Which is an example of a chemical change? a).mixing of poster colors b).formation of clouds c).metal corroding in salt water d).sugar dissolving in water e).separating salt from seawater

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?

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]

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have