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A 48.4 mL sample of gas in a cylinder is warmed from 19 degrees Celsius to to 88 degrees Celsius. what is its volume at the final temperature?
The half-life for the radioactive decay of is 5730 years. How long will it take for 20% of the atoms in a sample of to decay. If a sample of initially contains 1.1 of , how many millimoles will be left after 2285 years
Given that a sample of air is made up of nitrogen, oxygen and argon in the mole fractions 78% N2, 21% O2 and 1.0% Ar, what is the density of air at sandard temperature and pressure?
Write the equation for the reaction that occurs when Zn is placed in a 1M HCl solution, and determine the net EMF for the reaction.
what is the chemical calculation to figure out the following: calculate the number of moles of each ion present in the following solution: 10.2 mL of 0.451 M AlCl3 solution.
Assume the total heat capacity of the air C air=30 J/K. Describe what's the likely ice will ne after the system reaches equilibrium. b) Estimate theliekly final temperature after reaching equilibrium
How many grams of Cuso4 are needed to prepare a .150 molal solution in 300 grams of water?
An electron in an atom of Lithium sees an effective nuclear charge of 1.91 at a radius of 152pm. An electron in an oxygen atom sees an effective nuclear charge of 4.45 at a radius of 73pm. How much greater is the attraction between an oxygen elect..
The heat of vaporization of 1.0 mole of water at 100°C and 1.0 atm is 40.6 kJ. Calculate the change in entropy for the process H2O(l) → H2O(g). Document your work here.
What is the solubility of MnS, in grams per liter, in a buffer solution that is 0.115 M HC2H3O2 - 0.495 M NaC2H3O2? For MnS, K_{spa}=3*10^7.
Write a balanced chemical reaction describing the decomposition of ammonium nitrate, and calculate the standard heat of reaction using the appropriate enthalpies of formation
This question deals with the reaction between benzene and 1-chloro-2-methylpropane in the presence of AlCl3. Knowing that the arenium ion intermediate has positive charge on the ortho and para carbons
A 10.00 mL sample of a solution of hydrofluoric acid,HF, is diluted to 500.00 mL. A 20.00 mL sample of the diluted solution requires 13.51 mL of a 0.1500 M NaOH solution to be titrated to the equivalence point.
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