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14 solutions

Atomic Theory

Q. A compound of sulfur and oxygen is 50.0% sulfur, 50.0% oxygen by weight. Sulfur and oxygen form another compound, in accordance with the law of multiple proportions. Which of the following is a likely composition for the second compound? answer is 40.0 mass % sulfur 60.0 mass % oxygen.

Solved • Nov 23, 2019

Atomic Theory

Q. The scientific principle which is the basis for balancing chemical equations is a. the Law of Conservation of Mass and Energy. b. Avogadro's Law. c. the Law of Conservation of Energy. d. the Law of Conservation of Mass. e. the Law of Definite Proportions.

Solved • Oct 14, 2019

Atomic Theory

Q. In which atom is the 2p subshell lowest in energy? I chose Boron, but the answer was Nitrogen. Could you explain why?

Solved • Sep 14, 2019

Atomic Theory

Q. Energy states of atoms containing more than one electron are influenced by nucleus-electron and electron-electron interactions. Which of the following statements correctly describes these effects? Answer: Larger nuclear charge lowers energy, more electrons in an orbital increases energy question: could I get an explanation on why that's the answer?

Solved • Sep 14, 2019

Atomic Theory

Q. 16.) Which experiment disproved the “plum pudding” model of the atom. A. cathode ray deflection B. Rutherford’s gold foil C. Millikan’s oil drop D. Dalton’s atomic theory E. bromine

Solved • Sep 14, 2019

Atomic Theory

Q. James Dalton analyzes two compounds in his lab. One contains 42.9% carbon and 57.1% oxygen. The other compound contains 27.3% carbon and 72.7% oxygen. Do these two compounds support his Law of multiple proportions? Hint: Convert the percentages to grams and then figure out the grams of the oxygen per gram of carbon for each compound. Finally compare the ratio of the grams of oxygen between the two compounds.

Solved • Sep 13, 2019

Atomic Theory

Q. Nitrous oxide, N2O , has a mass ratio of nitrogen to oxygen of 1.00 : 0.57. Determine the ratio by mass of nitrogen to oxygen in dinitrogen trioxide, N2O3 , and dinitrogen pentoxide, N2O5 .

Solved • Sep 12, 2019