The atomic radius of metal X is 1.20 * 102 picometers (pm) and a crystal of metal X has a unit cell that is face-centered cubic. Calculate the density of metal X (atomic weight = 42.3 g/mol).

Why don't all thermodynamically favored reactions occur rapidly? a. Because thermodynamics and reaction rates are unrelated properties. b. The reactants still need to break bonds and overcome the activation energy in order to form products. c.

The weight of an object varies inversely with the second power of the distance from the center of Earth. The radius of Earth is approximately 4000 miles.

What are the characteristics of prokaryotes? A.) A prokaryote lacks a well-defined nucleus. B.) A prokaryote cannot perform basic life functions. C.) A prokaryote lacks cell organelles. D.) A prokaryote is larger than a eukaryote.

If the mass of the helicopter is 4500kg, and the net force on it is 18,000 N, what is the helicopter's acceleration?

A student walked 2km in. 5 hours what is his average speed on the way to school

Why does an object's mass and speed cause it to have kinetic energy?

Eratosthenes used what object to determine the size of Earth? A) Pyramids in Giza, B) Tower in Babel, C) Sphinx in Alezandria, D) Well in Alexandria

A major process by which the Sun's energy is transported around the Earth system?

Charge 1 is - 30 μC, charge 2 is 5 μC, the distance between the charges is 8 cm, and they are located in a vacuum. If the third charge of 3 μC would be placed into position B, i. e.

For water vapor to turn back i to a liquid what do you do to it's temperature