Given the following equation: 2 Ca + O2 --> 2 CaO How many moles CaO produced from 4 moles O2?

8 moles of CaO produced from 4 moles O2.

Explanation:

Balanced chemical equation for the reaction:

2 Ca + O2 --> 2 CaO

Data given:

moles of O2 = 4

Moles of CaO =?

From the reaction it is seen that 1 mole of O2 is used in the reaction to produce 2 moles of CaO

hence, 4 moles of O2 will give x moles of CaO

=

x =8

So, 8 moles of CaO will be produced when 4 moles of O2 will be used in the reaction. Since oxygen is the limiting reagent in the reaction.

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.

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explanation:

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