Explanation:
P1V1 = nRT1
P2V2 = nRT2
Divide one by the other:
P1V1/P2V2 = nRT1/nRT2
From which:
P1V1/P2V2 = T1/T2
(Or P1V1 = P2V2 under isothermal conditions)
Inverting and isolating T2 (final temp)
(P2V2/P1V1)T1 = T2 (Temp in K).
Now P1/P2 = 1
V1/V2 = 1/2
T1 = 273 K, the initial temp.
Therefore, inserting these values into above:
2 x 273 K = T2 = 546 K, or 273 C.
Thus, increasing the temperature to 273 C from 0C doubles its volume, assuming ideal gas behaviour. This result could have been inferred from the fact that the the volume vs temperature line above the boiling temperature of the gas would theoretically have passed through the origin (0 K) which means that a doubling of temperature at any temperature above the bp of the gas, doubles the volume.
From the ideal gas equation:
V = nRT/P or at constant pressure:
V = kT where the constant k = nR/P. Therefore, theoretically, at 0 K the volume is zero. Of course, in practice that would not happen since a very small percentage of the volume would be taken up by the solidified gas.
What happens to rock during subduction please help I will give you Brainlyest
Answer: Here is the answer!! :)
Explanation:
A subduction zone is a region of the earth's crust where one tectonic plate moves under another tectonic plate; oceanic crust gets recycled back into the mantle and continental crust gets created by the formation of arc magmas. ... This water lowers the melting point of mantle rock, initiating melting.
Here is a graph to understand it better!:)
SCIENCEEEE!!!! HELPPPPP MEEEE OUTTTT!!!!
pls help
1. Calculate the mass of iron needed to make 16.25g of iron chloride (3
marks)
2Fe + 3Cl2 → 2FeCl3
Explanation: 5.6g
the molars of FeCl3 is [tex]\frac{16,25}{56+35,5.3}= 0.1[/tex] (mol)
have:
2Fe + 3Cl2 ⇒ 2FeCl3
0.1 <= 0.1
=> the molars of Fe is 0.1 mol
=> the mass of Fe is 0,1.56 = 5.6 (g)
The mass of iron required to make 16.25g of iron chloride is 5.59 g.
What is the limiting reagent?A limiting reagent can be defined as a reactant that is fully exhausted from the reaction mixture at the completion of a reaction.
When reactants are not taken in stoichiometric quantities, the limiting reactant will decide the amount of product will be formed in a reaction from the reactants.
Given, a balanced chemical equation of the reaction between iron and chlorine is:
2Fe + 3Cl₂ → 2FeCl₃
Given, the amount of iron chloride = 16.25 g
The molecular mass of the iron chloride = 162.2 g/mol
The number of moles of iron oxide = 16.25/162.2 = 0.10 mol
2 moles of iron chloride produced from iron = 2mol
0.10 mol of iron chloride produced from iron = 0.10 mol
The mass of the iron required = 0.10 × 55.85 = 5.59 g
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The following reaction is a
reaction.
Answer:
??
Explanation:
How can you separate sand and sugar?
Answer:
1)Filtration to remove sand
2)Evaporation to obtain sugar
Explanation:
Add water to the mixture and mix,sugar will dissolve.
Filter out the sand.
Evaporate the remaining solution to obtain the sugar.
Can someone help me pls
If someone was falling through the sky, would time go faster or slower than someone on land?
Oxygen and sucrose chemical equation
O2 + C12H22O11 - ->
This is a combustion reaction and requires input energy. PLEASE HELP ME! It also needs to be balanced!
Answer:
11011111111111111111122
A balloon with a volume of 5.0 L is filled with a gas at 760 torr. If the pressure is reduced to 380 torr without a change in temperature, what will be the volume of the balloon?
Answer:
10 LExplanation:
The new volume can be found by using the formula for Boyle's law which is
[tex]P_1V_1 = P_2V_2[/tex]
Since we are finding the new volume
[tex]V_2 = \frac{P_1V_1}{P_2} \\[/tex]
From the question we have
[tex]V_2 = \frac{5 \times 760}{380} = \frac{3800}{380} = \frac{380}{38} \\ [/tex]
We have the final answer as
10 LHope this helps you
By applying Boyle's law, the final volume of this balloon is equal to 10,000 mL.
Given the following data:
Initial volume = 5.0 L.
Final pressure = 380 torr.
Initial pressure = 760 torr.
How to calculate the final volume?In order to determine the final volume of this balloon, we would apply Boyle's law.
Mathematically, Boyle's law is given by this formula:
PV = k
P₁V₁ = P₂V₂
Where:
P represents the pressure.V represents the volume.Making V₂ the subject of formula, we have:
V₂ = (P₁V₁)/P₂
Substituting the given parameters into the formula, we have;
V₂ = (760 × 5.0)/380
V₂ = 3800/380
V₂ = 10 L
In milliliters, we have:
1 L = 1000 mL
10 L = X mL
X = 1000 × 10
V₂ = 10,000 mL.
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When a drawing of a circle made in the center of a piece of paper with a black marker gets wet, the marker bleeds, and as the water moves through the paper the ink separates into several colors.
What method of separation does this describe?
evaporation
distillation
filtration
chromatography
Answer:
D) Chromatography
Explanation:
Answer: It is D. chromatography.
Step-by-step explanation:
when water or dye passes through a medium and changes color then that means it must be chromatography.
Consider the reaction Upper A u (upper O upper H) subscript 3 plus upper H upper I right arrow upper A U plus upper I subscript 2 plus upper H subscript 2 upper O.. Label the half-reactions as oxidation (use "O") or reduction (use "R"). 2 upper i right arrow upper I subscript 2 plus 2 e superscript minus. Upper A u superscript plus 3, plus 3 e superscript minus right arrow upper A u.
Answer:
2I- ---> I2 + 2e- = O
Au+3 + 3e- ---> Au = R
Explanation:
The first loses electrons, so it is Oxidized, and the second one gains electrons, so it is Reduced. (Also I just did this and saw the answers were O and R respectively)
Answer: o, r
Explanation:
i did the assignment on edge on 2022
Why is magnesium malleable?
Answer:
It is an Alkaline Earth Metal
Explanation:
Metallic bonding results from the delocalization of electrons from the parent metal atom so that positive ions are conceived to swim in a sea of electrons. This view of metallic bonding accounts for the malleability, and ductility of metals, as well as their properties of thermal and electrical conduction.
This app is for helping people so please help me with these 2 questions
Answer:
1. The organism becomes ill or may die.
2. Pathogens.
Explanation:
(1) When an organism fails to maintain homeostasis, the organism typically becomes ill, and they will die if homeostasis cannot be re-achieved.
(2) A pathogen is a virus that can cause diseases.
Barium chlorate (Ba(ClO3)2) breaks down to form barium chloride and oxygen. What is the balanced equation for this reaction? When counting atoms in parentheses multiply all subscripts by the number outside the parentheses to get the number of atoms
Answer:
C
Explanation:
The balanced equation for breakdown of barium chlorate into barium chloride and oxygen as follows: [tex]\rm 2 Ba(ClO_3)_2 \rightarrow 2 BaCl_2 + 3 O_2[/tex]
In chemistry, a balanced equation is one that depicts a reaction in which there are the same numbers of atoms of each element on both sides of the equation. The idea that matter is neither generated nor destroyed during a chemical reaction is known as the conservation of mass.
It is possible to write the equation for the balanced breakdown of barium chlorate into barium chloride and oxygen as follows: [tex]\rm 2 Ba(ClO_3)_2 \rightarrow 2 BaCl_2 + 3 O_2[/tex] . The number of atoms must be taken into consideration in this balanced equation by multiplying the subscripts inside brackets by the coefficient outside of the brackets. With the same number and kinds of atoms on both sides of the reaction, this guarantees that the equation complies with the rule of conservation of mass.
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Help!!
What shape would SeH2 have? Draw the molecule.
Also, if you are good with this kind of thing, please answer my other questions too!
How many molecules are in a mole 0.500 mile of N205
True or False:
C + 02 - CO2
In the chemical reaction above, the coefficient of oxygen is 2.
False
True
Check it
skip
Answer:
true the coefficient of oxygen is 2
Answer:
Explanation:
True
Heat rising in a hot-air balloon is an example of __________. (4 points)
a
conduction
b
convection
c
radiation
d
solar
Answer:
convection
Explanation:
hope it's useful to you
Please help me with this question please..
Answer:
Explanation:
Argon and neon are inertial gases. So, I would choose oxygen and chlorine
Answer:
the answer is oxygen and chlorine
When electricity is produced from coal the chemical energy in coal is changed to ___ energy
Answer: electrical energy
Explanation:
According to law of conservation of energy, energy remains conserved. It only transforms from one form to another.
Chemical energy is the energy stored in the bonds of molecules.
Electrical energy is the energy possessed by a body by virtue of movement of electrons.
Thus when When electricity is produced from coal the chemical energy in coal is changed to electrical energy
The moon has less gravity than we have here on Earth TRUE OR FALSE
Explanation:
obviously true the gravity of moon is 1/6th of the Earth
Rahul and Sonia were playing with blocks and each of them made a train out of them. Both of them thought of measuring the length of the train using their handspan. By that time Rahul's friend Anupam came and suggested they measure with a measuring tape for a fair result. (a) What is a handspan? (b) Why did Anupam ask both of them to use measuring tape? (c) Why a cubit cannot be used as the standard unit of length?
Answer:
See explanation
Explanation:
(a) The handspan is the distance between the tip of the thumb and tip of the little finger when the hand is fully stretched.
b) It is impossible for them to obtain an accurate result by the use of a handspan because it doesn't use any standard unit for measurement. It is entirely subjective and highly prone to human errors.
c) Anupam is quite intelligent and active
a) A handspan refers to the actual distance between the tip of the thumb
and tip of the little or last finger when the hand is fully stretched. It is
sometimes used in taking measurements of an object.
b) Anupam ask both of them to use measuring tape because the use of
handspan in taking measurement because:
It lacks the standard readings/markings which a measuring tape has as individuals don't have a uniform handspan.This therefore results to the measurements taken being inaccurate and error prone.c) Cubit can't be used as a standard unit of length because it varies in
individuals and is associated with the different heights present.
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Vinegar and milk forming solid clumps of solid (curds) is a
Change in temperature
Formation of gas/bubbles
Formation of precipitate
Release of energy (fire/light)
Change in color
Answer:
Formation of precipitate
Answer:
all of them are correct on EDGE
Explanation:
i just took the assignment
Use the tabulated half-cell potentials to calculate ΔG° for the following balanced redox reaction. Pb2+(aq) + Cu(s) → Pb(s) + Cu2+(aq)
Answer:
90.71 KJ
Explanation:
From the reaction equation, lead is the cathode while copper was the anode.
Hence;
E°anode = +0.34V
E°cathode = -0.13 V
E°cell =E°cathode - E°anode
E°cell = -0.13 V - 0.34V
E°cell = -0.47 V
But;
ΔG° = -nFE°cell
n= number of electrons transferred = 2
F = Faraday's constant = 96500 C
E°cell = -0.47 V
ΔG° = -(2 * 96500 * (-0.47))
ΔG° = 90,710 J or 90.71 KJ
The standard Gibbs free energy for the reaction
Pb²⁺(aq) + Cu(s) → Pb(s) + Cu²⁺(aq) is 89.3 kJ/mol.
Let's consider the following redox reaction.
Pb²⁺(aq) + Cu(s) → Pb(s) + Cu²⁺(aq)
We can identify both half-reactions.
Reduction (Cathode): Pb²⁺(aq) + 2 e⁻ → Pb(s) E°red = -0.126 V
Oxidation (Anode): Cu(s) → Cu²⁺(aq) + 2 e⁻ E°red = +0.337 V
We can calculate the standard potential of the cell (E°cell) using the following expression.
E°cell = E°red,cathode - E°red,anode = -0.126 V - 0.337 V = -0.463 V
The standard Gibbs free energy (ΔG°) is a way to measure the spontaneity of a reaction. We can calculate it using the following expression.
ΔG° = − n × F × E°cell =
ΔG° = − 2 mol × (96,485 J/V.mol) × (-0.463 V) × (1 kJ/1000 J) = 89.3 kJ/mol
where,
n are the moles of electrons involvedF is Faraday's constantSince ΔG° > 0, the reaction is not spontaneous.
The standard Gibbs free energy for the reaction
Pb²⁺(aq) + Cu(s) → Pb(s) + Cu²⁺(aq) is 89.3 kJ/mol.
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(help needed please)What is the approximate difference in elevation from point C to point D?
A) 400
B) 200
C) 1500
D) 1100
Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of attachment to show what is being referred to in the question. However, the difference in elevation from two points on the same "plane" can be calculated by subtracting the total distance from where the measurement started to point C from the total distance from where the measurement started to point D. Both measurements must have started from the same origin (usually zero).
A cat that weighs 55 N sits on the top of a cat tree. It is 2 m above a 110N dog. How does the mass of the animals relate to the force of gravity on them?
*sorry I can't give a full explanation.*
g = 9.8 m/s²
w = m*g
Weight of cat: 55 N = m*9.8
m = 5.61 kg
Weight of dog: 110 N = m*9.8
m = 11.22 kg
There is gravitational potential energy (GPE) acting on the cat since it's at the very top.
GPE of cat = m*g*h = 5.61*9.8*2 = 109.96 J
GPE of dog = m*g*h = 11.22*9.8*0 = 0 J (it's 0 m height because it's on the floor instead of in the tree)
But, if the dog was also 2 m up in the tree, its GPE would be 219.91 J.
As you can see, it's GRAVITATIONAL potential energy is bigger than the cat because it weighs more. Generally, if you were just trying to find the force which is w = m*g (since weight is a force), you would see that the bigger the mass, the bigger the force, and gravity stays the same.
Hope this helped
‼️PLS HELP SCHOOL IS A NIGHTMAREE‼️
Which electromagnetic waves have the shortest wavelength and the highest frequency?
______ waves
Answer:gamma rays
Explanation: your welcome
Which of the following pairs of elements would most likely combine to form a salt?
Ne and F
Ca and Cs
C And cl
Mg and cl
imma give BRAINEST TO EVER KNOW THIS SONG i aint took my change off in weeks if i tuck it they gon try to kill me anyway and im praying to the god of the streets (God of the streets way to big to discreet anyway hope i fly in the of my N.gga if u know this u the real OG and who is the rapper
Answer:
kevin gates with his fine self.
Explanation:
What 2 things define the state of matter?
Answer: gas are well separated with no regular arrangement.
liquid are close together with no regular arrangement.
solid are tightly packed, usually in a regular pattern.
its just gas liquid and solid pls make me brainliest
Explanation: