Hat is the pH of a solution with a hydroxide ion concentration of 10-6M? A. pH = 12 B. pH = 8 C. pH = 6 D. pH = 7

How many grams of mercury would be contained in 15 compact fluorescent light bulbs?

A double covalent bond involves two atoms sharing two electrons? True or false

On sunny day the barometer reading was 765 mm Hg What is this measurement in atmospheres

Which statement describes thermal energy? the energy that is associated with electric fields the energy that is stored in chemical bonds the energy that is associated with the pull of gravity the energy that is associated with temperature

For beta radiation, what stops is penetrating abilities? A. Aluminum B. A piece of paper C. Skin D. Thin fabric

True or False: A Solar eclipse occurs when Earth casts a shadow on the Moon.

Compared to a phosphorus atom, a P3 - ion has (1) more electrons and a larger radius (2) more electrons and a smaller radius (3) fewer electrons and a larger radius (4) fewer electrons and a smaller radius

1. Crystals of ammonium chloride, NH4Cl, seem to disappear when mixed with water. The resulting clear liquid containing ammonium chloride and water is a A) compound. B) new substance. C) homogeneous mixture. D) heterogeneous mixture. 2.

During a laboratory experiment you discover that an enzyme-catalyzed reaction has a delta G of - 20 kcal/mol. If you double the amount of enzyme in the reaction, what will be the delta G for the new reaction

A liquid mixture in which particles can be seen and easily separated by settling or filtration is a a. solution. b. suspension. c. solvent. d. solute.