4. When referring to the element phosphorus on the periodic table

osphorus on the periodic table, the number 15 represents

A. energy level.

B. atomic weight.

C. atomic number.

D number of atoms.

How does the nuclear charge relate to the energy of the 1s orbital?

A beetle crawling around on a desk walks 19 cm in 17 seconds to the right. It then changes direction and walks 6 cm in 6 seconds to the left. What is the average speed of the beetle in cm/s?

Why is the killing of American Indians by European colonists and explorers between the 15th and 19th centuries considered genocide? O A. Because it was a deliberate attempt to eliminate a group of people O B.

How do you calculate friction

A car whose mass is 1000 kg is traveling at a constant speed of 10 m/s. Neglecting any friction, how much force will the engine have to supply to keep going the same speed? (Think Inertia) (Look at the units)

Reimbursement means that a client is A. able to apply for healthcare insurance and refunded for a partial sum of the payment plan by the state. B.

Meg runs a 10km race in 45 minutes (0.75 hours). What was her speed in kilometers per hour? a. 22 km/hr b. 7.5 km/hr c. 4.5 km/hr d. 13 km/hr

If you are an astronaut slowly drifting away from the space station, you might be able to drift back to the station by throwing a 555-kg tool rapidly in the direction that you are traveling (away from the station) A. False B. True C. Don't ask me D.

The loss of an electron from a neutral helium atom results in

What happens during the intake and compression strokes of a four stroke engine?