Question-formula for the compound
Consider the following reaction: 3Li + Z = Li3Z
What is the formula for the compound if we substitute sodium for lithium?
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When heated to 350 at 0.950 , ammonium nitrate decomposes to produce nitrogen, water, and oxygen gases:
A first order reaction has a half-life of 1.34 x 10^-3 hours. If the initial concentration of the reactant is 8.00M, what is its concentration after 4 half-lives?
What volume would a 0.0236-mole sample of helium gas would occupy at a temperature of 24°C and a pressure of 0.750 atm?
What are possible sources of error that might lead to an erroneous determination of the concentration of the acetic acid during quantitative titration?
What is the pH of the solution created by combining 11.50 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? mwith 8.00 mL of the 0.10 M HC2H3O2(aq)?
After the reaction has gone to completion, the pressure inside the flask is 390. torr at 20.°C. What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO2.
A 20.0-mL sample of 0.400 M HBr solution is titrated with 0.400 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
Which of these ionic solids would have the largest lattice energy?
AlBr3 is sold as a solution in CH2Br2. This is a rather exotic solvent and somewhat difficult to work with as well, because of its relatively high boiling point. CH2Cl2 is much more convenient to use in organic synthesis. Assuming AlBr3 is soluble
What mass of water can be heated from 15?C to 100?C by burning this piece of coal?
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