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slega [8]
3 years ago
15

Glycerol is a syrupy liquid often used in cosmetics and soaps. A 3.25-L sample of pure glycerol has a mass of 4.10 x 10 g.

Chemistry
1 answer:
Pavel [41]3 years ago
8 0

Explanation:

It is known that density is the amount of mass present in liter of solution or substance.

Mathematically,      Density = \frac{mass}{volume}

It is given that volume is 3.25 L and mass is 4.10 \times 10^{3} g. Hence, calculate the density of glycerol as follows.

                     Density = \frac{mass}{volume}

                                   = \frac{4.10 \times 10^{3} g}{3.25 L}

                                    = 1.26 \times 10^{3} g/L

As, 1 L = 1000 cm^{3}.

So,           1.26 \times 10^{3} g/L \times \frac{1000 cm^{3}}{1 L}

                 = 1260 \times 10^{6} g/cm^{3}    

Thus, we can conclude that the density of glycerol is 1260 \times 10^{6} g/cm^{3}.

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What they have in common is that they both have the same number of atoms. Hope this helps. :)
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3 years ago
A sound wave is traveling at 331 m/s and has a frequency of 126 Hz. What is the wavelength?​
damaskus [11]
<h2>Answer</h2>

2.626984127 m

<h2>Explanation:</h2><h2></h2>

You have to know the equation that relates wavelength, frequency, and velocity (it's like speed but a bit different).

v = f x λ

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v = velocity

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Rearrange to make λ subject:

λ = v / f

We've been given 331 as the speed, 126 as the frequency. Sub it into the equation:

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2 years ago
Which has a higher boiling point hcl or hi
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How many grams hydrogen in 4.5 mol H2SO4
swat32
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Hence n H+ = 9 mols

Mass of H = nM = (9*1) = 9g


Alternately

mass of H2SO4= nM= 4.5*98= 441

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4 0
3 years ago
To completely convert 9. 0 moles of hydrogen gas (h2) to ammonia gas, how many moles of nitrogen gas (n2) are required?
evablogger [386]

To completely convert 9. 0 moles of hydrogen gas (h2) to ammonia gas, 3.0 moles of nitrogen gas (n2) are required.

<h3>What are moles?</h3>

The mole is a SI unit of measurement that is used to calculate the quantity of any substance.

<h3 />

The given reaction is \rm  N_2(g) + 3H_2(g) \rightarrow 2NH_3(g)

By the stoichiometry rule of ratio hydrogen: nitrogen

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The reacted moles of nitrogen is equals to H/3 moles of reacted hydrogen

So, moles of nitrogen  

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Thus, 3.0 moles of nitrogen gas (n2) are required.

Learn more about moles

brainly.com/question/26416088

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3 0
2 years ago
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