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What is the mass of 3.5 moles of Mg?
A sample of commercial concentrated hydrochloric acid is 11.8M HCl and has a density of 1.190 g/mL. Calculate the mass % , molality and mole fraction of HCl.
The Al2O3 does not react. If the sample residue weighs 2.456 g, what is the mass fraction of Fe2O3 in the original sample?
How many moles of oxygen are needed to react with 5.0 moles of ammonia? In the above reaction, how many moles of water can be produced from 256 grams of oxygen?
suppose the reaction ca3po43h2o4 3caso42h3po4 is carried out starting with 103 g of ca3po42 75 g of h2so4 .how much
A sample of an ideal gas at 1.00 atm and a volume of 1.89 L was placed in a weighted balloon and dropped into the ocean. As the sample descended, the water pressure compressed the balloon and reduced its volume.
if the chemical reaction has occured by a mechanism that involves more than one step. what is the reaction occurs by
What is the pressure in psi for a pressure head of 46.2 feet? What is the pressure in psi for a pressure reading, in psi, at the bottom of a 30 feet high reservoir, which has a diameter of 50 feet?
Determine the correct formula for this compound; use the "rule of 13" and substitute in O's and N's to generate the possible formulas (ie do not simply use online software to do this problem).
If this experiment was carried out precisely as directed in the procedure section by a student in Australia, for instance, must that student come up with a formula for the magnesium oxide other than MgO. Why not
What is the coefficient of Br- when the following redox equation is correctly balanced. Show the balanced equation. BrO- + Fe(OH)2 > Br- + Fe(OH)3 (basic solution)
Utilizing bond energies, compute the enthalpy change for the burning of one mol of acetylene gas with excess oxygen gas yielding carbon dioxide gas as well as gaseous water (steam)
Problem- Draw resonance structures of the anion produced in the reaction of alpha-naphthol with a base. Show how this anion couples with the diazonium salt.
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