In the wave-mechanical model of the atom, orbitals are regions of the most probable locations of

(1) protons (3) neutrons

(2) positrons (4) electrons

What happens to bonds of the compounds in a chemical reaction

After a rock is rounded how does weathering affect it

What are some causes of chemical changes?

Why are gas bubbles not always a sign of a chemical change?

Which of the following is a scientific question about the cuttlefish? O A. How does the cuttlefish change its colors? O B. Are cuttlefish better than other kinds of fish? O C. How did the cuttlefish get its name? O D.

18,754kg of methanol which has a density of 0.788g/cm3 what is the volume

How is enthalpy used to predict whether a reaction is endothermic or exothermic? A) When the enthalpy of the reactants is higher than the enthalpy of the products, the reaction is endothermic.

In a calorimetry experiment, it was determined that a 92.0 gram piece of copper metal released 1860 J of heat to the surrounding water in the calorimeter (qcopper = - 1860 J). If the final temperature of the copper metal-water mixture was 25.

If i walk 25 steps north than 75 steps south, what is my final position

At a different temperature (this means that Keq will be different than part a)), 6.0 mol of IF5 and 8.0 mol of I4F2 are placed in a 10.0 L container. At equilibrium, 6.0mol of I4F2 are left. Calculate the Keq for the new temperature.