This is the basis of the chemical standard for the quantity of a mole. A. oxygen-16 B. carbon-12 C. hydrogen-1 D. helium-2

Identify the following as the suspension or colloid Fog A.) suspension B.) colloid

Which of these actions would decrease heat transfer between two objects? increasing the temperature of the warmer object increasing the area of their contact reducing the thermal energy of the cooler object reducing the time of their contact

Does the solubility of borax in water increase or decrease as temperature increases

Compounds are formed when the atoms of two or more elements are chemically combined. What type of bond is formed if atoms donate electrons to other atoms when the elements are combined? A. ionic bond B. hydrogen bond C. covalent bond

18 Powdered sulfur is yellow, and powdered iron is gray. When powdered sulfur and powdered iron are mixed at 20°C, the powdered iron (1) becomes yellow (3) remains ionic (2) becomes a liquid (4) remains magnetic

14. Two or more substances that are together but do not combine to form a new, pure substance.

A solution of a compound with a known extinction coefficient of 23,100 M-1cm-1 has an absorbance of 0.735 in a 1.30cm path length, what is the concentration of the solution

Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one". RbOH + H3PO4 → Rb3PO4 + H2O

What is the temperature of 100 liter container having 1 mole of an ideal gas at a pressure of 20 kilopascals

5.2*10^26 molecules of ch4 in volume