Answer:
OB
Explanation:
wat does aquire mean
Answer:
a
Explanation:
a damaged stem
1. The gases SO2, O2 and SO3 are allowed to reach equilibrium at a constant temperature. The equilibrium constant for the reaction
2SO2(g) + O2(g) -> 2S03(g)
is 1.6 x 104 atm-1
a) Calculate the value of Kp for the reaction
SO2(g) + ½O2(g) -> SO3(g)
(b) The equilibrium constant for the dissociation of Pcl5(g) to form PCl3(g) and Cl2(g) is
0.04 at 250°C. An equilibrium mixture contains 0.20 mol PC13 and 0.12 mol Cl, in a
4000 cm container.
i) Write the chemical equation.
ii) Calculate the concentration of PCIs in this container.
Answer:
a)
[tex]K_2=1.3x10^{2}atm^{-1/2}[/tex]
b)
[tex]PCl_5\rightarrow PCl_3+Cl_2[/tex]
[tex][PCl_5]=0.0375M[/tex]
Explanation:
Hello!
a) In this case, since we can see that the second reaction is equal to the half of the first reaction, we can relate the equilibrium constants as shown below:
[tex]K_2=K_1^{1/2}[/tex]
Thus, by plugging in the the equilibrium constant of the first reaction we obtain:
[tex]K_2=(1.6x10^4atm^{-1})^{1/2}\\\\K_2=1.3x10^{2}atm^{-1/2}[/tex]
b) In this case, for the described reaction we can write:
[tex]PCl_5\rightarrow PCl_3+Cl_2[/tex]
Thus, the corresponding equilibrium expression is:
[tex]K=\frac{[PCl_3][Cl_2]}{[PCl_5]}[/tex]
In such a way, since we know the equilibrium constant and the concentrations of PCl3 and Cl2 at equilibrium, we can compute the concentration of PCl5 at equilibrium as follows:
[tex][PCl_5]=\frac{[PCl_3][Cl_2]}{K}\\[/tex]
[tex][PCl_5]=\frac{\frac{0.20mol}{4L} *\frac{0.12mol}{4L} }{0.04}[/tex]
[tex][PCl_5]=0.0375M[/tex]
Best regards!
Please help this is a big grade please
Answer:
the answer Is d
Explanation:
or the last option is the answer if u need an explanation I may help u and tell me if u are from India
Answer:
dvis you're answer please like me
(3.5x10^5)x(4x10^-3)=exponent form
Answer:
1.4 x 10³
Explanation:
Given:
(3.5 x 10⁵)x(4 x 10⁻³)
Find:
Exponent form
Computation:
⇒ (3.5 x 10⁵)x(4 x 10⁻³)
⇒ 3.5 x 4 x 10²
⇒ 14 x 10²
1.4 x 10³
iii. A sound wave can be modelled by using a slinky spring. A wavelength in this model is...
a. the distance between a rarefaction and a compression.
b. the length of one compression.
c. the length of one rarefaction.
d. the distance between two rarefactions,
Answer: d. the distance between two rarefactions,
Explanation:
Wavelength is the distance between two identical adjacent points in a wave. This means that it is the distance between two adjacent compressions or two adjacent rarefactions.
Wavelengths are inversely related to frequency because the longer the wavelength, the less the number of wave cycles per second.
Which of these correctly describes the energy that makes the carousel turn
Answer:
F
Explanation:
A carousel can be made to rotate using different sources of energy. One may decide to use electric energy, manual effort, water energy or heat energy as in a candle carousel.
When the candle is lit, heat energy is supplied and warm air rises heating up the air near the carousel eventually causing it to start rotating.
Hence heat from the candle leads to a current of warm air that rises up, causing the carousel to start rotating.
Calculate the pH for each H+ concentration.
[H+] = 1 x 10-8 M
pH =
---
[H+] = 0.001 M
pH
[H+] = 1 x 10-12 M
pH =
Answer:
The answer of 1×10 -8 is 2
A gas is enclosed in a cylinder fitted with a piston. The volume of the gas is 5.00 L at 0.500
atm pressure. The piston is moved to increase the volume to 3.00 L. Which of the
following is a reasonable value for the pressure of the gas at the greater volume?
Answer:
0.8333 L. P1v1=p2v2
Explanation:
I dont now if this is wht you were looking for so srry
The pressure of the gas at which the final volume of the gas has been 3 L has been 0.833 atm.
The gas has been assumed to be at constant temperature. The change in the pressure and volume of gas at constant temperature can be given by:
Initial pressure × Initial volume = Final pressure × Final volume
The initial pressure of gas has been 0.5 atm, and the initial volume has been 5L. The increased volume or final volume of the system has been 3 L.
The final pressure of the gas has been given by:
0.5 atm × 5 L = 3 L × Final pressure
Final pressure = 0.833 atm.
The pressure of the gas at which the final volume of the gas has been 3 L has been 0.833 atm.
For more information about the pressure of the gas, refer to the link:
https://brainly.com/question/6534127
What is the molarity of a 4.447 L solution
that is made from 13.53 g of NaCl?
Answer in units of M.
Answer:52M
Explanation:
use S= 1000w/ MV
Here, s= molarity
w= the amount of NaCl
M= the atomic mass of NaCl
V= the volume of solution
Between which two objects is gravitational attraction the greatest?
between the penny and the small pot
between the book and the cereal box
between the small pot and the book
between the paper clip and the penny
Answer:
Between the small pot and the book
Explanation:
Since gravitational force is influenced by the mass of an object, the higher the mass of two objects, the stronger the gravitational force.
Thus, the force between the pot and the book is strongest, since the two have the highest mass.
Have a nice day!
what statement is true?
A. interia causees bodies to slow in their motion, unless they're pushed by a force.
B. Interia resist changes to the state of motion of a body.
C. Interia decelerates a body.
D. Interia is due to friction.
Answer:
B. Inertia resist changes to the state of motion of a body.
Explanation:
The force of inertia is an inherent property of matter in which it allows a body to resist changes to the state of motion of the body.
According to Newton's first law of motion "a body will remain at rest or in constant motion unless if an external force acts on it".
This is the law inertia.
The ability of a body to resist changes to the motion of the body is its inertia. Therefore, the correct choice is B.neon, a monatomic gas, that starts out at conditions of standard temperature and pressure (273.15 K, 105 Pa). Alice heats the gas at constant volume until its pressure is doubled, then Bob further heats the gas at constant pressure until its volume is doubled. If Alice and Bob assume that neon behaves as an ideal gas, then how much heat have they added to the gas for the entire process.
Answer:
819.45 K
Explanation:
Use the Ideal Gas Law to make sense of this problem, PV = nRT. From this equation, we know that pressure is directly proportional to temperature and that volume is also directly proportional to temperature. Therefore, doubling the temperature would double the pressure, and doubling the temperature would also double the volume. In the described scenario, the temperature is doubled twice, so the temperature is quadrupled (i.e. three times its original amount has been added).
The initial temperature was 273.15 K. Multiply this by 3 to get your answer of 819.45 K.
Salt is poured from a container at 10 cm³ s-¹ and it formed a conical pile whose height at any time is 1/5 the radius of the above. At what rate is the height of the cone increasing when the height is 2 cm form the base of the cone?
Answer:
[tex]\displaystyle \frac{dh}{dt} = \frac{1}{10 \pi}[/tex]
Explanation:
Volume of a cone:
[tex]\displaystyle V=\frac{1}{3} \pi r^2 h[/tex]We have [tex]\displaystyle \frac{dV}{dt} = \frac{10 \ cm^3}{sec}[/tex] and we want to find [tex]\displaystyle \frac{dh}{dt} \Biggr | _{h\ =\ 6}= \ ?[/tex] when the height is 2 cm.
We can see in our equation for the volume of a cone that we have three variables: V, r, and h.
Since we only have dV/dt and dh/dt, we can rewrite the equation in terms of h only.
We are given that the height of the cone is 1/5 the radius at any given time, 1/5r, so we can write this as r = 5h.
Plug this value for r into the volume formula:
[tex]\displaystyle V =\frac{1}{3} \pi (5h)^2 h[/tex] [tex]\displaystyle V =\frac{1}{3} \pi \ 25h^3[/tex]Differentiate this equation with respect to time t.
[tex]\displaystyle \frac{dV}{dt} =\frac{25}{3} \pi \ 3h^2 \ \frac{dh}{dt}[/tex] [tex]\displaystyle \frac{dV}{dt} =25 \pi h^2 \ \frac{dh}{dt}[/tex]Plug known values into the equation and solve for dh/dt.
[tex]\displaystyle 10 = 25 \pi (2)^2 \ \frac{dh}{dt}[/tex] [tex]\displaystyle 10 = 100 \pi \ \frac{dh}{dt}[/tex]Divide both sides by 100π to solve for dh/dt.
[tex]\displaystyle \frac{10}{100 \pi} = \frac{dh}{dt}[/tex] [tex]\displaystyle \frac{dh}{dt} = \frac{1}{10 \pi}[/tex]The height of the cone is increasing at a rate of 1/10π cm per second.
When you lift an object, you add the energy of lifting the object to the object
Answer:
Which is kinetic energy at its best, cause you are moving your arm or hand in motion, bu the object is in potential energy, where it isn't moving
Explanation:
Can anyone please tell me what I did wrong and why the answer I put was wrong, and why the answer that is correct, right? Giving Brainliest, PLEASE help!
Answer:
Lithium is reduesednas it gains electrons gold
Answer:
Look at Lithium on the Periodic Table, look at the amount of electrons. When Lithium and Gold are together, Lithium loses while Gold(Au) gains.
If you have 10 grams of Aluminum and a 500 gram Aluminum bottle with different volumes. Explain why the density will be the same.
what are the functional groups in tramadol
Answer:
1. ether group R-O-R
2. benzene ring
3. 3°- alcohol
4.3°- amine group N attached to 3 groups rather than H
even about the food chain is correct?
Answer:
its C, because the cocunut tree gets energy from the sun and makes it into cocunut that is true
Explanation:
its C, because the cocunut tree gets energy from the sun and makes it into cocunut that is true
compare the amount of heat required to vaporize 200 gram sample of h2o at its boiling point to the amount of heat required to melt 200 gram sample of h2o at its melting point
Answer:
The enthalpy of vaporization of H2O is higher than the enthalpy of fusion of H2O, therefore vaporizing the same mass of H2O would require more heat/energy than melting the same mass of H2O.
hope it helps!
How can a galvanic cell become an electrolytic cell?
A. The cathode is oxidized.
B. The salt bridge is removed.
C. The electrolytes are swapped.
D. The redox reaction is reversed.
(The answer is D.)
2.55 gram of an alloy of silver and zinc on treatment with excess dilute hydrochloric acid gave 170 CC Of
hydrogen gas of STD. If silver remained unsolved calculate the percentage Composition of the alloy .
( Alamic masses of Zn: 65, H:1)
The percentage composition of the alloy : 19.35% Zn, 80.65%Ag
Further explanationGiven
2.55 gram of an alloy
170 cc (170 ml=0.17 L) of Hydrogen gas(H₂)
Ar Zn = 65. H=1
Required
The percentage composition
Solution
Silver remained unsolved⇒no reaction
Hydrogen gas from reaction of Zn
Zn+2HCl⇒ZnCl₂ + H₂
mol H₂ at STP (STP⇒1 mol = 22.4 L) :
[tex]\tt \dfrac{0.17}{22.4}=0.00759~moles[/tex]
From equation, mol ratio Zn : H₂ = 1 : 1, so mol H₂ = 0.00759
Mass Zn :
[tex]\tt mass=mol\times Ar\\\\mass=0.00759\times 65\\\\mass=0.49335~g[/tex]
Mass Silver :
[tex]\tt 2.55-0.49335=2.05665~g[/tex]
Percent composition :
Zn[tex]\tt \dfrac{0.49335}{2.55}\times 100\%=19.35\%[/tex]
Ag[tex]\tt \dfrac{2.05665}{2.55}\times 100\%=80.65\%[/tex]
how many grams of water can be produced the combination of 10 grams of oxygen and 8 grams of hydrogen
Answer:
Mass = 11.16 g
Explanation:
Given data:
Mass of hydrogen = 8 g
Mass of oxygen = 10 g
Mass of water produced = ?
Solution:
Chemical equation:
2H₂ + O₂ → 2H₂O
Number of moles of hydrogen:
Number of moles = mass / molar mass
Number of moles = 8 g/ 2 g/mol
Number of moles = 4 mol
Number of moles of oxygen:
Number of moles = mass / molar mass
Number of moles = 10 g/ 32 g/mol
Number of moles = 0.31 mol
now we will compare the moles of hydrogen and oxygen with water.
O₂ : H₂O
1 : 2
0.31 : 2/1×0.31 = 0.62
H₂ : H₂O
2 : 2
4 : 4
Number of moles of water formed by oxygen are less this it will act as limiting reactant.
Mass of water:
Mass = number of moles × molar mass
Mass = 0.62 mol × 18 g/mol
Mass = 11.16 g
`Acids have many useful properties that can be exploited for our own benefit. They are commonly used to make many things that we use. For example, which of these is associated with making fertilizer?
Answer:
HNO3
Explanation:
HNO3 is nitric acid. Nitric acid as a compound contains Hydrogen, Nitrogen and Oxygen molecules, therefore its chemical formula is HNO3. Very useful for fertiliser and chemical making. This acid can be manufactured from ammonia and it is a very important chemical that is used for manufacturing fertilizers.
Nitric acid is useful for the manufacturing of ammonium nitrate and calcium ammonium nitrate which have uses as fertilizers.
PLS HELP WILL GIVE BRAINLYEST What happens when the magnet is removed from the coil in a circuit?
a.
The current stops
c.
The voltage decreases
b.
The current changes direction
d.
Power output increases
Answer:
b
Explanation:
Can someone please help me with my science research I kind of need help in a few things that I listed, I’m currently working on this element which is called Curium if anyone can help me out please do, thanks. Anyway here’s the questions:
Where can it be found?
What is its importance? What are its uses?
Answer:
For your first question, Curium does not occur naturally on Earth, meaning that it is not produced naturally on Earth. However, it can be formed in nuclear reactors.
For your second question, Curium has been used to provide power to electrical equipment used on space missions, but doesn't seem to be that important overall.
Explanation:
Hope this helped!
g The energy associated with the lowest n = 1 state in a hydrogen atom is – 13.6 eV. The wavelength of the emission line corresponding to the transition from n = 4 to n = 3 is
Answer:
10.9 * 10^-7 m
Explanation:
We know that the Rydberg constant (R) is – 13.6 eV = -2.18 * 10^-18 J
ΔE= -R(1/nf - 1/ni)
Where;
nf = final state
ni= initial state
ΔE= -2.18 * 10^-18(1/3 - 1/4)
ΔE= -2.18 * 10^-18(1/12)
ΔE= -1.81 * 10^-19 J
From;
ΔE=hc/λ
h = plank's constant = 6.6 * 10^-34 Js
c = 3 * 10^8 ms-1
λ = ?
λ = hc/ΔE
λ = 6.6 * 10^-34 * 3 * 10^8/ 1.81 * 10^-19
λ = 10.9 * 10^-7 m
A sample of nitrogen gas is in a 65.0-L automobile air bag and has a pressure of 745 mm Hg. What is the pressure of this sample of gas at the same temperature if it is placed into a 25.0-L bag
Answer:
the pressure = 1937mmhg using standered unit of volume
write five characteristics of good government?
Explanation:
giving equal opportunity,making good governance, maintaining peace and harmony among people, other try to write by your self
how mant liters at STP are in 0.575 moles of Kr
Answer:
12.9 L Kr
General Formulas and Concepts:
Chemistry - Gas Laws
Using Dimensional AnalysisSTP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 KExplanation:
Step 1: Define
0.575 mol Kr
Step 2: Identify Conversions
1 mol= 22.4 L at STP
Step 3: Convert
[tex]0.575 \ mol \ Kr(\frac{22.4 \ L \ Kr}{1 \ mol \ Kr} )[/tex] = 12.88 L Kr
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
12.88 L Kr ≈ 12.9 L Kr
please I need this just look at the picture for the question
What is the mass of Na2CO3∙10H2O that is needed to make 100 ml of sodium carbonate solution with the mass percentage of Na2CO3∙ equal to 2%? The density of the final solution is equal to 1 g/ml.
first we find the mass of the final solution
we know that
density=mass/volume
we know the density and volume
1=m/100
m=100g
now we calculate the mass ofNa2CO3
2% of 100 is equal with 2g of Na2CO3