How many moles of lead, pb, are in 1.50 x 1012 atoms of lead?

What is the concentration of a solution that contains 450mL of water and 200g of iron II chloride

What do we beileve is at the center of the milky way A) two stars that have collided together B) a cluster of stars C) A black hole D) A collapsed planet

Which method is appropriate for separating a mixture of iron and aluminum? A. using a magnet B. distillation C. evaporation D. observing different densities

Why do phase changes occur?

The rate law of the reaction NH3 + HOCl → NH2Cl + H2O is rate = k[NH3][HOCl] with k = 5.1 * 106 L/mol·s at 25°C. The reaction is made pseudo-first-order in NH3 by using a large excess of HOCl.

How to assign oxidation and reduction numbers

How to tell difference between hydrogen gas and oxygen gas?

Why do atoms have different speed

Jose gets up from his seat on the bus to move closer to the front. Just as he begins to walk forward, the bus stops at a light.

How would you present weight change if Earth had twice the mass that it does