A student mixes 86.3 g of water at 50.3°c with 60.9 g of water at 16.7°c in an insulated flask. what is the final temperature of the combined water?

Classify these objects, using properties of matter: paper clips, rubber bands, wood chips, straight pins, strips of aluminum foil, and glass beads.

Isotopes of an element will always have the same A. number of protons. B. number of neutrons. C. number of electrons. D. mass.

Describe each of the following as a physical or chemical property. 1. Apple slices turn brown when exposed to air. 2. At room temperature, mercury is a liquid. 3. Phosphorus will ignite when exposed to air. 4.

Which has a larger radius f or - f

Pressure is measured in newtons per

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