Use the concept of ionization energy to explain why sodium form a 1 + ion (Na+) but magnesium forms a 2 + ion (Mg2+).

The bond energy of a chemical bond is the energy required to 1 mole of the bond in the phase. Because bonds is endothermic and bonds is exothermic, we can calculate the overall enthalpy change as a of the enthalpy changes associated with the

The processes of gluconeogenesis and glycolysis are said to be reciprocally regulated. Reciprocal regulation means thata) molecules that activate or inhibit one process have the same effect on the other process.

What is the empirical formula for a compound that contains 0.0134 g of iron, 0.00769 g of sulfur and 0.0115 g of oxygen?

Sid created a chart to summarize characteristics of satellite motion. Which best describes Sid's error? Tangential speed changes throughout a satellite's orbit. Centripetal force is perpendicular to the velocity of the satellite.

In modern times, how often have large lava flows occurred? None at all Moderate amount Very few Frequently

For the following SN1 solvolysis reaction, select the correct rate equation and the overall reaction order (note: CH3OH is the solvent for the reaction). (CH3) 3CCl + CH3OH → (CH3) 3OCH3 + HCl

Which of the following is not a possible sublevel? 1s 2p 3f 4d

Fish breathe oxygen, o2, dissolved in the water. since water is a polar substance and oxygen is a nonpolar substance, how can there be any oxygen, o2, in the water?

Barium carbonate, baco3, is stable at ambient temperatures, but decomposes to barium oxide and carbon dioxide at higher temperatures.

How do an isotope and a radioactive isotope differ?