Is calcium hydroxide an acid or an alkali?

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?