The gas pressure in an oxygen tank is 3.90 atm at a temperature of 298 K. If the pressure decreases to 3.20 atm, what is the temperature of the gas in kelvin?

The Moon rises at noon and sets at midnight. What is the phase of the Moon?

How many electrons are involved when two atoms in a molecule are connected by a "double bond"? write the lewis structure of a molecule containing a double bond?

If you have 100.0 grams of carbon and 100.0 grams or iron, which sample will contain more atoms

Flask contains 0.420 mol of liquid bromine, br2. determine the number of bromine molecules present in the flask. express your answer numerically in molecules.

What kind of animal needs to compete to get attention of a potential mate?

Which option is true about the effect of polarity on solubility? Select all that apply. Polar solutes dissolve better in water than in oil. Polar solutes have the greatest solubility in nonpolar solvents.

Which change results in a release of energy? 1. The melting of H₂O (S) 2. The boiling of water (L) 3. The evaporation of H₂0 (L) 4. The condensation of H₂0 (G)

What changes nitrogen gas in the air to nitrogen compounds that fall to the ground

Which element has an isotope mass number of 32 and is used as an ecological tracer?

Which laws can be combined to form the ideal gas law? Boyle's law and Charles's law Gay-Lussac's law and Avogadro's law Charles's law, Avogadro's law, and Boyle's law Dalton's law, Gay-Lussac's law, and Avogadro's law