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Problem- A 2.60-g sample of solid Ca(NO3)2 * 4H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 c?
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Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition
Explain why are the themes in "The fall of the house of usher" so important? Prepare a research paper on this. What kind of information will you use to make 7 to 8 pages?
If you wish to obtain 10.0 grams of copper metal from copper(ii) sulfide, what mass of copper(ii) sulfide must you use
Aerosol cans carry clear warnings against incineration because of the high pressures that can develop upon heating. Suppose a can contains a residual amount of gas at a pressure of 755mm Hg and a temperature of 25 C
Gas particles are attracted to one another and therefore behave as grouped particles.
determine the molarity of each of the ions present in the following aqueous salt solutions.
The temp of the water and that of the gas are identical at 26°C. How many moles of Helium have been evolved?
Chlorine has two stable isotopes, 35Cl and 37Cl. If a sample of chlorine has an average molar mass of 35.78764 g/mol, what percent of the sample is composed of the lighter isotope
What is the pH at the equivalence point when 30.0 mL of 0.20 M HCl are titrated with 0.45 M NaOH at T = 298 K? Kw = 1.00 x 10-14.
Calculate the number of moles of Ascobic acid in the 50.00 ml Sample. Titration Volumes of KIO3 Initial Buret reading/ml trial 1=12.54 trial 2=8.78 Final buret reading/ trial 1=38.74 trial 2=34.93 Volume of KIO used/ml trial 1=? trial 2=?
Problem- 1.00 mole of N2O4 is placed in a 1.00 L reaction vessel at 298 K: Chemical analysis indicates only 3.5% of the reactant decomposes. Calculate Kc.
If you start the experiment with 0.500 grams of Nickel (II) Acetate Tetrahydrate, how many grams of nickel acetate are in the sample
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