What is the major difference between the periodic table created by Dmitri Mendeleev and the one created by Henry Moseley?

A hot air balloon, when fully inflated, contains 2,800,000 Liter of air. If each mole of air occupies 22.4 L of at a temperature of 120 Celsius, at what pressure is the air at when the balloon is fully inflated?

How to calculate the electronegativity of a molecule with multiple bonds?

Which is also called an alpha particle? the nucleus of a carbon atom the nucleus of a nitrogen atom the nucleus of a hydrogen atom the nucleus of a helium atom

Which of the following correctly describes a Brønsted-Lowry base? A. It accepts protons. B. It donates protons. C. It produces OH - ions in solution. D. It donates an electron pair.

Why was it important to mix your solutions in the proper sequence?

Some elements are solids at room temperature true or false

What is the most expensive element?

Constance is making a vegetable soup that contains carrots, beans, water, salt, pepper, bits of ham, and onions. the soup has to cook for 4 hours. while the soup is cooking, what will happen to some of the minerals that are in its ingredients?

Which of the following form solid solutions? Select all that apply. naturally occurring minerals gases present in air HCl and water sugar and water metal alloys

Alan's go-kart travels 1750 feet per minute, and Barry's go-kart travels 21 miles perhour. Who's go-kart travels faster?