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

The accompanying drawing represents a mixture of three different gases. (a) rank the three components in order of increasing partial pressure. (b) if the total pressure of the mixture is 1.40 atm, calculate the partial pressure of each gas.

A swimmer moves through the water at 2.5 meters per second and experiences a drag force of 240 N. How much power is she generating?

Sara is sitting in the back seat as her father drives at a constant speed. If Sara's father presses on the brakes quickly slowing the car down, what slows Sara down? A. air resistance on the inside of the car B.

Noah rides his bike 16 kilometers in 2 hours. What is his average speed? A) 8 miles per hour B) 8 kilometers per hour C) 32 meters per hour

What happens when bromine reacts with carbon? A. Electrons move from carbon atoms to the bromine atoms B. Electrons move from bromine atoms C. electrons become delocalized among the atoms D.

A tape dispenser is an example of which simple machine pulley lever inclined plane screw

A brick with a mass of 20 kg and a weight of 196 N is released on a frictionless plane at an angle of 30°. What is the acceleration of the brick? A. 4.9 m/s2 B. 5.6 m/s2 C. 8.5 m/s2 D. 9.8 m/s2

As light reflects off a mirror the angle between the incident ray and reflected ray of light is 50°. What is the angle of reflection?

In what part of the earth does convection occur?

13.00 cm + 2.56 mm + 0.0047 = cm? Solve problem with correct number of significant digits