Based on the number of valence electrons, what is the correct formula when nitrogen bonds to hydrogen?

A) NH2

B) NH3

C) NH4

D) N2H

Why must you operate the exhaust blower before starting a boat's inboard gasoline engine?

1. What causes an object to be at rest? Describe why it might not truly be at rest.

Which particle rarely interacts with matter? a. proton b. photon c. positron d. neutrino

Read the paragraph and then answer the question. "A giraffe has to stretch its neck to reach leaves for food. Over time, the giraffe's neck gets longer from being stretched. The giraffe will then pass on this elongated neck to its children.

7. A neutral aluminum rod is at rest on a foam insulating base. A negatively charged balloon is brought near one end of the rod but not in direct contact with it. In what way, if any, will the charges in the rod be affected?

The effects on marijuana can last up to

A ball is dropped from an initial height and allowed to bounce repeatedly. On the first bounce (one up-and-down motion), the ball reaches a height of 32 inches. On each successive bounce, the ball reaches 75% of its previous height.

An inductor with an inductance of 3.50 H and a resistance of 8.00 Ω is connected to the terminals of a battery with an emf of 4.00 V and negligible internal resistance.

An example of a decomposition reaction is A. AB>A+B B. AX+B>A+BX C. A+B>AB D. AX+BY>AY+BX

An example of sunlight passing through clouds during sunset, results in what is often called the cloud's silver lining. Pastel shades of blue, pink, purple, and green can be observed at times of cloud cover.