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Explain what is the chemical formula of the diatomic molecule in which 0.314 moles of the substance has a mass of 22.26 grams?
a cylinder measuring 3.4 cm wide and 4.0 cm high is filled with gas. The piston is pushed down with a steady force measured to be 275 kpa
Mg + 2HCl --> MgCl2 + H2 For a mass of 0.013 g Mg and 5.0 mL of 1.00 M HCl, in a flask with V = 140.612 mL at 23.5?C. Calculate the vapor pressure of H2 and vapor pressure of water.
a 29.0-g sample of water at 270. k is mixed with 48.0 g water at 340. k. calculate the final temperature of the mixture
Identify the steric number, shape, hybridization about the central atom and molecular polarity of sulphuryl chloride, SO2Cl2.
What is the de Broglie wavelength in cm, of a 12.9 g hummingbird flying at 1.14 102 mph? (1 mile = 1.61 km.)
A 4.50-g sample of LiCl at 25.0 C dissolves in 25.0 mL of water also at 25 C. The final equilibrium temperature of the resulting solution is 60.8 C.
When the following oxidation-reduction reaction in basic solution is balanced, what is the lowest whole-number coefficient or OH-, and on which side of the balanced equation should it appear
Balance the following equation in basic solution. indicate which reactant becomes oxidized during the reaction, which reactant becomes reduced
What is the pH of a solution made by mixing 100.00 mL of 0.20 M HCl with 50.00 mL of 0.10 M HCl. Assume that the volumes are additive.
How many mols of hydrogen are produced from the reaction of .558 mols of zinc with an excess of hydrochloric acid?
The total molarity of acid and conjugate base = 0.100M. A boy adds 4.20 milliliters of a 0.370 M solution to the beaker. Determine how much will the pH change?
a 7.5- sample of hydrogen gas completely reacts with 60.0 of oxygen gas to form 67.5 of water. is the following data
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