Part A Total U.S. farmland occupies 954 million acres. How many square miles is this? (Note that 1 acre = 43,560 ft² and 1 mile = 5280 ft.) Express your answer in square miles to three significant figures. ? A = mi? Part B Total U.S. land area is 3.537 million square miles. What percentage of U.S. land is farmland ? Express your answer in percent to three significant figures. ? %
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
Please answer question 18 parts A and B
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