Calcium (Ca) and oxygen (O) combine to form an ionic compound. Which best describes the electron dot formula for this compound

How many atoms of hydrogen are in 2.50g of water

Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. the ending substances did not look the same as the starting substances.

As carbon dioxide sublimes, its entropy (1) decreases (2) increases (3) remains the same

HCl is a strong acid. The degree of ionization of HCl is solution is closest to: 1.) 25% 2.) 50% 3.) 75% 4.) 100%

How much heat is absorbed/released when 20.00 g of NH3 (g) (17.0307g/mol) react in the presence of excess O2 (g) to produce NO (g) and H2O (l) according to the following chemical equation? 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O (l) ΔH° = 1168 kJ

How many feet is 5642cm

A (n) bond forms when one atom gives up one or more electrons to another atom.

How many neutrons are in silver

C6h6is an example of an

Given the reaction: Mg (s) + 2 AgNO3 (aq) - - > Mg (NO3) 2 (aq) + 2 Ag (s) Which type of reaction is represented? (1) single replacement (3) synthesis (2) double replacement (4) decomposition