In what way does a catalyst increase the rate of a chemical reaction? it increases the concentration of reactants. it reacts with a portion of the reactant particles. it provides additional kinetic energy to reactant particles. it lowers the activation-energy barrier.

Which of the following statements concerning the influence of culture on ethnic identity formation is accurate? a. one will reject ethnic identity if cultural stereotypes are encountered. b. if one’s ethnic city is different from the dominant cultural group, then one’s ethnic identity you will become weekend. c. if an the ethnic group is excepted by dominant culture, then ethnic identity formation can be a difficult process. d. similarity to the dominant culture can determine how easy it is for one to except ethnic differences.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

What is the percentage of hydrogen in nitrogen trihydride