Answer:
93.5 moles N₂
Explanation:
To find the moles, you need to use the Ideal Gas Law. The equation looks like this:
PV = nRT
In this equation,
-----> P = pressure (atm)
-----> V = volume (L)
-----> n = number of moles
-----> R = constant (0.0821 atm*L/mol*K)
-----> T = temperature (K)
You can plug the given values into the equation and simplify to find moles. The final answer should have 3 sig figs to match the lowest number of sig figs among the given values.
P = 95.0 atm R = 0.0821 atm*L/mol*K
V = 224 L T = 2773 K
n = ?
PV = nRT
(95.0 atm)(224 L) = n(0.0821 atm*L/mol*K)(2773 K)
21280 = n(227.6633)
93.5 = n
Answer:
93.5 moles N₂
Explanation:
You can plug the given values into the equation and simplify to find moles. The final answer should have 3 sig figs to match the lowest number of sig figs among the given values.
P = 95.0 atm R = 0.0821 atm*L/mol*K
V = 224 L T = 2773 K
n = ?
PV = nRT
(95.0 atm)(224 L) = n(0.0821 atm*L/mol*K)(2773 K)
21280 = n(227.6633)
93.5 = n
Explanation:
Balance the equation in the space below for the reaction of ammonia and oxygen, using the smallest whole number coefficients
NH₂(g) + O₂(g) → N₂(g) + H₂O(g) + energy
The balanced equation of the reaction is:
2 NH₂(g) + O₂(g) → N₂(g) + 2 H₂O(g) + energy What is a balanced equation of a reaction?A balanced equation is an equation of a reaction in which the moles of atoms of elements in the reaction are equal on both sides of the equation.
The given equation can be balanced as follows:
2 NH₂(g) + O₂(g) → N₂(g) + 2 H₂O(g) + energy
Therefore, the balanced equation of the reaction is the one in which the moles atoms of reacting elements are equal.
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HELP FAST PLEASE! If a reaction takes place and the theoretical yield is 73 g and the actual yield is 62 g, calculate the percent yield.
Choices:
A. 76%
B. 1.16%
C. 116%
D. 85%
Answer:
A
Explanation:
I think it's A. There are good answer for A.
What is the si unit that refers to the number of particles contained in a substance.
Answer:
one mole contains exactly 6.022 14076 into 10 23 elementary this number is the fix numerical value of the evandi and the constant and a b where expects in the unit mol - 1 is called the abacation number that amount of substance of a system is measured of the number specific
Which shows two structures that are made mostly of metal?
Answer:
The bell and the Eiffel tower
How many moles of electrons are transferred when 2.0 moles of aluminum metal react with excess copper(II) nitrate in aqueous solution to form Al(NO3)3(aq) and Cu(s)
Moles of electrons:
The moles of electrons that are transferred are 12F
A balanced equation:
2 moles of Aluminium metal react with excess copper(II) nitrate.
[tex]2Al + 3Cu{(NO_3)}_2 \rightarrow 2Al{(NO_3)}_3 +3 Cu[/tex]
Given:
Moles of Aluminium = 2
As Aluminium goes from 0 to +3 oxidation state
[tex]Al \rightarrow Al^{3+} + 3e^-[/tex]
And copper goes from +2 to 0
[tex]Cu^{2+} + 2e^-\rightarrow Cu[/tex]
On balancing the number of electrons we get:
For 1 mole of Al [tex]6e^-[/tex] is required.
Therefore for 2 moles of Al,
Total [tex](2\times6)[/tex]F mole of electrons
Where F= Faraday's constant= 96500 C
So, 12F moles of electrons are transferred.
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Based on our consumption of fossil fuels today, what can be predicted will eventually occur? Select all that apply
Based on consumption of fossil fuels today, It can be predicted Fossil Fuels will eventually be used up and a new energy developed to supply energy needs of the world.
What are fossil fuels ?Fossil fuels are made from decomposing plants and animals.
These fuels are found in the Earth's crust and contain carbon and hydrogen, which can be burned for energy.
Coal, oil, and natural gas are examples of fossil fuels.
Above given fossil fuels are expected to be used up and a new energy developed to supply energy needs of the world.
Therefore, Based on consumption of fossil fuels today, It can be predicted Fossil Fuels will eventually be used up and a new energy developed to supply energy needs of the world.
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explain why nickel is a good conductor of heat
Answer:
Its a good conductor because its a metal
Answer:
periodic table
Explanation:
in its magnetic properties and chemical activity it resembles iron and cobalt
What does the NaBr + Cl₂ represent
in the reaction?
NaBr + Cl₂ →>>
NaCl + Br₂
Answer:
The reactants
Explanation:
The molecules on the left side of the reaction are the reactants. Reactants are the molecules which react with one another to form something new.
The molecules on the right side of the reaction are the products. Products are the molecules that form in response to the reaction.
Please help!
Three sections of the periodic table are labeled A, B, and C in the image below.
Which of the following statements is most likely true for an element present in section A?
It is dull and brittle.
It is malleable and ductile.
It is a liquid at room temperature.
It is a poor conductor of electricity.
Answer:
they are metals so they are:-
-malleable
-ductile
because metallic bonding is the same in all direction throughout the solid
How many moles FeBr3 are required
to generate 275 g NaBr?
2FeBr3 + 3Na₂S → Fe₂S3 +6NaBr
Answer:
0.893mol
Explanation:
n = m ÷ M
= 275 ÷ (23 + 80)
= 2.67 mol
* now use the Mol ratio *
NaBr : FeBr3
6 : 2
2.67 : x
5.67 = 6x
n( FeBr3 ) = 0.893 mol
What is the wavelength of an electromagnetic wave that has a frequency of 7.80 * 10 ^ 14 Hz in a vacuum? (The speed of light in a vacuum is 3.00 * 10 ^ 8 m/s.)
A. 1.22 * 10 ^ - 15 * m
B. 3.85 * 10 ^ - 7 * m
C. 2.34 * 10 ^ 23 * m
D. 2.60 * 10 ^ 6 * m
Answer:
B.) 3.85 x 10⁻⁷ m
Explanation:
To find the wavelength, you can use the following formula:
wavelength = speed of light / frequency
Since you have been given both the speed of light and frequency, you can plug these values into the equation to find wavelength.
wavelength = speed of light / frequency
wavelength = (3.00 x 10⁸ m/s) / (7.80 x 10¹⁴ Hz)
wavelength = 3.85 x 10⁻⁷ m
what are the 3 common gases that give off reactions?
The 3 common gases that give off reactions are Hydrogen sulfide, Carbon monoxide, Nitrogen oxides.
What are off reactions
Off reactions are defined as chemical reactions that occurs when something burns or during combustion of materials which gives off energy.
Some gases that give off reaction are:
Hydrogen sulfideCarbon monoxideNitrogen oxidesNote that these gases are mostly poisonous.
Therefore, the 3 common gases that give off reactions are Hydrogen sulfide, Carbon monoxide, Nitrogen oxides.
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When some water condensed
onto a glass, it released 9.15 Cal
of energy. How many joules of
energy is this?
[?] joules
When we convert 9.15 Calories to joules, the result obtained is 38.28 Joules
How do i convert 9.15 calories to joules?From the question given above, the following data were obtained:
Energy (in Calories) = 9.15 caloriesEnergy (in Joules) =?The conversion scale to convert calories to joules is given below:
1 Calorie = 4.184 Joules
Using the above scale, we can convert 9.15 calories to joules as shown below:
1 Calorie = 4.184 Joules
Therefore,
9.15 Calories = (9.15 Calorie × 4.184 Joules) / 1 Calorie
9.15 Calories = 38.28 Joules
Thus, we can conclude from the above calculation that the energy in joules is 38.28 Joules
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Answer:
38,200J
Explanation:
9.15 x 4.18 x 1000= 38,247 → 38,200J
Which of the following is NOT an example of pseudoscience?
A. Psychics
B. Healing crystals
C. Vaccines
D. Acupuncture
Answer:
I think its vaccines
The chemical formula for a emerald is BeAl2(SiO3)6.
An emerald can be described as
Emerald can be described as a transparent, green coloured gem stone made up of mineral beryl together with trace amount of chromium or sometimes vanadium having chemical formula as [tex]Be_3Al_2(SiO_3)_6[/tex] .
Through time, the emerald has been known as a symbol of truth and love.
In ancient Greece and Rome, emerald was said to be the gemstone of the goddess Venus, purveyor of love and hope.
On the other side of the world, emeralds were revered by the Incas and believed by the Egyptians to be a source of eternal life.
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• Reflect on the importance of stoichiometry and rate of chemical reaction in the design of car airbags
Answer:
If an insufficient amount of nitrogen were produced, the air bag would under inflate and not provide adequate protection. Clearly, the stoichiometry of the reaction is very important.
4 Many tourists to China want to see giant pandas. Suggest how this could be used to help to conserve the pandas.
Answer: to protect giant pandas
Explanation:
A can of coke which is 12.0ml and is at a temperature of 18.0°C is placed into a refrigerator freezer. The
can was accidently left over night and the temperature dropped to -1.00°C. What would happen to the
volume of the coke can?
Answer:
See below
Explanation:
Volume would decrease to temp of approx 4 C then it would slightly increase to the 1 degree C point but it would still be a smaller volume than at 18 C .
( this assumes a freezing point of - 1.11 C for Coke )
Match the zone to its characteristics.
Horse latitudes
Subpolar low
Doldrums
?
?
?
Heavy precipitation, little
wind
The trade winds and
westerlies originate here
Lies along the polar jet
stream
The zone and its characteristics include the following:
Subpolar low: Lies along the polar jetstream.Horse latitudes: The trade winds and westerlies originate here.Doldrums: Heavy precipitation, little wind.What is Horse latitude zone?This is referred to regions which is located at about 30 degrees north and south of the equator and forms the basis of westerlies.
The other zones such as doldrums are also found at the equator with their respective features and can be seen above. This therefore makes it the most appropriate choice.
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predict the missing component in the nuclear equation
The answer is C since both charge and mass have to be balanced on both sides of the equation.
What is the independent variable for boiling temperature of water as salt is adddd
The independent variable is the different amounts of salt that will be added to the water.
What is a variable?A variable is any characteristic, number, or quantity that can be measured or counted.
The independent variable is the different amounts salt that will be added to the water (what is done by the scientist).
The dependent variable is the boiling temperature of the water (what is being measured).
HYPOTHESIS: If salt is added to water then, the boiling temperature is lowered.
Hence, the independent variable is the different amounts of salt that will be added to the water.
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anyone? got an answer
Please help ASAP
Is there any evidence that a reaction has occurred? (One or more answers may be true.)
a. No, there is no change in the solution.
b. Yes, because H2SO4 is being added.
c. Yes, a precipitate formed.
d. Yes, there is a change in conductivity.
How do you separate a honey and water solution?
Answer:
Keep it undisturbed for some time and let it settle down. Then use a separating funnel, to separate them both
Explanation:
What is the name of this hydrocarbon?
hexane
O heptane
O octane
O pentane
Mark this and return
H H H H H
|||||
H-C-C-C-C-C-H
|||II
H H H H H
Save and Exit
Next
Submit
Answer:
alkanes alkens alkenes and a bromatic hydrocarbons
Answer:
[tex]\huge\boxed{\sf Pentane}[/tex]
Explanation:
The given compound has:5 carbonsall single bondsPrefix for 5 carbons = Pent
Suffix for all single bonds = ane (since the compound is alkane)
So, the name of this hydrocarbon is:
Pentane[tex]\rule[225]{225}{2}[/tex]
The ideal gas law only approximates the behaviour of real gases. The conditions
under which the ideal gas law is MOST accurate are
Answer:
I d K
Explanation:
How much energy is required to heat 36. 0 g h2o from a liquid at 65°c to a gas at 115°c? the following physical data may be useful.
The required energy will be "87752 J".
What is energy?The definition of energy is "ability to do work," which is the capacity to apply a force that causes an item to move.
Mechanical, heat, chemical, electrical, radiant, nuclear, and sound are the seven types of energy.
The energy will be:
Q1 = 36 × 3.18(100-65)
Q1 = 5267 J
Moles of water = [tex]\frac{36.0}{18}[/tex]
Moles of water = 2
then,
Q2 = 2× 40.7
Q2 = 81.4 KJ
Q2 = 81400 J
Q3 = 36.0 × 2.01(115-100)
Q3 = 1085 J
hence,
Required energy will be= Q1+ Q2+ Q3
Required energy = 5267 + 81400 + 1085
Required energy = 87752 J
hence, 87752 J energy is required to heat 36. 0 g h2o from a liquid at 65°c to gas at 115°c.
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Which compound contains only nonpolar covalent bonds?.
Answer:
02 or oxygen if im not mistaken
what is the molarity of the NaOH
the answer is:
40 g/mole
The density of lead is 11.3 g/mL. What is the mass of 45 mL of the metal?
Answer:
510g
Explanation:
45mL..
1mL
_____ = 510g
11.3g