarities exist between indigo, tyrian purple, alizarin, picric acid, and the main component of mauveine? The compounds beta-carotene and crocetin are not listed as part of this group
How many moles of HCl are required to react with 0.610 g of Al(OH)3 in the above unbalanced reaction? Use at least as many significant figures in your molar masses as in the data given.
What is the average speed of the sprinter if A sprinter set a high school record in track and field, running 200. M in 22.0s .express your answer in kilometers per hour?
need to generate ammonia from ammonium chloride to use in a reaction. should you use sodium bicarbonate or sodium carbonate?
Assuming the same mass of each, which of the following substances will have the highest temperature change if they all absorb the same amount of heat Gold
Descrbie observable differences between elemental copper and Cu2+ ion and between H2
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.
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