The answer is (3x + 5) ^2
The percent yield of zinc carbonate is 5.91%.
<h3>What is chemical reaction?</h3>
The chemical reaction is the reaction between two reactants which led to the formation of products.
The products are substances which forms after reaction. The reactants are the substances which are original materials.
Given is a reaction between 1.7 moles of zinc iodide and excess sodium carbonate yields 12.6 grams of zinc carbonate.
The given balanced equation is: Na₂CO₃ + ZnI₂ → 2NaI + ZnCO₃
From given moles of zinc iodide, the moles of zinc carbonate
1.7 moles of ZnI₂ = 1.7 moles of ZnCO₃
Molar mass of zinc carbonate is 125.38 g/mol
Theoretical yield = 1.7 moles of ZnCO₃ x 125.38 g/mol = 213.15 g ZnCO₃
Theoretical yield is 213.15 g and the actual yield is given as 12.6 g.
percent yield = [ 12.6 g / 213.15 g ZnCO₃ ] x 100
percent yield = 5.91%
The percent yield of zinc carbonate is 5.91%.
Learn more about chemical reaction.
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Answer:
4
Step-by-step explanation:
Answer:
4/185 or 0.0216...
Step-by-step explanation:
An ordered pair such as (3,-1), is a shorthand way of writing two variables, such as x = 3 and y = -1. The order of the numbers in the pair is important: x always comes before y.
An ordered pair is a composition of the x coordinate (abscissa) and the y coordinate (ordinate), having two values written in a fixed order within parentheses.
It helps to locate a point on the Cartesian plane for better visual comprehension.
The numeric values in an ordered pair can be integers or fractions.
Ordered Pair = (x,y)
Where, x = abscissa, the distance measure of a point from the primary axis “x”
And, y = ordinate, the distance measure of a point from the secondary axis “y”
In the Cartesian plane, we define a two-dimensional space with two perpendicular reference lines, namely x-axis and y-axis. The point where the two lines meet at “0” is the origin.
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