How many neutrons are there in an atom of lead whose mass number is 208?

If you change peanuts into peanut butter is it a chemical or a physical change

A cylinder has a hight of 6 meters and a diameter that is 6 times the measure of the hight using 3.14 for pi which of the following can be used to calculate the volume of the cylinder 3.14) (36m) 2 (6m) (3.14) (18m) 2 (6m) (3.14) (6m) 2 (6m) (3.

A part of the periodic table is shown. A portion of the fifteenth and sixteenth columns of the periodic table is shown. Column 15 from top to bottom reads seven nitrogen, 15 phosphorus, and 33 arsenic.

Sterling silver is: A) a heterogeneous mixture B) colloid C) an element D) Homogeneous mixture

Nitrogen dioxide and water react to produce nitric acid, HNO3, and nitrogen oxide. 3NO2 + H2O - -> 2HNO3 + NO How many grams of NO are produced from 15.8 g of H2O?

How important is the resonance structure shown here to the overall structure of carbon dioxide? how important is the resonance structure shown here to the overall structure of carbon dioxide?

A farmer is analyzing cross sections of his land to determine where to build a well.

A drag racing vehicle travels from 0 to 100 mph in 5 seconds north. what is the acceleration

When dissolving a solid, what happens to the rate of dissolution while stirring the solution

What is the percent composition of sulfur compound that contains 20.8 g carbon and 54.4 g sulfur?