An atom has 18 protons and 8 valence electrons which statement would best identify this element

Abrasion is a form of chemical weathering. true false

Chemical bonds are made and broken by: a. energy changes c. chemical reactions b. enzymes d. catalysts

According to cavalieri's principle, which qualities must be congruent in order for two solids to have the same volume? select all that apply. height surface area cross-sectional area apothem length

How do intermolecular forces determine molecular arrangement in solids?

Draw the Lewis structures for the resonance forms of methyl azide (CH3N3). Include all lone pairs of electrons and formal charges.

Bacteria and protists are primarily unicellular organisms. How do bacteria and unicellular protists differ? Options: A) Protists have a single chromosome in a nuclear region, but no nuclear membrane.

A solution contains 0.159 mol K3PO4 and 0.941 molH2O. Calculate the vapor pressure of the solution at 55 ∘C. The vapor pressure of pure water at 55 ∘C is 118.1 torr. (Assume that the solute completely dissociates.)

When 711 J of heat is added to a 41.1 g of an unknown metal, the temperature of the metal increases from 22oC to 94oC. Calculate the specific heat of this metal

What is the formula for copper (II) phosphate? Capitalization and punctuation count. How many atoms of phosphorus are in 7.10 mol of copper (II) phosphate?

What happens to the elements Sodium (Na) and Chlorine (Cl) when they combine to form salt (NaCl)