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geniusboy [140]
3 years ago
7

You have 100 grams of rubidium bromide (RbBr). How many moles do you have?

Chemistry
2 answers:
Ainat [17]3 years ago
8 0

<u>Answer:</u> The moles of rubidium bromide for the given amount is 0.61 moles

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

We are given:

Given mass of RbBr = 100 g

Molar mass of RbBr = 165.37 g/mol

Putting values in above equation, we get:

\text{Moles of RbBr}=\frac{100g}{165.37g/mol}=0.61mol

Hence, the moles of rubidium bromide for the given amount is 0.61 moles

Margarita [4]3 years ago
6 0

Answer:

a) 0.61 mol

Explanation:

165.3718 g Rubidium Bromide = 1 mol

100 g  Rubidium Bromide =  1/165.3718  x   100

                                          =  0.61 mol

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General Chemistry fourth edition by McQuarrie, Rock, and Gallogly. University Science Books presented by Macmillan Learning.
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Explanation:

Step 1: Calculate the heat absorbed by the calorimeter

We will use the following expression.

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According to the law of conservation of energy, the heat released by the candy has the same magnitude as the heat absorbed by the calorimeter.

Step 2: Convert 86.1 kJ to Cal

We will use the conversion factor 1 Cal = 4.186 kJ.

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