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Dovator [93]
3 years ago
5

What is the molarity of a solution prepared by dissolving 0.217 mol of ethanol, C2H5OH, in enough water to make 100.0 mL of solu

tion
Chemistry
1 answer:
sergeinik [125]3 years ago
8 0

Answer: 2.17mol/L

Explanation:

C=n/V

n: 0.217mol

V: 100.0mL

1. Convert mL to L (100.0mL/1000 = 0.01L)

2. Put numbers into equation (C= 0.217/0.01L)

3. Molarity is 2.17mol/L

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Slicing an average loaf of bread gives 13 medium thickness slices. Each slice of bread is to be coated with 0.0500 oz of mayonna
AlexFokin [52]

Answer:

36 loaves of bread and 18.48 ounces of mayonnaise are needed to make all of the sandwiches.

Explanation:

Number of slices of ham = 231

Given that each sandwich has 1 slice of ham.

Then 231 slices of ham will be in :

1\times 231 =231 sandwiches

A single sandwich is made up of 2 bread slices , Then bread slices in 231 sandwiches will be :

231\times 2=462

Each bread slice is applied with 0.0500 ounce of mayonnaise.

Then 462 bread slices will have :

462\times 0.0500 ounces=18.48 Oz

1 bread loaf = 13 bread slices

Then breads loves in 462  bread slices :

\frac{462}{13}=35.54\approx 36

36 loaves of bread and 18.48 ounces of mayonnaise are needed to make all of the sandwiches.

8 0
3 years ago
Which of the following equations has correct formulas and also is a balanced equation?
aliya0001 [1]

Answer : The correct option is, (B)

Explanation :

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2Be+O_2\rightarrow 2BeO

while the other options has incorrect formulas and also an unbalanced equations.

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The correct equation for option C is, 2Mg+O_2\rightarrow 2MgO

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Hence, the correct answer is, (B) 2Be+O_2\rightarrow 2BeO

5 0
3 years ago
The equation K2O represents the ionic bond between potassium and oxygen. What is the name of the compound?
eduard
Ten name if this compound is Potassium Oxide 
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Answer:

I want to say option C: Testing which surfa e is easier to slide a wooden block across.

Explanation:

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2 years ago
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