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

In terms of orbit, the Earth Is to the sun as what is to the Earth? A-Mars B-the moon C - A comet D-Venus

The attraction between the Sun's gravity and Earth's gravity holds Earth in is?

How many significant figures does 50.003 00 have?

Here's a basketball problem: A 87.2 kg basketball player is running in the positive direction at 7.0 m/s. She is met head-on by a 102.0 kg player traveling at 5.2 m/s toward her. If the 102.0 kg player is knocked backwards at 2.

If you weigh 690n on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 19.0 km?]

What should a free-body diagram look like for a skydiver that is still speeding up as he falls? There is an arrow up for air resistance and an arrow down for gravity. The arrows are the same length.

As a rocket moves farther and farther upward from the launch pad, what happens to the strength of Earth's gravitational field around the rocket? a. It gets weaker. b. It grows stronger. c. It remains constant.

Sully uses a battery and a coil of wire to create an electromagnet. Using the same materials, if he wants to increase the strength of his electromagnet, he must the number of loops in the coil of wire along its length.

How long does it take for light from a star that is 8 light years away to reach Earth? Question 7 options: 8 earth minutes 16 earth minutes 8 earth years 16 earth years

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?