What are the four major models of an atom that led up to the modern electron cloud model of the atom?

If the element x has 2 protons how many electrons does it have

Monosaccharides are named by the number of carbons in the molecule and ending with ""-ose"" the level of sweetness contained in the molecule the source of the sugar followed by the designation of its shape the number of water molecules that can be

A sample of 1.00 moles of oxygen at 50°C and 98.6 kPA occupies what volume?

The element chlorine has an atomic weight of 35.5 and consists of two stable isotopes chlorine-35 and chlorine-37. The isotope chlorine-35 has a mass of 35.0 amu and a percent natural abundance of 75.5 %.

A hydrogen-filled balloon was ignited and 2.10 g of hydrogen reacted with 16.8 g of oxygen. How many grams of water vapor were formed? (Assume that water vapor is the only product.)

How many moles of N are in 0.203 g of N2O?

An atom has a charge of +1 in its nucleus. Which statement must be true in order for this atom to have no net charge? A. The one positive proton has no influence on the overall charge of the atom. B.

A chemist uses 0.25 L of 2.00 M H2SO4 to completely neutralize a 2.00 L of solution of NaOH. The balanced chemical equation of the reaction is given below. What is the concentration of NaOH that is used?

How to find the number of neutrons in an atom

A balanced chemical equation indicates both the number of particles of reactants and products and the number of a. orbits. c. nuclei. b. electrons. d. moles