Through which medium do sound waves travel most slowly?

Which of the following describes an important role scientists have in society?

What is the change in enthalpy of the first reaction below, given the enthalpies of the other two reactions? 2NO (g) + O2 (g) + 2NO2 (g) N, (8) + O2 (g) → NO (g) N, (8) + O2 (g) + NO2 (g) AH = 90 kJ/mol AH° = 34 kJ/mol A. 56 kJ B. - 112 kJ C.

Which of the following is an oxidation-reduction reaction? Which of the following is an oxidation-reduction reaction?

Which will not appear in the equilibrium constant expression for the reaction below

A rock is dropped into a graduated cylinder containing 40mL of water. the new volume is 47mL. What is the volume of the rock? a) 4ml b) 47ml c) 7ml d) 87ml e) 11ml I thibk it is 7ml am I correct?

What is made up of biotic and abiotic features

A particular country has 50 total states. If the areas of all 50 states are added and the sum is divided by 50 , the result is 196 comma 510 square kilometers. Determine whether this result is a statistic or a parameter.

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of xe f 2.

How do we know when two systems have reached thermal equilibrium? (check all answers that apply) a) No heat flows between the two systems. b) One system is colder than the other c) One system is warmer than the other.

Which atom has the highest ionization energy? why is the ionization energy in trat atom greater?