How many protons, neutrons, and electrons are present in an atom of aluminum-27?

A compound is found to contain only 24.5 g nitrogen and 70.0 g oxygen. what is the compounds empirical formula.

Which statement accurately describes the chemical symbol of an element? The chemical symbol is always a single letter. The chemical symbol always starts with the same letter as the name of the element.

How is gas different from a liquid

Which of the following elements is NOT a transition metal? a. Copper c. Sodium b. Chromium d. Iron

Which statement correctly explains whether or not this equation is a balanced equation? 2H2O2 → 2H2O + O2 A. The equation is balanced because it follows the law of conservation of mass. B.

Which two body systems contribute to acid-base balance of blood?

In which phase of matter do the molecules that make up the substance have the greatest kinetic energy

The atoms of the elements in this group are the most chemically reactive of the ones listed.

What is the name of NiI2

Give an example of how microorganisms might meet each of the challenges of life