This equation indicates that the reaction gives off heat. What is this type of reaction called?

C3H8 + ? O2 → 3CO2 + 4H2O + heat

A.

synthesis reaction

B.

decomposition reaction

C.

endothermic reaction

D.

exothermic reaction

When an experiment is replicated, how should the results of the two experiment compare?

Which of the following are vectors? Check all that apply. A. Distance B. Force C. Acceleration D. Energy E. Time F. Speed G. Momentum H. Velocity

The volume flow rate in an artery supplying the brain is 4.00 10-6 m3/s. (a) If the radius of the artery is 4.50 10-3 m, determine the average blood speed.

What is common to all light sources, including incandescent, fluorescent, neon, halogen, laser, and sodium-vapor devices?

What happens when two forces act in the same direction? open study

If element X has 17 protons, how many electrons does it have?

A 2.0-kilogram laboratory cart is sliding across a horizontal frictionless surface at a constant velocity of 4.0 meters per second east. What will be the cart's velocity after a 6.0-newton westward force acts on it for 2.

A boat floats with 25% of its volume under water. a. What is the boatâs density? b. If the boat was made from 500 kg of metal, what is the volume of the boat? (Assume the air in the boat has negligible mass and density) c.

Why does each mineral have their own property, different from every other mineral?

Earth's tallest mountain ranges are found at plate boundaries