Caffeine contains hydrogen, carbon, nitrogen, and oxygen atoms in a fixed ratio.

How many silver atoms are there in 3.78 g of silver?

A student wants to make a 0.150 M aqueous solution of silver nitrate, AgNO3, and has a bottle containing 11.27 g of silver nitrate. What should be the final volume of the solution

Which is the weight, on earth, of a book with the mass of 1.5 kg?

The density of whole blood is 1.05 g/ml. a typical adult has between 4.7 and 5.5 l of whole blood. what is the mass in pounds of 4.7 l of whole blood?

Which type of map projection uses a cone-shaped piece of paper to depict the Earth?

Cartography is the science of

If a sample of gas occupies 400 ml at a pressure of 800 mm Hg, what will be it's volume if the pressure is reduced to 700 mm Hg

Why are water storage tanks usually built on towers or hilltops?

What is convection cell

One example of a decomposition reaction is the electrolysis of water. the chemical reaction can be expressed by the equation 2 h2o →2 h2 o2. the reactant (s) of this chemical reaction is/are?