If an atom of nitrogen binds wit three hydrogen atoms to form a molecule of ammonia, how many lone pairs of electrons does nitrogen have?

A. One

B. Three

C. Four

D. Five

After testing a model of a fuel-efficient vehicle, scientists build a full-sized vehicle with improved fuel efficiency. Which stage of technological design does this best describe? a. implement the solution b. evaluate the solution c.

A crying baby emits sound with an intensity of 8.0 * 10-8 w/m2. calculate a reasonable estimate for the intensity level from a set of quintuplets (five babies), all crying simultaneously at the same place? the lowest detectable intensity is 1.

What is the direction of the centripetal force when applied to an object? the direction opposite to the object's velocity the same direction as the object's velocity perpendicular to an object's motion parallel with an object's motion

A car skids to a stop. What happens to its kinetic energy? a) It turns into thermal energy. b) It disappears without a trace. c) It turns into potential energy of the tires. d) nothing: the car still has it, but it is just inactive

How the sun gets access to the earth

Why is carbon and nitrogen important?

Gizmo answer sled wars

3. What is the kinetic energy of a 1300 kg car moving at 26.3 m/s?

Kendall has empty graduated cylinder with markings and an identical graduated cylinder partway filled with water. She also has a balance and a marble. Which statement best describes what Kendall can do? A.

2. With regard to the pH scale, a solution with a pH A. higher than 7 is considered an acid. B. lower than 7 is considered basic. C. of 6 is considered neutral. D. close to 14 is considered a strong base.