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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Low-growing bumald spirea (S. bumalda) and medium-sized Japanese spirea (S. japonica) can be used throughout the landscape. Vanhoutte spirea (S. vanhouttei), the classic bridal wreath spirea, grows up to 10 feet tall and 20 feet wide, so give it plenty of elbow room. Masses of small, white flower clusters cover the plant in the spring.