Which of the following is true about a combustion reaction?

a. It is an endothermic reaction.

C. CO2 and H20 are produced.

b. Oxygen must be a reactant.

d. All of the above.

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?

Is the displacement of an object during a specific unit of time.

When attempting to solve a difficult problem, the best scientific approach would be to a. bring together a team of scientists with different backgrounds and perspectives to work together to find a solution to the problem. b.

The Back Saver Sit and Reach from the Fitnessgram measure this fitness component. Question 25 options: A) Cardiovascular fitness B) Aerobic Capacity C) Muscular endurance D) Flexibility

Given the units of force, write a simple equation relating a constant force F exerted on an object, an interval of time t during which the force is applied, and the resulting momentum of the object.

According to Newton's second law of motion acceleration or an object depends upon the ___ of the object and the ___ Acting on it. I'm confused on what the blanks are. I can't find them.

What is the concentration of H + ions at a pH = 7?

Suppose that Paul D. Trigger fires a bullet from a gun. Will the speed of the bullet leaving the muzzle will be the same as the speed of the recoiling gun? Explain.

A certain rock contains large jagged pieces of other rocks cemented by fine particles what type of rock is this explain

Could a nucleus that has one proton but no neutrons exist?