Use the following information to answer questions 3.2, 3.3, and 3.4.Calcium phosphide (Ca3P2) and water react to form calciumhydroxide and phosphine (PH3). In a particular experiment,225.0 g Ca3P2 and 125.0 g water are combined.Ca3P2(s) + H2O(l) Ca(OH)2(aq) + PH3(g)(Don’t forget to balance the equation.) 3.2How much PH3 can be produced?(a) 350.0 g (b) 235.0 g (c) 78.59 g (d) 83.96 g (e) 41.98 g3.3How much Ca(OH)2 can be produced?(a) 91.51 g (b) 274.5 g (c) 513.8 g (d) 85.63 g (e) 257.0 g3.4How much of the excess reactant remains when the reaction iscomplete?(a) 14.37 g (b) 235.0 g (c) 78.56 g (d) 83.96 g (e) 41.98 g
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.
Use the following information to answer questions 3.2, 3.3, and 3.4.
Calcium phosphide (Ca3P2) and water react to form calcium
hydroxide and phosphine (PH3). In a particular experiment,
225.0 g Ca3P2 and 125.0 g water are combined.
Ca3P2(s) + H2O(l) Ca(OH)2(aq) + PH3(g)
(Don’t forget to balance the equation.)
3.2
How much PH3 can be produced?
(a) 350.0 g (b) 235.0 g (c) 78.59 g (d) 83.96 g (e) 41.98 g
3.3
How much Ca(OH)2 can be produced?
(a) 91.51 g (b) 274.5 g (c) 513.8 g (d) 85.63 g (e) 257.0 g
3.4
How much of the excess reactant remains when the reaction is
complete?
(a) 14.37 g (b) 235.0 g (c) 78.56 g (d) 83.96 g (e) 41.98 g
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