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alex41 [277]
3 years ago
6

Marquis wrote the linear regression equation y=1.245*-3.684

Mathematics
2 answers:
Advocard [28]3 years ago
5 0
I would say 35 because if you put in 35 for x you get 39.891
jasenka [17]3 years ago
5 0

35 because if you put it in the x value you get 39.891

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-2(4h+6)/-6+h for h=-5
satela [25.4K]

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6 0
2 years ago
Type the correct answer in the box. express your answer to two significant figures. a reaction between 1.7 moles of zinc iodide
irga5000 [103]

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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7 0
2 years ago
The measure of an angle is 34 degrees. What is the measure of the supplementary angle.
prohojiy [21]

Answer:

<em>146</em>

Step-by-step explanation:

Supllementary angles add up to 180 degrees.

<em>180-34 = 146</em>

7 0
3 years ago
What is 348,000,000,000,000 estimated as the product of a single digit and a power of 10?
levacccp [35]
The answer should be 3.48 X 10^18
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3 years ago
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