Choose whether the reaction is exothermic or endothermic 2C(s) + 2H2(g) → C2H4(9) --Select--
2H2(g) + O2(g) → 2H20() --Select--
N2(g) + 3H2(g) → 2NH3(9) --Select--

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.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

What produces wave a)sound b) heats c)transfer of energy d)vibrations