A second order reaction with a single reactant has a rate constant of 3.75x10-3 M-1s-1. After 500.0 seconds the concentration has dropped to 0.104 M. What was the initial concentration? M

Parallel wires exert magnetic forces on each other. What about perpendicular wires? Imagine two wires oriented perpendicular to each other and almost touching. Each wire carries a current. Is there a force between the wires?

Which atmospheric gas is primarily responsible for the greenhouse effect? a. carbon dioxide (co2) b. oxygen (o2) c. nitrogen (n2) d. water vapor

Danny lowers the sails on his boat. He paddles upstream at 19 km/hr. The current is still running downstream at 15 km/hr. What is the actual velocity of the boat? 34 km/hr, downstream 34 km/hr, upstream 4 km/hr, downstream 4 km/hr, upstream

How can naural gas be manged so that we dont run out

Technician A says you use a tire gauge to check the pressure in each tire. Technician B says that tire pressure should be checked when the tires are warm. Which technician is correct? A. Technician B only B. Technician A only C.

A car with a constant velocity of 22 m/s is driven for 6.8 s. How far did it travel? A. 29 m B. 154 m C. 150 m D. 3 m

Which answer correctly describes section 2 of the brain

If the frequency of the motion of a simple harmonic oscillator is doubled, by what factor does the maximum speed of the oscillator change? A) 2 B) 4 C) It does not change. D) 1/2 E) 1/4

What will result in the greatest gravitational force

According to the law of reflection, what is the angle of incidence