An atom has a mass number of 27 and 14 neutrons. what is the atomic number of this atom?

Rank the species (amide ion, ammonia, or ammonium ion) from the largest to the smallest H-N-HH-N-H bond angle? Rank from largest to smallest H-N-HH-N-H bond angle. To rank items as equivalent, overlap them.

What is the mass in grams of 4.25 x 103moles of N2?

What's the equation to solid calcium oxide reacts with hydrochloric acid to form a solution of calcium chloride and water as it's products.

With the exception of a species that lives near the Florida coast, sea urchins are basically harmless to people. Which word is an adjective?

What partial pressure of He gas (in mm Hg) is required to maintain a solubility of 8.78*10-4 g/L in water at 25 °C? kH for He at 25 °C is 3.26*10-4 mol/L·atm.

For a chemical reaction to be spontaneous at all temperatures, which of the following conditions must be met? a. ΔS° > 0, ΔH° > 0 b. ΔS° > 0, ΔH° < 0 c. ΔS° < 0, ΔH° < 0 d. ΔS° 0 e.

What is a Binary Compound? Is it related to the Ionic and Molecular compounds? if so, how so?

Which answer correctly describes the difference between covalent and ionic bonds? A. ionic: transfer of protons covalent: transfer of electrons B. ionic: transfer of electrons covalent: transfer of protons C.

What are the first five elementsof the periodic table?

Name 3 characteristics that can be used to identify minerals