3.161 Potash is any potassium mineral that is used for itspotassium content. Most of the potash produced in theUnited States goes into fertilizer. The major sources ofpotash are potassium chloride (KCl) and potassium sulfate(K2SO4). Potash production is often reported as thepotassium oxide (K2O) equivalent or the amount of K2Othat could be made from a given mineral. (a) If KCl costs$0.55 per kg, for what price (dollar per kg) must K2SO4be sold to supply the same amount of potassium on aper dollar basis? (b) What mass (in kg) of K2O containsthe same number of moles of K atoms as 1.00 kg of KCl?
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.
3.161 Potash is any potassium mineral that is used for its
potassium content. Most of the potash produced in the
United States goes into fertilizer. The major sources of
potash are potassium chloride (KCl) and potassium sulfate
(K2SO4). Potash production is often reported as the
potassium oxide (K2O) equivalent or the amount of K2O
that could be made from a given mineral. (a) If KCl costs
$0.55 per kg, for what price (dollar per kg) must K2SO4
be sold to supply the same amount of potassium on a
per dollar basis? (b) What mass (in kg) of K2O contains
the same number of moles of K atoms as 1.00 kg of KCl?
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