A teacher is giving a lecture on the changes in world population over the last decade. Which is the best visual aid for the teacher to use?
O a bar graph
O a map
• a line graph
O a diagram

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Calculate the number of moles of ethane in 100 grams

What was bohr’s contribution to the planetary model