How many moles are in 59.301g NaF

Un elemento posee dos isótopos cuyos números de masa suman 68 y la semisuma de sus neutrones es 19. Determine el grupo de este elemento en la Tabla Periódica Actual.

What happens when an electron absorbs energy? A. The electron moves from a lower energy orbital to a higher energy orbital. B. The electron falls into the nucleus. O C. The electron moves from a higher energy orbital to a lower energy orbital. O D.

What are chemical bonds

Given the reaction: Ba (OH) 2 (aq) + H2SO4 (aq) - - >BaSO4 (s) + 2 H2O (l) + energy As the barium hydroxide solution is added to the solution of sulfuric acid, the electrical conductivity of the acid solution decreases because the (1) volume of the

My sister needs this answered! Donald is creating an experiment to determine if fertilizer affects plant color. He makes this statement: "If each plant receives a different amount of fertilizer, then the plant's color intensity will change.

How many moles are in 25.2g of KMnO4?

Lewis diagram of Ozone

Name the feature of the ocean floor shown at A and describe how it's formed.

A certain element consists of two stable isotopes. The first has a mass of 62.9 amu and a percent natural abundance of 69.1 %. The second has a mass of 64.9 amu and a percent natural abundance of 30.9 %. What is the atomic weight of the element?

Nonmetals rarely lose electrons in chemical reactions because?