Valence electrons are: O a. Electrons that have been lost in an atom O b. Electrons in the nucleus of an atom O c. electrons in the outer-most shell of an atom O d. electrons in the inner-most shell of an atom

The mole concept will most likely be used in calculating the average height of a mountain range. measuring how many liters of gasoline are poured into a tank. determining how many ozone molecules are lost in the atmosphere.

Which element has a larger ionic radius sulfur (S) ? A. Oxygen B. Fluorine (F) C. Chlorine (Cl) D. Phosphorus (P)

Determine the mass of KNO3 that dissolves in 100 grams of water at 40°C to produce a saturated solution

Chlorine has 17 valence electrons. true or false?

Most reactions between an acid and a base form a salt and water. Which describes an acid-base reaction? A. synthesis B. decomposition C. double-replacement reaction D. single-replacement reaction

Identify the characteristics of tornadoes and hurricanes

When magma intrudes parallel to another rock layer, the formation is called a (n) A. sill. B. dike. C. extrusion. D. unconformity.

What is the net amount of energy released when 1 mole of H2O is produced

Why is Sn (SO4) 2 named Tin (IV) Sulfate and not Tin (II) Sulfate?

An element x forms an iodide (xi3) and a chloride (xcl3). the iodide is quantitatively converted to the chloride when it is heated in a stream of chlorine: 2xi3+3cl2â2xcl3+3i2 if 0.5500 g of xi3 is treated, 0.2596 g of xcl3 is obtained.