A machine has an efficiency of 70%. How much woke does the machine do when 20,000 J of work is done on it?

Kc for the reaction N2O4 2NO2 is 0.619 at 45 degrees C If 50.0g of N2O4 is introduced into an empty 2.10L container, what are the partial pressures of NO2 and N2O4 after equilibrium has been achieved at 45 degrees C?

How many parts are there in the name of ionic compound

What is the definition of solution?

What's the word of a theory that states that earths crust and upper mantle are broken into sections which move around on a special layer of the mantle?

Which is not a property of a pure substance? uniform composition varying composition fixed composition

What happens when light from the sun passes through any type of matter? the light slows down. the light speeds up. most of the light is absorbed. most of the light is reflected.

What is the chemical name for Fe (HCO3) 2

How are protons, electrons, and neutrons correctly compared

You compare two layers to a because the crust and upper mantle are solid

A substance that speeds up the rate of a chemical reaction is called a. a catalyst. b. a lipid. c. a molecule. d. an element.