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Butoxors [25]
3 years ago
12

2 points

Chemistry
1 answer:
dsp733 years ago
8 0

The percent error of Denzel's measurement : 5.75%

<h3>Further explanation</h3>

Given

32.75 g measurement

Required

The percent error

Solution

% Error : difference between the theoretical value and the actual value

% Error for Denzel measurement :

1. Subtract the measurement value with the accepted value

= 32.75 g - 30.97 g

= 1.78 g

2. Divide by the accepted value, and multiply by 100

= (1.78/30.97) x 100%

= 5.75%

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2210.20 J of energy is equal to how many calories?​
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Answer:

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Explanation:

From the question given above, the following data were obtained:

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5 0
3 years ago
A compound consists of 75% magnesium and 25% oxygen. Find the empirical formula.
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<h2>Answer:</h2>

% Composition of elements:

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Now, divide % composition by Atomic mass:

\footnotesize\implies Mg = \dfrac{\% \:  Composition}{Atomic  \: mass} =  \dfrac{75}{24}  =  \bf 3.125

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Simplest Ratio:

\footnotesize\implies Mg  =  \dfrac{3.125}{1.5625}  = 2

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Empirical Formula:

\footnotesize\implies \underline{ \boxed{ \red{ \bf Empirical \:  Formula = Mg_2O}}}

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