The reaction P4+5O2 - > P4O12+712 kcal is exothermic.

True

False

If the acid A has a pKa of 5 compared acid B with Pka of 9, how much stronger is acid A over B

Three of the primary components of air are carbon dioxide, nitrogen, and oxygen. In a sample containing a mixture of only these gases at exactly one atmosphere pressure, the partial pressures of carbon dioxide and nitrogen are given as PCO2 = 0.

Substance that hasten chemical reaction time without themselves undergoing change are called

Use appropriate metric prefixes to write the following measurement without use of exponents: 2.3x10^-10 L

Solutions that have more OH - than H + ions are A. reactants. B. acids. C. bases. D. enzymes.

Will a parachute slow a skydiver more at a very high altitude or a lower altitude?

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What is a potential benefit of fuel cell cars? increased efficiency converting gasoline to energy no recharging necessary decreased automobile cost larger engines

Water is a great solvent. For example, it causes ionic compounds like sodium chloride (table salt) to dissociate. One of these reasons that water does is because it is polar molecule.

For most compounds with a single keto group in the molecule, equilibrium favors the keto form over the enol form of the compound. this is due largely to what?