The answer Is C.the layer of rock they're found in
<span>plagioclase feldspars have striations and potassium feldspars don't have striations</span>
Answer: 0.0508mL
Explanation: Using the basic formula that states: C acid * V acid = C base * V base. we have:0.568 * 17.88 = 20 * C base.
therefore concentration of the base is 1.0156/20 = 0.0508 mL
