Answer:
0.068 liters of Oxygen gas would be required to produce 32.0 g of Fe2O3.Explanation:
To calculate the volume of Oxygen gas that would be required to produce a given amount of Fe2O3, we need to use the balanced chemical equation for the corrosion (rusting) of iron. The equation is:
3 O2 (g) + 4 Fe (s) —> 2 Fe,O3 (s)
This equation tells us that for every 3 molecules of Oxygen gas that react with 4 molecules of Iron, 2 molecules of Iron (III) oxide (Fe2O3) are produced. Since the atomic weight of Oxygen is 16.0 g/mol and the atomic weight of Iron is 56.0 g/mol, the molar ratio of Oxygen to Iron in the equation is 3/16 = 0.1875.
We can use this molar ratio to calculate the volume of Oxygen gas that would be required to produce a given amount of Fe2O3. To do this, we first need to convert the mass of Fe2O3 to moles. Since the atomic weight of Fe2O3 is 159.7 g/mol, 32.0 g of Fe2O3 is equivalent to 32.0 / 159.7 = 0.201 moles of Fe2O3.
We can then use the molar ratio of Oxygen to Iron to calculate the number of moles of Oxygen gas that would be required to produce 0.201 moles of Fe2O3. Since the molar ratio of Oxygen to Iron is 0.1875, 0.201 moles of Fe2O3 would require 0.201 * 0.1875 = 0.0376 moles of Oxygen gas.
Finally, we can use the molar volume of a gas at standard temperature and pressure (STP) to convert the number of moles of Oxygen gas to volume. At STP, one mole of a gas occupies a volume of 22.4 liters, so 0.0376 moles of Oxygen gas would occupy a volume of 0.0376 * 22.4 = 0
Geh lang
How many oxygen atoms are in 3.30 g of quartz?
Answer:
3.30 gSiO2 / 60.085g SiO2 x 2 mol 0 / 1 mol SiO2 x (6.022*1023 ) = 6.61*1022 O atoms
Explanation:
Chemistry, 50 points!!! Will also mark brainliest if you answer everything
Answer:
1. 2Al + Cl2 = Al2Cl2
2 TiCl4 + 2Na = Ti + 2NaCl2
3. H2O2 = H2O + O2
4. Na2S + 2HCl = H2S + 2NaCl
5. Mg(OH)2 + 2HCl = MgCl2 + 2H2O
1. 3O2 = 2O3
Which letter indicates the most sudden change in temperature
Answer:
J 9. , indicates the most sudden change in temperature
Question 2/8
From left to right across the second period of the periodic table,
Answer:
HE
Explanation:
HE is a noble gas
_____________refers to the soil that is frozen solid all year round, and does not even melt in the summer.
Use this website to answer the question: https://thewildclassroom.com/biomes/artictundra-2/
Question 5 options:
verglas
glaze
permafrost
frost
Answer:
Permafrost is any part of the ground that remains completely frozen or colder
Of an 8 M solution of HCI, 1 L is diluted to 2 M. What is the volume of the diluted
solution?
Answer: The volume of diluted solution is 4 L
Explanation:
According to the dilution law,
[tex]M_1V_1=M_2V_2[/tex]
where,
[tex]M_1[/tex] = molarity of stock [tex]HCl[/tex] solution = 8 M
[tex]V_1[/tex] = volume of stock [tex]HCl[/tex] solution = 1 L
[tex]M_1[/tex] = molarity of diluted [tex]HCl[/tex] solution = 2 M
[tex]V_1[/tex] = volume of diluted [tex]HCl[/tex] solution = ?
Putting in the values we get:
[tex]8M\times 1L=2M\times V_2[/tex]
[tex]V_2=4L[/tex]
Therefore, volume of diluted solution is 4 L
A water treatment tablet contains 20.0 mg of tetraglycine hydroperiodide, 40.0% of which is available as soluble iodine. If two tablets are used to treat 1.00 liter of drinking water, what is the concentration in ppm of iodine in the treated water
Answer:
[tex]16\ \text{ppm}[/tex]
Explanation:
Mass of one tablet = 20 mg
Mass of two tablets = [tex]2\times 20=40\ \text{mg}[/tex]
Percent that is soluble in water = 40%
Mass of tablet that is soluble in water = [tex]0.4\times 40=16\ \text{mg}[/tex]
So, mass of solute is [tex]16\ \text{mg}[/tex]
Density of water = 1 kg/L
Volume of water = 1 L
So, mass of 1 L of water is [tex]1\times 1=1\ \text{kg}=1000\ \text{g}[/tex]
PPM is given by
[tex]\dfrac{\text{Mass of solute}}{\text{Mass of solvent}}\times 10^6=\dfrac{16\times 10^{-3}}{1000}\times 10^6\\ =16\ \text{ppm}[/tex]
Hence, the concentration of iodine in the treated water [tex]16\ \text{ppm}[/tex].
What is the final molarity of a solution when 250 mL H2O is added to 150 mL
0,040 M NaOH(aq)?
Answer:
0.015M is the final molarity of the NaOH solution
Explanation:
A solution of 0.040M NaOH is diluted from 150mL to 250mL + 150mL = 400mL. That means the solution is diluted:
400mL / 150mL = 2.667 times.
As the original solution has a concentration of 0.040M, the diluted solution has a concentration of:
0.040M / 2.667 =
0.015M is the final molarity of the NaOH solutionWhat is matter?
O A. Anything that can be seen.
O B. Anything that can be treasured
O C. Anything that takes up space and has mass
B. Anything that has
energy and motion
Answer:
Anything that takes up space and has mass
PLZZZZZZZ HELPPPP MEEEE ASAP CHEMISTRY QUESTION DOWN BELOW How can you identify a reversible reaction from a chemical equation?
Question 2 options:
The chemical equation will be balanced.
The chemical equation will have two arrows pointing in different directions.
The chemical equation will have reactants and products
The chemical equation will state that it is reversible.
it's the third one The chemical equation will have two arrows pointing in different directions. !
Answer:
the answer is option 1 2H2+O2
Label the marrow, spongy bone, and cortical bone on this bone image.
Explanation:
this is the correct answer
just down of compact bone there is spongy bone
mark me
What are the products of the balanced equation for the combustion of C8H17OH ?
A. 2C4H8(g)+H2O(l)
B. C8H17(s)+NaOH(aq)
C. 8CO2(g)+9H2O(l)
D. 8O2(g)+9H2O(l)
What is the independent variable in this experiment? (Look at the photo)
Answer:
A) Temperature
Explanation:
The independent variable is the variable that the researcher changes. In this case, that's the temperature because there is hot, warm, and cold.
The food dye is the constant.
The water and time it takes for dye to mix are the dependent variable since they depend on the independent variable (the temperature)
250 mL of 1.5 M nitric acid is mixed with 250 mL of 2.5 M sodium hydroxide. Calculate the pH of the resulting mixture.
Answer:
pH = 13.7.
Explanation:
Hello there!
In this case, as we set up the chemical reaction between nitric acid and sodium hydroxide:
[tex]NaOH+HNO_3\rightarrow NaNO_3+H_2O[/tex]
It is possible to realize there is a 1:1 mole ratio of acid to base, thus, we next compute the moles of each one:
[tex]n_{acid}=0.25L*1.5mol/L=0.375mol\\\\n_{base}=0.25L*2.5mol/L=0.625mol[/tex]
In such a way, since the base react with more moles, there is leftover that we compute as shown below:
[tex]n_{base}^{leftover}=0.25mol[/tex]
Afterwards, we compute the concentration given the new volume of 500 mL (0.500 L), as both volumes are added up:
[tex][base]=0.25mol/0.500L=0.5M[/tex]
Now, since sodium hydroxide is such a strong base, we compute the pOH first:
[tex][OH^-]=[base]=0.5M[/tex]
[tex]pOH=-log([OH^-])=-log(0.5M)\\\\pOH=0.30[/tex]
And the pH:
[tex]pH=14-0.30\\\\pH=13.7[/tex]
Best regards!
Help I do not understand.
Answer:
158.5g Zn are produced
Explanation:
To solve this question we have to find the moles of Aluminium. With the moles of Aluminium and the balanced reaction we can find the moles of Zn and its mass as follows:
Moles Al -Molar mass: 26.98g/mol
43.6g Al* (1mol/26.98g) = 1.616 moles Al
Moles Zn:
1.616 moles Al * (3mol Zn / 2mol Al) =
2.424 moles Zn are produced
Mass Zn -Molar mass: 65.38g/mol-
2.424 moles Zn * (65.38g / mol) =
158.5g Zn are producedHELPPPP PLZZZZ
“Our world is like a web made up of many strands, all connected together. Break one connection, and the whole web may change.”
What might the author be trying to communicate about biodiversity in these sentences
Answer:
hope yall have agreat day
Explanation
report speech in grammar
Explanation:
I don't understand the question
Answer:
Reported speech is often called indirect speech. Reported speech is the speech in which someone says that someone told something.
For example:
1. The English teacher said that she would take our test on Monday.
2. Mr. James said that he was not feeling well due to dry weather.
Did you observe the tense of the reported speech? It is in past form. In reported speech always use past tense.
Use the following information to calculate the solubility product constant, Ksp, for CuCl. A saturated solution of CuCl in water was prepared and filtered. From the filtrate, 1.0 L was measured out into a beaker and evaporated to dryness. The solid CuCl residue recovered in the beaker was found to weigh 0.041g.
A. Ksp =1.7 × 10¯9
B. Ksp = 1.7 × 10¯7
C. Ksp = 1.7 × 10¯5
D. Ksp = 4.3 × 10¯4
E. Ksp = 2.1 × 10¯2
Answer:
B. Ksp = 1.7 × 10¯⁷
Explanation:
Hello there!
In this case, for this solubility equilibrium problem, we first need to set up the chemical reaction describing the dissolution of the involved salt, CuCl:
[tex]CuCl(s)\rightleftharpoons Cu^+(aq)+Cl^-(aq)[/tex]
Next, we write the corresponding equilibrium expression:
[tex]Ksp=[Cu^+][Cl^-][/tex]
Now, we need to calculate the concentrations of copper (I) and chloride ions at equilibrium; thus, given that 0.041 g of this solid is completely dissolved in 1.0 L of solution, we can firstly calculate the moles present in the solution:
[tex]n_{CuCl}=0.041gCuCl*\frac{1molCuCl}{99gCuCl} =4.14x10^-4mol[/tex]
Afterwards, since all the species in the reaction, CuCl, Cu+ and Cl- are in a 1:1:1 mole ratio, we realize that those moles correspond to ions in the solution, so their concentrations are:
[tex][Cu^+]=[Cl^-]=\frac{4.14x10^{-4}mol}{1.0L}= 4.14x10^{-4}M[/tex]
Then, we compute the Ksp by plug this value in the equilibrium expression:
[tex]Ksp=(4.14x10^{-4})(4.14x10^{-4})=1.7x10^{-7}[/tex]
Thus, the answer would be B. Ksp = 1.7 × 10¯⁷.
Regards!
Lemon and Orange contains Limonene. What difference they have from the angle of
stereo chemistry? Describe by drawing their structures?
Most synesthetes are:
a.
women
b. men
C. children
d. artists
Please select the best answer from the choices provided
Ο Α
B.
С
D
Answer:
d
Explanation:
its artist school kills artists
Answer:
Hello There!!
Explanation:
The answer is D.artists because they trigger colors.
hope this helps,have a great day!!
~Pinky~
Nitrogen monoxide and hydrogen react to form nitrogen and water, like this: 2NO(g) 2H2(g) N2(g) 2H2O(g)Also, a chemist finds that at a certain temperature the equilibrium mixture of nitrogen monoxide, hydrogen, nitrogen, and water has the following composition:compoundpressure at equilibriumCalculate the value of the equilibrium constant Kp for this reaction. Round your answer to significant digits.
Answer:
hello your question is poorly written attached below is the complete question
answer : Kp = 4.75 * 10^-3
Explanation:
Kp = (76.4 * ( 50.3 )^2 )/ ((79.1)^2 * (80.6)^2 )
= 193298.876 / 40646490.2116
= 0.00475 ≈ 4.75 * 10^-3
attached below is the beginning part of the solution
______ is the movement of sediment from one place to another
Answer:
ErosionExplanation:
Erosion is the movement of sediment from one place to another. Erosion is the mechanical process of wearing or grinding somethin down. It condition in which the earth’s surface is worn away by the action of water and wind.
Therefore, the final answer is Erosion.
The volume of a 1.00-mole sample of an ideal gas will decrease when the
1.
pressure decreases and the temperature decreases
2.
pressure decreases and the temperature increases
3.
pressure increases and the temperature decreases
4.
pressure increases and the temperature increases
Answer:
The correct option is (3).
Explanation:
The ideal gas equation is given by :
[tex]PV=nRT\\\\V=\dfrac{nRT}{P}[/tex]
The pressure of ideal gas is directly proportional to temperature and inversely proportional to its volume.
We can say that the volume of a 1.00-mole sample of an ideal gas will decrease when the pressure increases and the temperature decreases.
The volume of the idea gas decrease when pressure increases and the temperature decreases. Thus option C is correct.
The ideal gas equation can be given as:
PV = nRT
The equation in terms of pressure and temperature when n=1 can be written as:
Volume = [tex]\rm \dfrac{RT}{P}[/tex]
Accordingly, the volume has been directly proportional to the temperature and has been inversely proportional to the pressure.
Thus, with the decrease in volume, there has been an increase in pressure and a decrease in temperature.
Thus, option C is correct.
For more information about the ideal gas, refer to the link:
https://brainly.com/question/8711877
Which of the following is the best explanation of why an ionic compound formula is a ratio of atoms
ООО
The sharing of electrons is always in a simple ratio
The number of atoms in an ionic compound change... there can be several possible combinations
When ions form they are attracted to each other and "cxmp" together to form a crystal
lonic compounds conduct electricity when dissolved in water.
How are nuclear fission and nuclear fusion similar?
A. Both processes combine smaller nuclei into larger nuclei.
B. Both processes convert mass into energy.
C. Both processes are used to produce electrical power.
D. Both processes occur in stars.
Answer:
C. Both processes convert mass into energy.
First balance the following reaction.
S8 + O2 => SO2
Then, if you have 93.00 grams of Sulfur and 80.00 grams Oxygen. How many grams of Sulfur Dioxide will your produce. You must show ALL of your work to get credit. Show each step in calculating your final answer.
is it S2 or S8 please check the equation
The atmospheric pressure at 1000 m altitude is 0.868 atm.
What is this pressure in Pascals?
Pa
Answer:0.868
Explanation:
Answer: 87950.1 Pascals
According the article , why is it difficult for many cities in the U.S today to recycle
Why recycling isn't working in the U.S.
Many recyclables become contaminated when items are placed in the wrong bin, or when a dirty food container gets into the recycling bin. Contamination can prevent large batches of material from being recycled. Other materials can't be processed in certain facilities.
Which of the following will dissolve the fastest
Answer:
Saturated.
Explanation:
This explains the solute dissolving faster. It links with the definition of soaked with moisture; drenched.
Answer:
I believe the answer would be C. unsaturated. and for part 2 I believe would be A. hope that helps :)
The initial pressure of 0.31 moles of gas in a drum is 742 torr. If gas is added to the drum and the final pressure is 759 torr, how many moles of gas are in the drum? Hint: for this problem, you do not have an equation in the Introduction section, but based on the relationship between pressure and volume, what can you determine about the relationship between pressure and the number of moles?
Answer:
0.32 mole
Explanation:
From the question given above, the following data were obtained:
Initial mole (n₁) = 0.31 mole
Initial pressure (P₁) = 742 torr
Final pressure (P₂) = 759 torr
Final mole (n₂) =?
The final mole of the gas in the drum can be obtained as follow:
P₁/n₁ = P₂/n₂
742 / 0.31 = 759 / n₂
Cross multiply
742 × n₂ = 0.31 × 759
742 × n₂ = 235.29
Divide both side by 742
n₂ = 235.29 / 742
n₂ = 0.32 mole
Thus, the final mole of the gas in the drum is 0.32 mole