Answer:
x= 5.418*10^24
Explanation:
x * (22.4*6) = 33.6*(6.02*10^23 * 5)
x= 5.418*10^24
The number of moles of oxygen to produce 33.6 L water is 1.25. The number of oxygen molecules in 1.25 moles is 7.52 × 10²³.
What is STP condition?The condition of standard temperature temperature and pressure STP is the 298 K and 1 atm pressure. At this condition one mole of every substances contains 22.4 L of volume.
As per the given reaction 5 moles or 5 × 22.4 = 112 L is needed to produce 6 moles or 6 ×22.4 = 134.4 L of water at STP. Hence, the volume of oxygen required to produce 33.6 L of water is:
volume of oxygen = (33.6 l× 112 l)/134.4 l
= 28 L.
28 L of oxygen is 28/22.4 = 1.25 moles of oxygen at STP. One mole of oxygen gas contains 6.022 × 10²³ molecules. Hence, number of molecules in 1.25 moles is:
1.25 × 6.022 × 10²³ = 7.52×10²³.
Therefore, 7.52×10²³ molecules of oxygen gas will be consumed to produce 33.6 L of water at STP.
To find more on STP, refer here:
https://brainly.com/question/10307303
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what is Metallic Characteristics
Answer:
metallic characteristics refers to the level of reactivity of a metal. Metals tend to lose electrons in chemical reactions, as indicated by their low ionization energies. Within a compound, metal atoms have relatively low attraction for electrons, as indicated by their low electronegativities.
Explanation:
could anyone give me the answer to this plz 20 points
Ionic bond is found between Immersive Reader
A- Non-metals with Non-metals
B- Non-metals and Metalloids
C-Metals and Non-metals
D- Metals and Metalloids
Answer:
A
Explanation:
I hope this helps. A because two non-metals can form together.
According to the law of conservation of matter, how must a chemical equation be written?
Question 6 options:
The subscript of every element must be the same on each side of the equation.
An equal number of compounds must appear on each side of the equation.
The same coefficient must be applied to every molecule in the equation.
An equal number of atoms must be on both sides of the equation.
Answer:
An equal number of atoms must be on both sides of the equation.
Explanation:
What is the acceleration of a 10kg object if a force of 3N is applied to it
Answer:
0.3kg/min
Explanation:
The formula for acceleration is a = f/m where f = force and m = mass.
a = 3/10
a = 0.3
Best of Luck
clouds form when water vapor in the atmosphere
A-evaporates
B-condenses
C-runsoff
D-precipitates
Answer:
A- evaporates
Answer:
Condenses
Explanation:
Clouds are created when water vapor, an invisible gas, turns into liquid water droplets. These water droplets form on tiny particles, like dust, that are floating in the air.
can a sample of methane contain 1577 atoms?
Which of the following are examples of chemical changes?
change in composition
a substance decomposing
burning
melting
Answer:
change in composition
a substance decomposing
burning
Explanation:
A chemical change is one in which a new kind of matter is formed. It is always accompanied by energy changes (evolution or absorption of energy in form of heat or light or both).
This process is often irreversible.
Chemical changes involves changes in mass. It requires considerable amount of energy. It leads to the production of new kinds of matterNow, processes such as burning and decomposition are chemical changes and are not easily reversible.
Since new kind of matter is formed, there is a change in composition.
Melting is a physical change that is easily reversed.
Other examples of chemical changes are rusting of iron, precipitation and souring of milk.
Answer: 1 change in composition 2 a subtance decomposing 3 burning
What mass of aluminum is required if 40.0 grams of iron (III) oxide is to be completely consumed as
shown in the following reaction? (NO CALCULATOR) Fe2O3(s) + 2Al(s) → 2Fe(l) + Al2O3(s) (A) 13.5 g (B) 27.0 g (C) 40.0 g (D) 67.0 g
Answer:
13.5
Explanation:
Molar mass of Fe2O3 = 2*56 + 16*3 = 112 + 48 =160 approximate value
Number of moles of Fe2O3 = mass/molar mass = 40/160 = 0.25 mol
The reaction is balanced. Fine
1 mol of Fe2O3--------> 2 mol of Al
0.25 mol--------> 0.25*2 = 0.5 mol of Al
Mass of Al required = Number of moles * Molar mass
= 0.5 * 27 = 13.5 g
5.0 x 104 ml of gasoline is added to a boat that weighs
4.5 kg. What will be the mass of the boat with the added gasoline?
Answer:
ml can not be kg because ml is volume
Determine the number of moles of oxygen gas (O2) that are needed to react with 0.725 moles of aluminum (Al).
4Al (s) + 3O2 (g) ⟶ 2Al2O3 (s)
Given :
Oxygen gas ([tex]O_2[/tex]) that are needed to react with 0.725 moles of aluminum (Al).
[tex]4Al(s)+3O_2(g)->2Al_2O_3(s)[/tex]
Solution :
4 moles of Aluminium react with 3 moles of oxygen,
Let, moles of oxygen react with 0.725 moles of Al is x.
[tex]x=\dfrac{0.725\times 3}{4}\\\\x=0.54375\ moles[/tex]
Hence, this is the required solution.
The number of moles that should be required to react is 0.54375 moles.
Calculation of the number of moles:Since There are 0.725 moles of aluminum (Al)
And, there is the chemical equation 4Al (s) + 3O2 (g) ⟶ 2Al2O3 (s)
The above equation represent 4 moles of Aluminium should be react with 3 moles of oxygen.
So, the number of moles should be
= 0.725 * 3/4
= 0.54375 moles
Therefore, The number of moles that should be required to react is 0.54375 moles.
Learn more about moles here: https://brainly.com/question/19462659
Which would be an example of a compound?
oxygen
carbon dioxide
sand
carbon
Answer:
carbondioxide is an example of compound.
Where on the table would a group's
ionization energy be the greatest?
Answer:
upper left
Explanation:
it is a trend on the periodic table. Ionization energy increases from left to right(->) I t also increases down to up
Answer:
right
Explanation:
If you are doing this on usatestprep its on the right side
Sam has a sample of water and a sample of carbon dioxide gas. Which sample is compressible?
Carbon dioxide
Neither
both
Water
Answer:
Carbon Dioxide
Explanation:
An igneous rock is found on the ground and has no identifiable crystals. What is the most likely origin of this rock?
Answer:
Its a Extrusive Igneous Rock
Explanation:
They form on the surface where they cool.
Answer: Rock was eroded by surrounding rocks
Explanation: my teacher said that but i think it is wrong-
The work-energy theorem states that the work done on an object is equal to a change in which quantity?
O kinetic energy
O displacement
O potential energy
Omass
Answer :
A.) Kinetic energy
Explanation:
When work is either added to or taken away from a system, it forces the kinetic energy to change.
The work-energy theorem states : change in kinetic energy of an object is equal to the work done on the object
[ I took the quiz already on Edgenuity and received 100% ]
Hope this helped ! :)
Answer:
Kinetic energy
Explanation:
Edge 2020
How many atoms of each element are in 4Na3PO4?
3 sodium, 1 phosphorus, 4 oxygen
4 sodium, 4 phosphorus, 4 oxygen
12 sodium, 1 phosphorus, 4 oxygen
12 sodium, 4 phosphorus, 16 oxygen
Answer:
12 sodium, 4 phosphorus, 16 oxygen
Explanation:
4Na3PO4
Has (4X3) Na ,( 4X1) P ,(4X4) O
Answer:
12 sodium, 4 phosphorus, 16 oxygen
DDDDDDDDDDDDD
Explanation:
How would this be written as a formula? 6 molecules of water *
Answer:
either 1 or 3
Explanation:
brain
What’s the answer????
Answer:
DNA
Explanation:
Covalent bond occur between which groups of elements?Immersive Reader
a-Non-metals and Metalloid
b-Metals and Non-metals
c-Non-metals and Non-metals
d-Metals and Metalloid
7 Salt water containing 1.92 lb/gal of salt flows at a fixed rate of 2 gal/min into a 100 gal tank, initially filled with fresh water. The density of the incoming solution is 71.8 lb/ft3. The solution, kept uniform by stirring, flows out at a fixed rate of 19.2 lb/min. How many pounds of salt will there be in the tank at the end of 1 h and 40 min? What is the upper limit for the number of pounds of salt in the tank if the process continues indefinitely? How much time will elapse while the quantity of salt in the tank changes from 100 to 150 lb?
Answer:
The quantity of salt is "957 lb". A further explanation is given below.
Explanation:
(1)
As we know,
1 hour 40 Min
= 60 min + 40 min
= 100 min
Salt water is going in at the rate of 2 gal/min
Salt water went into the tank in 100 min will be:
= [tex]2 \ gal/min\times 100 \ min = 200 \ gal[/tex]
We have 1.92 lb of salt per gal.
In 200 gal, salt went in 1 hour 40 min will be:
= [tex]1.92 \ salt/gal\times 200 \ gal[/tex]
= [tex]384 \ lb[/tex]
Now,
ft3 = 7.5 gal
The density of solution will be:
= [tex]\frac{71.8 \ lb}{7.5 \ gal}[/tex]
= [tex]9.57 \ lb/gal[/tex]
The solution went out in 100 min 1920 lb as well as going out at 19.2 lb per min.
= [tex]\frac{1920 \ lb}{9.57 \ lb/gal}[/tex]
= [tex]200 \ gal[/tex] (salt went out)
The salt remained in the tank at the end of 1 hour 40 min i.e.,
= [tex]384 - 200[/tex]
= [tex]184 \ lb[/tex]
(2)
As well as the upper limit for the no. of pounds for continues stirring indefinitely per 100 gal will be:
= [tex]957 \ lb[/tex]
I need help plsssssssssssssss
Answer:
B
Explanation:
What is SI unit and it's advantage
explain how you think we can determine if a substance is a pure substance or a mixture.
Answer:
Pure substances are further broken down into elements and compounds. Mixtures are physically combined structures that can be separated into their original components.
Explanation:
What is the electron configuration of the element in period 2 that has 5 valence electrons (valence electrons are the electrons in the outermost shell) *
Answer:
Nitrogen
Explanation:
N= is the symbol
electronic configuration
1s2 2s2 2p3
Which of these elements would have the largest atomic radius?
Answer:
It is Li FOR SURE
Explanation:
Answer:it’s Li
Explanation:
Neon (Ne) is in group 18. This element
1. has 18 electrons
2. has 18 electron shells
3. is very stable
4. forms a salt when combined with a metal
Answer:
option 3
Explanation:
Neon is one of the noble gases. Noble gases don't react with any element because of their stability. Elements of Group 18 in Periodic Table are inert gases.
Answer:
is very stable
Explanation:
Which of the following questions could best be answered by the work of
Charles Kuen Kao?
How many grams of AlCl3 can be prepared from 3.5 moles of HCl gas?
Answer:
156 g of AlCl₃ will be produced from 3.5 moles of HCl.
Explanation:
Given data:
Number of moles of HCl = 3.5 mol
Grams of AlCl₃ produced = ?
Solution:
Balanced Chemical equation:
3HCl + Al(OH)₃ → AlCl₃ + 3H₂O
Now we will compare the moles of AlCl₃ with HCl from balanced chemical equation.
HCl : AlCl₃
3 : 1
3.5 : 1/3×3.5 = 1.17 mol
Mass of AlCl₃ produced:
Mass = number of moles ×molar mass
Mass = 1.17 mol × 133.341 g/mol
Mass = 156 g
Thus 156 g of AlCl₃ will be produced from 3.5 moles of HCl.
Lithium has an atomic mass of 6.941 amu. Lithium has two common isotopes. The one isotope has a mass of 6.015 amu and a relative abundance of 7.49%.
What is the abundance of the other isotope?
What is the mass of the other isotope?
Answer:
The atomic mass of second isotope is 7.016
Explanation:
Given data:
Average Atomic mass of lithium = 6.941 amu
Atomic mass of first isotope = 6.015 amu
Relative abundance of first isotope = 7.49%
Abundance of second isotope = ?
Atomic mass of other isotope = ?
Solution:
Total abundance = 100%
100 - 7.49 = 92.51%
percentage abundance of second isotope = 92.51%
Now we will calculate the mass if second isotope.
Average atomic mass of lithium = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) / 100
6.941 = (6.015×7.49)+(x×92.51) /100
6.941 = 45.05235 + (x92.51) / 100
6.941×100 = 45.05235 + (x92.51)
694.1 - 45.05235 = (x92.51)
649.04765 = x 92.51
x = 485.583 /92.51
x = 7.016
The atomic mass of second isotope is 7.016
