An electron has an uncertainty in its position of 630 pm.

The mass of a nitrogen atom is 14 u. What is the mass, in grams, of 2 mol of N?

How many moles of carbon dioxide are produced when 5.0 moles of butane react completely

True or false: Because of the Law of Conservation of Matter ... if you have 24 atoms in the reactant, you must have 24 in the product.

Identify the independent and dependent variables. Peter is conducting an experiment to see how much salt will dissolve in water as the temperature of the water is increased.

A compound composed of electrically chargerd atoms is called?

To what chemical reaction class does this reaction belong? 2 mg (s) + o2 (g) 2 mgo (s)

Which best illustrates how particle arrangement changes when solids change into liquids

Express in scientific notation (6.0x10^4) (3.1x10^-1)

How do you measure the mass of a liquid?

Given the following information, calculate the mass for B-11. B-10 has a natural abundance of 19.9 percent, while B-11 has a natural abundance of 80.1 percent. The mass of B-10 is 10.013 amu.