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alexdok [17]
3 years ago
10

Bob measured out 1.60 grams of sodium. He calculates that 1.60 g of

Chemistry
1 answer:
saul85 [17]3 years ago
6 0

Answer:

84.8%

Explanation:

Step 1: Given data

Bob measured out 1.60 g of Na. He forms NaCl according to the following equation.

Na + 1/2 Cl₂ ⇒ NaCl

According to this equation, he calculates that 1.60 g of sodium should produce 4.07 g of NaCl, which is the theoretical yield. However, he carries out the experiment and only makes 3.45 g of NaCl, which is the real yield.

Step 2: Calculate the percent yield.

We will use the following expression.

%yield = real yield / theoretical yield × 100%

%yield = 3.45 g / 4.07 g × 100% = 84.8%

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3 years ago
The student plans to conduct a spectrophotometric analysis to determine the concentration of Cu2+(aq) in a solution. The solutio
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Answer:

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Explanation:

Attached below you can find the diagram I found for this question elsewhere.

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2 years ago
A perfect cube of aluminum metal was found to weigh 20.00 g. The density of aluminum is 2.7 g/ml. What are the dimensions of the
denis23 [38]

Answer:

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             Width =  1.9493 cm

             Depth  =  1.9493 cm

Solution:

Data Given:

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Step 1: Calculate the Volume,

As,

                                        Density  =  Mass ÷ Volume

Or,

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Putting values,

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Step 2: Calculate Dimensions of the Cube:

As we know,

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So, we will take the cube root of 7.407 cm³ which is 1.9493 cm.

Hence,

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