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If a sample of Al2(SO4)3 is found to contain 863 mol of Al3+ ions how many moles of Al2(SO4)3 formula units are present?
What mass of propane gas, C3H8, will occupy 860. mL at 880. mm Hg and 81.0°C?
When ammonia is burned in oxygen, free nitrogen gas and water are produced. What volume of ammonia will react completely with 25.0 L of oxygen? What volume of nitrogen gas is formed?
What is the amount of energy packaged in a photon with a wavelength of 310 nm. Calculate the frequency of EM radiation with a wavelength of 1.2 x 10-7 m
Calculate the hydrogen ion concentration for an aqueous solution that has a pH of 3.45.
A gas expands and does P-V work on the surroundings equal to 323 J. At the same time, it absorbs 145 J of heat from the surroundings.
Na2SO4 is dissolved in water to make 450.mL of a 0.250 M solution. How many mles of Na2SO4 are needed
What is the order of a reaction that has the following time and concentration data? Time concentration
when 1.0g of salicyclic acid is used with 2mL of acetic anhydride, which compound is the limiting reagent?
A 1.20 sample of dry ice is added to a 745 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 735mmHg .
CH4(g) + 2 O2 --> CO2(g) + H2O(g) suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. what is the limiting reagnant?
Consider the formation of n-butyl alcohol and NaBr in the presence of H2SO4. If you start with 1.31g of n-butyl alcohol and end up with 1.79g of n-butyl bromide
22.3 g of a substance X dissolves in enough water to make 0.507 L of a 0.779 M solution. Calculate the molar mass of X in g/mol.
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