If 12 atoms of hydrogen enter into a chemical reaction how many atoms of hydrogen must come out of the reaction

Which of these events is an example of resonance? A. A bridge collapses due to the overloading of vehicles using it. B. A baker kneads dough by pounding it repeatedly. C The sound of two guitars changes from loud to soft every second.

Fossils provide evidence about all of the following except

Austin drove to a friends house 144 miles if he got there in three hours how fast was he driving

a. Convert 21.0 cm to inches. Show your dimensional analysis setup. b. Convert 29.7 cm to inches. Show your dimensional analysis setup. c. State the dimensions, in inches, of the international standard for a letter-sized piece of paper. d.

What are the three properties of a magnet?

How does an atom of chlorine-37 become a chloride ion with a - 1 charge? 17 35.45 O A. The atom gains 1 electron, to make a total of 21. O B. The atom gains 1 electron, to make a total of 18. O C. The atom loses 1 proton, to make a total of 36. O D.

What is the momentum of a 500-kg car moving at 10 m/s?

Which statement describes the formation of a nebula? A. An elliptical flattened disk begins. B. A bulging core with irregular stars around it forms. C. A large flattened core at the center contracts. D. Gases from a dead star gather and contract.

What are 4 things that can happen to a light wave when it hits an object?

Which of the following is NOT a strategy to prevent falls? a. keeping walking surfaces free from moisture and clutter b. replacing damaged electrical cords c. installing handrails for stairs d. keeping a ladder handy for reaching high places