When a reaction increases heat is that endothermic or exothermic, and is it a chemical or physical reaction?

What happens to food in the digestive system

What is the pH of borax solution with a hydroxide ion concentrattion,[OH-], of 1.25*10^-5M

What functions are performed by all living organisms?

For the balloon to float, what is the minimum temperature tmin of the hot air inside it?

What is the molality of a solution that contains 75.2 grams of AgClO4 in 885 grams of benzene? A.) 0.41 m B.) 8.20 m C.) 4.10 m D.) 0.83 m

Which of the following statements about transition metals is true? a. They are never found uncombined in nature. b. They include familiar metals such as gold, silver, copper, and nickel. c.

Elements can be separated from one another. Question 6 options: True False

One gram of lipid yields about 9kcal of energy. that is due to the high abundance of which chemical element?

Which of the following happens during a chemical change? Check all of the boxes that apply 0 One atom or more changes into atoms of another element. New substances with different properties are formed. O Solids, liquids, or gases may form.

The energy derived from the movement of H + ions down an electrochemical gradient from the intermembrane space into the matrix is used to drive the synthesis of ATP. How many H + ions must be moved into the matrix for the synthesis of 1 ATP?