For the problem below use the heat equation q=mc/\T to solve for the unknown. Calculate the specific heat capacity of a new alloy if a 15.4 g sample absorbs 393 J when it is heated from 0.0 degree Celsius to 37.6 degree Celsius. (NOTE: To get the full credit, you MUST show the equation with the numbers in the problem substituted in the equation, then solve for the final answer with UNIT).

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What forms when chemical reactions combine pollution with sunlight?

The excretory system,need answers for all: )