4A1+30₂ → 2Al₂O3
6.0 mol Al can form 3.0 mol Al2O3.
4.0 mol O2 can form 2.7 mol Al2O3.
Which reactant is limiting (forms less
product)?
2) 0₂
1) Al
Answers
4A1+30₂ → 2Al₂O3,6.0 mol Al can form 3.0 mol Al2O3 and 4.0 mol O2 can form 2.7 mol Al2O3. Oxygen reactant is limiting. Therefore, option 2 is correct.
What is limiting reactant ?The limiting reagent is a substance that prevents a chemical reaction from occurring completely. When a limiting reagent is used in a chemical reaction, the atoms, molecules, or ions of the other reactant that it (the limiting reagent) reacts with will either stay free or unreacted.
As you can see, O2 creates less of the final good. Therefore, the limiting reactant is O2. Keep in mind that the limiting reactant is the one that depletes before the other reactant(s) are fully reacted. As a result, 2.7 moles of Al2O3 were actually created.
Thus, option 2 is correct.
To learn more about limiting reactant, follow the link;
https://brainly.com/question/14225536
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Related Questions
6) A student measures out 96.21 g of sulfur for an experiment. How many moles of Sulfur are in this
sample? (show your work!)
Answers
Atomic mass of Sulfur = 32g
32g of Sulfur is one mole.
1g of Sulfur is [tex] \frac{1}{32} moles [/tex]
96.21g of Sulfur is [tex] \frac{96.21}{32} moles=> 3moles(appx) [/tex]
Answer:
[tex]\boxed {\boxed {\sf 3 \ moles \ sulfur}}[/tex]
Explanation:
To convert from grams to moles, the molar mass is used. This value is the number of grams in 1 mole of a substance and it can be found on the Periodic Table. Look for Sulfur or S.
Sulfur: 32.07 g/molWe use this as a ratio.
[tex]\frac {32.07 \ g \ S}{1 \ mo;\l\ S }[/tex]
Multiply by the given number of grams.
[tex]96.21 \ g \ S*\frac {32.07 \ g \ S}{1 \ mo\l\ S }[/tex]
Flip the fraction so the grams of sulfur cancel out.
[tex]96.21 \ g \ S*\frac {1 \ mol \ S}{32.07 \ g \ S }[/tex]
[tex]96.21*\frac {1 \ mol \ S}{32.07 }[/tex]
[tex]\frac {96.21 \ mol \ S}{32.07 }= 3 \ mol \ S[/tex]
96.21 grams of sulfur is equal to 3 moles of sulfur.
neeed morreeeee help w science
Answers
Answer:
60
Explanation:
Answer:
its actually 83° rounding it so choose that
Calculate the density of carbon dioxide at STP
Answers
Answer:
Density = mass/volume
= 44/22.4
= 1.96 gram/liter
The density of the Carbon Dioxide at S.T.P. (Standard Temperature and Volume) is 1.96 gram/liter.
You had a closed tank of air at a pressure of 4 atm and temperature of 20 degrees Celsius. When the tank and the air are heated to 40 degrees Celsius, what is the pressure if the volume remains constant?
Answers
Answer:
The pressure will be 4.27 atm.
Explanation:
Gay-Lussac's law can be expressed mathematically as follows:
[tex]\frac{P}{T} =k[/tex]
Where P = pressure, T = temperature, K = Constant
This law indicates that the quotient between pressure and temperature is constant.
This law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
In short, when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases.
You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 4 atmT1= 20 C= 293 K (being 0 C= 273 K)P2= ?T2= 40 C= 313 KReplacing:
[tex]\frac{4 atm}{293 K} =\frac{P2}{313 K}[/tex]
Solving:
[tex]P2= 313 K* \frac{4 atm}{293 K}[/tex]
P2= 4.27 atm
The pressure will be 4.27 atm.
How is the chemical bonding between atoms of magnesium different from the chemical bonding within a crystal of aluminum iodide?
Answers
Answer:
See explanation
Explanation:
The bond between magnesium atoms is a metallic bond while the bond within a crystal of aluminum iodide is an ionic bond.
A metallic crystal consists of a sea of electrons that are electrostatically attracted to positive metal ions. This is the nature of the bonding between magnesium atoms in a crystal of magnesium.
In aluminum iodide, there is a transfer of electrons from aluminium to iodine which is typical of an ionic bond. Electrostatic interaction holds oppositely charged ions together in the crystal of aluminum iodide.
When performing a neutralization reaction, how should students test the solution to be sure which is the acid and which is the base?
Answers
Explanation:
La reacción entre un ácido y una base se llama neutralización. Cuando en la reacción participan un ácido fuerte y una base fuerte se obtiene una sal y agua. Si una de las especies es de naturaleza débil y la neutralización se produce en disolución acuosa también se obtiene su respectiva especie conjugada y agua.
What do we examine to understand the differences between the different states of matter?
A. Electronegativity of the matter present
B. Moles of matter present.
C. Behavior of the particles
D. Size of the particles
Answers
Answer:
C. Behavior of the particles
Can yall help me with this one, thanks!
Answers
Answer:
Element atom molar mass Total % composition
Na 1 23 40 57.5 %
O 1 16 40 40%
H 1 1 40 2.5 %
The given compound is NaOH.
Na : number of atom= 1
Molar mass= 23 g/mol
Total mass of NaOH = 40 g/mol
% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{23}{40}\times 100=57.5\%[/tex]
O : number of atom= 1
Molar mass= 16 g/mol
Total mass of NaOH = 40 g/mol
% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{16}{40}\times 100=40\%[/tex]
H : number of atom= 1
Molar mass= 1 g/mol
Total mass of NaOH = 40 g/mol
% composition by mass = [tex]\frac{\text {mass of atom}}{\text {Total mass}}\times 100=\frac{1}{40}\times 100=2.5\%[/tex]
PLEASE HELP ME
What answer is it?
Answers
Windmills are sometimes helpful for some small rural communities.
True
False
Answers
Answer:
true
Explanation:
Which of the following phases of matter has a fixed volume but not a fixed shape?
A Liquid B Gas C Solid D Plasma
Answers
Answer:
C. solidExplanation:
Solid is a hard and not able to flow; not like a liquid or gas. Having no holes; not hollow. Something that is not liquid and gas. Solid has fixed volume but not a fixed shape.
The liquid is something that flows freely; a substance that is not solid or gas.
Gas is a substance that neither liquid nor solid, e.g. air.
Plasma is an electrically neutral ionized gas in an electric discharge; distinctly different from solids and liquids and normal gases.
Therefore, the correct answer is C. solid.
Answer:
A. Liquid
Explanation:
the guy above me is wrong
Pick one answer do not put any links please
Answers
Do you think it is a good idea for all scientists to use the same periodic table of elements? Why or why not?
Answers
An atom of a certain element has 19 protons, 19 electrons, and a mass number of 39. This element is very reactive. How many neutrons are in this atom?
Answers
Answer:
There would be [tex]20[/tex] neutrons in that atom.
Explanation:
The mass number of an atom is the sum of:
the number of neutrons in this atom, andthe number of protons in this atom.Electrons do not contribute to the mass number of an atom.
From the question:
Mass number of this atom: [tex]39[/tex].Number of protons in this atom: [tex]19[/tex].[tex](\text{Mass Number}) = (\text{Number of protons}) + (\text{Number of neutrons})[/tex].
In this atom:
[tex]39 = 19 + (\text{Number of neutrons})[/tex].
Hence, the number of neutrons would be [tex]39 - 19 = 20[/tex].
which pollutants come from air? How and why do these form?
Answers
Answer:
Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires.
Explanation:
How many molecules of carbon dioxide, CO2, are in 38.5 moles?
Answers
Answer:
2.31847E25
Explanation:
One mole of anything contains 6.022 x 10^23 items.
chelp meeee this is science btw but eahhhh
Answers
Answer: KCIO3
Explanation:
The graph shows that it is the lowest at 0 degrees meaning that it has the lowest solubility
Answer:
KOL c
Explanation:
Finish the essay technology improves nursing
Technology has helped correct medical errors with safety checks, finding an early diagnosis of a disease, and more. Technology is a huge part of nursing........
Answers
Answer: come on man its not that hard
Explanation:
Which of the following is a TRUE statement?
a.
A molecule always has three types of elements present
b.
Compounds always include the elements hydrogen and sodium
c.
Compounds include things we use in our everyday lives
d.
All elements prefer to hang out with other elements and form molecules
Answers
Answer:
b
Explanation:
Earthquakes and what kind of plate boundary movement cause them?
Answers
As altitude increases, what happens to air pressure the choices are it fluctuates, it increases, it decreases or it stays the same
Answers
Answer:
it decreases
Explanation:
It is a common saying the pressure decreases with height. This means that as altitude increases, the pressure of air decreases. The higher you go above sea level, the pressure becomes lesser.
This is as a result of decrease in the amount of air above sea level and hence a decrease in the density of air as altitude increases.
Hence, with increasing altitude, pressure decreases.
Answer:
It decreases
Explanation:
as pstnonsonjoku says in their answer.
I cannot give you anything more than I just did a question on this an it was correct because i'm in a timed test and just happend to see this!
Have a great nightish day!
pleaaseeee help im failing so bad3
Answers
How many particles are in a 34 g sample of Al2(SO4)3?
please help!
Answers
Answer:
5.98 × 10^22 particles
Explanation:
To get the number of particles (nA) in a substance, we multiply the number of moles of the substance by Avogadro's number (6.02 × 10^23)
The mass of Al2(SO4)3 given in this question is as follows: 34grams.
To convert this mass value to moles, we use;
Mole = mass/molar mass
Molar Mass of Al2(SO4)3 = 27(2) + {(32 + 16(4) }3
= 54 + (32 + 64)3
= 54 + 288
= 342g/mol
mole (n) = 34/342
n = 0.0994mol
number of particles (nA) of Al2(SO4)3 = 0.0994 × 6.02 × 10^23
= 0.598 × 10^23
= 5.98 × 10^22 particles
Number 6
Metals react with _______ to form co.pounds that are like alkaline.
A. Non metals
B. Oxygen
C. Hydrogen
D. Metalloids
Answers
Answer:
B) Oxygen atoms
Explanation:
When metals react oxygen atom then they tend to form metal oxides which are basic in nature. This is because when metal oxides are added in water then it results in the formation of metal hydroxides which are alkaline in nature
Over millions of years silt washed into a lake formed layers of sedimentary rock. What type of rock was likely formed?
Answers
Answer:
Explanation:
siltstone
Over millions of years, silt washed into a lake formed layers of sedimentary rock. What type of rock was likely formed? A type of detrital sedimentary rock called siltstone was the likely product of this process.
3. The density of ethanol is 0.789 g/mL. How many grams of ethanol should be mixed with 225 mL of water to make a 4.5% (v/v) mixture?
Answers
Answer:
I don't know what to say sorry
what are the five major types of celestial bodies in the solar system
Answers
Answer:
the Sun, planets, satellites, comets, asteroids and meteoroids.
Explanation:
hope it helps :)
how acceptance of responsibility influence affective in communication
Answers
Answer:
f
Explanation:
The pH of tomato juice is 4, thus tomato is a (an) _______________ substance
Answers
Answer:
Acidic
Explanation:
pH from 0-6.9 are acidic substances
pH of 7 are neutral
pH above 7 to 14 are badic substances
Answer: Acidic
Explanation:
PH of 1-6 is considered acidic.
PH of 7 is neutral.
PH of 8-14 is considered basic (alkaline)
help me pretty please
Answers
Answer:
If i had to take a stab at it would say C
Explanation:
Answer:
I think it might be C but not 100% sure.
Explanation:
When the object transmits all color frequencies.