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Atomic Theory

Q. Two different compounds are obtained by combining nitrogen with oxygen. The first compound results fro combining 46.7 g of N with 53.3 g of O, and the second compound results from combining 17.9 g of N and 82.0 g of O. Calculate the ratio of the mass ratio of O to N in the second compound to the mass ratio of O to N in the first compound. Express your answer numerically.

Solved • Feb 8, 2020

Atomic Theory

Q. Identify the statements that are correct. Check all that apply.

Solved • Feb 8, 2020

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?

Solved • Feb 3, 2020

Atomic Theory

Q. Compound A and Compound B are binary compounds containing only elements X and Y. Compound A contains 1.000 g of X for every 2.388 g of Y. Which mass ratio for Compound B below follows the law of multiple proportions with Compound A? 0.7452 g X: 2.270 g Y 0.3583 g X: 0.5994 g Y 0.6096 g X: 1.092 g Y 0.5473 g X: 1.397 g Y 0.5583 g X: 0.5363 g Y

Solved • Feb 2, 2020

Atomic Theory

Q. This image shows the molecules involved before the reaction and after the reaction. Must the number of molecules present before a reaction equal the number of molecules present following the reaction? 2 molecules of H2 gas + 1 molecule of O2 gas → 2 molecules of H2O gas a) yes b) no

Solved • Jan 30, 2020

Atomic Theory

Q. Change the mass of SF6 and examine the ratios of moles of F and S and atoms of F and S. Are the ratios always equal to 6 F : 1 S? a) yes b) no

Solved • Jan 30, 2020

Atomic Theory

Q. What is the ratio Enter your answer as an integer.

Solved • Jan 30, 2020