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lys-0071 [83]
2 years ago
15

Which of the following best defines average speed?

Chemistry
2 answers:
drek231 [11]2 years ago
8 0

Answer:

D

Explanation:

mr_godi [17]2 years ago
7 0

Answer:

It is the total distance traveled over the total time .

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COLD

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A chemist prepares a solution of potassium dichromate by measuring out of potassium dichromate into a volumetric flask and filli
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Answer:

0.297 mol/L

Explanation:

<em>A chemist prepares a solution of potassium dichromate by measuring out 13.1 g of potassium dichromate into a 150 mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium dichromate solution. Be sure your answer has the correct number of significant digits.</em>

<em />

Step 1: Calculate the moles corresponding to 13.1 g of potassium dichromate

The molar mass of potassium dichromate is 294.19 g/mol.

13.1 g × (1 mol/294.19 g) = 0.0445 mol

Step 2: Convert the volume of solution to L

We will use the relationship 1 L = 1000 mL.

150 mL × (1 L/1000 mL) = 0.150 L

Step 3: Calculate the concentration of the solution in mol/L

C = 0.0445 mol/0.150 L = 0.297 mol/L

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What hydrocarbons burn completely in an excess of oxygen, the products are
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The right answer for the question that is being asked and shown above is that: "C) carbon monoxide and carbon dioxide" hydrocarbons burn completely in an excess of oxygen, the products are <span>C) carbon monoxide and carbon dioxide</span>
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Which two types of weather are most likely to occur when you see clouds Like these?
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