A 14-karat gold ring contains other metals that make it stronger than pure gold. What is this type of matter called? A. a colloidal mixture B. an elemental particle C. a homogeneous mixture D. a heterogeneous substance

Sometimes when extraction a polar organic solute into anorganic solvent, brine (a saturated solution of sodium chloride) isused in place of water. What is the advantage of using brinerather than water?

Which statement best describes the pH of pure water? It is neutral because the concentration of hydronium ions equals that of hydroxide ions. It is neutral because the pure liquid contains neither hydronium ions nor hydroxide ions.

An instrument used to separate cell parts according to density is the

How many liters of octane are in a shipping container that contains 45 moles? A. 45 liters B. 450 moles C. 2 moles D. 1,008 liters

An ecosystem can be all populations of consumers eating each other for food true or false?

What is the Celsius equivalent of 212°f

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?