Which of the following has six electrons in its valence shell?

1oxygen

2nitrogen

3sodium

4neon

Each incomplete reaction is a neutralization reaction. Match each equation with the salt formed. 1. H2SO4 + 2NH4OH →? 2. 2NaOH + H2CO3 →? 3. HNO3 + KOH →? Reaction : Na2CO3 Reaction : KNO3 Reaction : (NH4) 2SO4

The reaction of methane with water to form carbon dioxide and hydrogen is nonspontaneous at 298 K. At what temperature will this system make the transition from nonspontaneous to spontaneous? The data refer to 298 K.

Molality of 150. g H2SO4 solute dissolved into 900. g H2O solvent.

Determine the number of moles in a 1.50 L sample of 0.625 M solution of NaCl.

Which of the following is true concerning rainforest deforestation? a. It enhances soil's water carrying capacity. b. It contributes to global warming. c. It reduces or eliminates flooding and erosion. d.

Which of the following will most likely happen if you apply unbalanced forces to an object? It will change position. It will become charged. It will change mass. It will change size.

Magnetism easily separates what mixture? A). Sand and glass B). Sand and iron C). Sand and clay D). Sand and aluminum

Match the science with the best description?

Can magnetism be used to identify a substance

Nitrogen dioxide dimerizes to give dinitrogen tetroxide: 2NO2 (g) → N2O4 (g). At 298 K, 12.55 g of an NO2/N2O4 mixture exerts a pressure of 0.963 atm in a volume of 6.92 L. What are the mole fractions of the two gases in the mixture?