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son4ous [18]
3 years ago
13

Nsity VVS

Chemistry
1 answer:
Kazeer [188]3 years ago
8 0

Answer:

<h2>The answer is 1.99 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass of acid = 60.19 g

volume = 30.2 mL

The density is

density =  \frac{60.19}{30.2}  \\  = 1.993046357...

We have the final answer as

<h3>1.99 g/mL</h3>

Hope this helps you

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How many moles of hydrogen are in the sample?<br> Round your answer to 4 significant digits.
finlep [7]

Answer:

1.56 mol H₂

Explanation:

Mg₃(Si₂O₅)₂(OH)₂

<em>There are 4 Si moles per Mg₃(Si₂O₅)₂(OH)₂ mol</em>. With that in mind we can <u>calculate how many Mg₃(Si₂O₅)₂(OH)₂ moles are there in the sample</u>, using the <em>given number of silicon moles</em>:

  • 3.120 mol Si * \frac{1molMg_3(Si_2O_5)_2(OH)_2}{4molSi} = 0.78 mol Mg₃(Si₂O₅)₂(OH)₂

Then we can <u>convert Mg₃(Si₂O₅)₂(OH)₂ moles into hydrogen moles</u>, keeping in mind that <em>there are 2 hydrogen moles per Mg₃(Si₂O₅)₂(OH)₂ mol</em>:

  • 0.78 mol Mg₃(Si₂O₅)₂(OH)₂ * 2 = 1.56 mol H₂
8 0
3 years ago
During the reaction of 2,4-dinitrofluorobenzene with methoxide in methanol it was observed that it occurs at a significantly hig
Pachacha [2.7K]

Answer:

Explanation:

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3 0
3 years ago
Explain the process of fermentation.
tia_tia [17]

Answer:

Fermentation, chemical process by which molecules such as glucose are broken down anaerobically. More broadly, fermentation is the foaming that occurs during the manufacture of wine and beer, a process at least 10,000 years old. The frothing results from the evolution of carbon dioxide gas, though this was not recognized until the 17th century.

Explanation:

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4 0
3 years ago
Read 2 more answers
Most of the sulfur used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas well
Harlamova29_29 [7]

Answer: Rate of production of Sulfur dioxide is 0.15kg/s to 2 significant digits

Note: The question is incomplete. The complete question is as follows:

<em>Most of the used in the United States is chemically synthesized from hydrogen sulfide gas recovered from natural gas wells. In the first step of this synthesis, called the Claus process, hydrogen sulfide gas is reacted with dioxygen gas to produce gaseous sulfur dioxide and water Suppose a chemical engineer studying a new catalyst for the Claus reaction finds that 198. liters per second of dioxygen are consumed when the reaction is run at 186. °C and 0.69 atm. Calculate the rate at which sulfur dioxide is being produced. Give your answer in kilograms per second. Round your answer to 2 significant digits.</em>

Explanation:

The balanced equation of the reaction between hydrogen sulfide gas and dioxygen gas to produce sulfur dioxide and water is as follows:

2H₂S(g) + 3O₂(g) ---> 2SO₂(g) + 2H₂O(g)

<em>From the equation above, 3 moles of dioxide yields 2 moles of sulfur dioxide.</em>

Using the ideal gas equation to determine the number of moles of dioxygen present in 198 litres of the gas at 186. °C and 0.69 atm;

PV = nRT,

where P = 0.69atm, V = 198Litres, R (molar gas constant) = 0.082atmLK⁻¹mol⁻¹, T = 186. °C = 459K

<em>n = PV/RT</em>

n = 0.69*198*/(0.082*459)

n =  3.63moles of dioxygen

Therefore, 3.63 moles of dioxygen are consumed per second

Using the mole ratio from the equation of reaction,

<em>number of moles of sulfur dioxide produced will be 3.63moles * 2/3 = 2.42moles</em>

Therefore, the number of moles of sulfur dioxide consumed is 2.42 moles per second.

Converting to kilograms per second,

1 mole of sulfur dioxide weighs 64g (molar mass of sulfur dioxide)

<em>2.42 moles weighs 2.42*64g =154.88g or 0.15488Kg which is approximately 0.15Kg</em>

Therefore, rate of production of Sulfur dioxide is 0.15kg/s to 2 significant digits

8 0
3 years ago
This from ionic compounds escape room​
stira [4]

Answer:

Fe2O3 - S

PbO2 - D

PbO - I

Fe2O - U

Fe(OH)3 - H

FeO2 - T

FeO - R

Pb2O - G

Pb(OH)2 - O

FeOH - N

Pb(OH)3 - A

Explanation:

In writing the formula of ionic compounds we consider the valency or oxidation state of each ion.

For instance, given the compound iron II oxide. The oxidation states of both iron and oxygen are +2 and -2 respectively. Ignoring the charges, this cancels out and we have FeO as the correct formula of the compound.

For Iron III oxide, the oxidation states of iron and oxygen are +3 and -2 respectively, the both atoms exchange charges. If we ignore the signs and write the exchanged numbers as subscripts we obtain the formula Fe2O3.

4 0
3 years ago
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