A 0.500 g sample of TNT (C2H5N206) is burned in a bomb calorimeter containing 610 grams of water at an initial temperature of 20.0°C. After the reaction, the final temperature of the water is
22.7°C. The heat capacity of the calorimeter is 420 J/°C.
How much heat was produced in the combustion of TNT?
A. 3374kJ
B. 8.04kJ
C. 2.97kJ
D. 8025 kJ
E. 3.37kJ
Was the heat released or absorbed by the water and calorimeter?
A. Absorbed
B. Released

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

Use examples from the article to explain one positive and one negative effect that chemistry has had on society.

In which situation can a mixture always be called a solution