When you test starch with Barfoed’s reagent, what would be the answer, positive or negative? Explain your answer by giving reasons and structures.

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

All motion is caused by force? true or false

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules