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jarptica [38.1K]
3 years ago
6

Butyric acid has a density of 0.959 g/mL at 20∘C. How many moles of butyric acid are contained in 1.56 mL of butyric acid?

Chemistry
1 answer:
lara [203]3 years ago
7 0

Answer:

We have 0.0170 moles of butyric acid

Explanation:

Step 1: Data given

Density of butyric acid = 0.959 g/mL

Temperature = 20.0°C

Volume = 1.56 mL = 0.00156 L

Step 2: Calculate mass

Density = mass / volume

mass = density * volume

Mass = 0.959 g/mL * 1.56 mL

Mass = 1.496 grams

Step 3: Calculate Number of moles

Number of moles = mass / molar mass

Number of moles = 1.496 grams / 88.11 g/mol

Number of moles = 0.0170 moles

We have 0.0170 moles of butyric acid

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Vera_Pavlovna [14]
Hello!
We have the following data:

m (mass) = ? 
n (number of moles) = 5.20 moles
MM (Molar mass of C6H12) 
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--------------------------
MM (Molar mass of C6H12) = 72 + 12 = 84 g/mol

Now, let's find the mass, knowing that:

n =  \dfrac{m}{MM}

5.20\:\:\diagup\!\!\!\!\!\!\!mol =  \dfrac{m}{84\:g/\diagup\!\!\!\!\!\!\!mol}

m = 5.20*84

\boxed{\boxed{m = 436.8\:g}}\end{array}}\qquad\checkmark


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Explanation:

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Answer:

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Explanation:

Given data:

Flour required for 18 cup cakes = 260 g

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Solution:

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