A solution of known molarity is called a standard solution. Its concentration is determined by a process known as standardization. solution of known molarity is called a standard solution. Its concentration is determined by a process known as standardization.
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Recessed lighting is commonly featured in this ceiling style. Tray ceilings are often seen in kitchens and dining rooms. Because of the two levels of ceiling height, tray ceilings can make a small room look taller.