Some skin creams claim that they are "pH balanced" yet do not have a pH of 7. what do the manufacturers mean by "pH balanced"

Write a net ionic equation for the reaction that occurs when excess hydroiodic acid and chromium (II) carbonate (s) are combined. Include states and charges.

Which of the following groups MAY have no detectable IR absorption in the range usually associated with an absorption? C triple bond C. Ketene C=C=O bonds. Aldehyde carbonyl. Nitrile. Ether C-O bond.

Given the particle diagram:. At 101.3 kPa and 298 K, which element could this diagram represent?. 1. Rn 3. Ag. 2. Xe 4. Kr

What defines an exothermic reaction? O A. A reaction that needs heat added O B. A reaction that possesses enthalpy O c. A reaction that relies on collisions O D. A reaction that produces heat

Which statement describes the periodic law? Metals are both good conductors of heat and electricity. Atomic masses always increase across a period. Nonmetals are of the most reactive elements.

Which term describes this reaction? CH3Br (aq) + OH - (aq) - > CH3OH (aq) + Br - (aq) a. addition b. condensation c. elimination d. substitution

The elements of which group are nonreactive? halogens alkaline earth metals noble gasses alkali metals

Which best describes the definition of Lewis acids and bases? a general definition based on electron structure a general definition based on hydrogen ion concentration a specific definition based on a compound's ability to accept protons a specific

Question 22 Which change would cause the volume of a balloon to increase? A increasing the temperature of the balloon B increasing the atmospheric pressure C removing gas from the balloon D placing the balloon under water

Wilma dissolves 10,00 grams of glucose with water and the final volume of solute and solvent is 66.67 mL. What is the concentration of glucose in her solution? a. 10% (m/v) O b. 15.% (mv) O c. 25 % (m/v) d. 30.% (m/v) e. None of the above.