Does earth core have more iron than earths crust?

Why must living things rely on thousands of catalysts for chemical reactions necessary for life?

Despite the name, dry cleaning does involve the use of liquid solvents. why would a dry cleaner use both polar and nonpolar cleaning solvents

A 0.100 mile sample of gas is at a temperature of 85.0 degrees C and a volume of 3.47 L. What is the pressure of the gas (in mm hg?)

What is reactant, atom, product, and molecule

What is true of a solution of 1.0 M HCl (aq) ?

Which of the following is NOT true of nitrogen fixation? (A) it is a process that occurs exclusively in some species of prokaryotes (B) it sometimes occurs in bacteria that are mutualistic symbionts in plant roots (C) it is the metabolic process

What two pieces of information do u need to describe force

Why are the atomic masses for most elements not whole numbers?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?

Carbon monoxide reacts with oxygen to form carbon dioxide. 2 CO (g) + O2 (g) → 2C02 (8) In a 1.00 L flask, 3.40 atm of CO reacts with 2.60 atm of O2. Assuming that the temperature remains constant, what is the final pressure in the flask? 4.30 atm 2.