Trends + Principles
The order of electromagnetic radiation from lowest to highest energy.
radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays
The electron and molecular geometry of CH₄
Electron geometry: Tetrahedral
Molecular geometry: Tetrahedral
How many moles are in 18.0 grams of water
1.00mol
Name the compound NaCl
Sodium chloride
Which is not an empirical formula
A) C2N2H8
B) C3H8O
C) BeCr2O7
D) Sb2S3
What is A?
Arrange the elements in order of decreasing atomic size: Cu, Ba, Cl, Cs, Ne.
Cs > Ba > Cu > Cl > Ne.
The electron geometry and molecular geometry of NH₃
How many grams are in 2.50 moles of sodium chloride
146g
Name the compound Fe₂O₃
Iron(III) oxide
Calculate the mass percent of oxygen in water (H₂O)
88.79%
Arrange the elements in order of increasing ionization energy: Mg, P, K, F, Si.
K < Mg < Si < P < F.
The electron geometry and molecular geometry of H₂O
How many molecules are in 0.350 moles of carbon dioxide
2.11×10^23 molecules
Name the compound Cr₂(SO₄)₃
Chromium(III) sulfate
Calculate the percent composition of nitrogen in ammonium nitrate (NH₄NO₃)
35.00%
electrons in an atom will fill orbitals of the lowest available energy first, progressing to higher energy levels only when the lower energy levels are completely filled
The electron geometry and molecular geometry for C₂H₂
What is the mass of 7.50 × 10²² molecules of methane
2.00g
Name (NH4)2SO4
What is the chemical formula for ammonium sulfate?
Determine the percent composition of carbon in glucose (C₆H₁₂O₆)
40.00%
Hund's Rule states...
every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied
The electron geometry and molecular geometry of HCN
How many molecules of carbon dioxide (CO₂) are present in 44.0 grams of CO₂
6.02×10^23 molecules
The name of NH3
What is ammonia?
A compound is found to contain 40.0% carbon, 6.71% hydrogen, and 53.29% oxygen by mass. Determine the empirical formula of the compound.
CH₂O