Answer:
Gjvb
Explanation:
Using the combined gas law equation as follows:
P1V1/T1 = P2V2/T2
Where;
P1 = initial pressure (kPa)
P2 = final pressure (kPa)
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to this question;
T1 = 300K
T2 = -73 + 273 = 200K
P1 = 303kPa
P2 = 202kPa
V1 = 2L
V2 = ?
Using the above formula:
303 × 2/300 = 202 × V2/200
606/300 = 202V2/200
Cross multiply;
606 × 200 = 300 × 202V2
121200 = 60600V2
V2 = 121200/60600
V2 = 2L
The new volume is 2L
What is the Sl unit for energy? Be sure to give the full name for the unit
Answer:
Joules
Explanation:
Mechanical energy is the total amount of and energy in a system. science
Answer:
Hey do you know if "horsleyjaydyn" is a girl you commented once she was a guy so
Explanation:
Rank the following compounds from weakest intermolecular forces to strongest. Justify your answers.
H2S I2 N2 H2O
Answer:
N2-non polar<i2< H2s-polar<H2o-polar
Explanation:
Potassium nitrate is a component of black powder and a fertilizer. Its chemical formula is KNO3. Potassium nitrate is obtained by neutralizing which acid and alkali?
Answer:
Synthesis of Potassium Nitrate (KNO3)
When potassium hydroxide neutralizes nitric acid potassium nitrate is formed.
Answer:
Below.
Explanation:
Nitric acid and potassium hydroxide:
HNO3 + KOH ---> KNO3 + H2O.
What do scientists think is responsible for this dramatic change in height? Cite evidence from the text to support your answer.
Answer:
Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization. Most of these climate changes are attributed to very small variations in Earth’s orbit that change the amount of solar energy our planet receives.
Explanation:
i might be right
1. Rank the following solutions in order of increasing
concentration: Solution A, 0.5 moles of sucrose
in 2.0 liters of solution; Solution B, 1.0 moles of
sucrose in 3.0 liters of solution; Solution C,
1.5 moles of sucrose in 4.0 liters of solution.
The order of the solutions from lowest to highest concentration : A, B, C
Further explanationGiven
the following solutions
Required
order of increasing concentration
Solution
Molarity shows the number of moles of solute in every 1 liter of solution.
[tex]\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}[/tex]
Solution A : 0.5 moles : 2 L solution = 0.25 M
Solution B : 1 moles : 3 L solution = 0.33 M
Solution C : 1.5 moles : 4 L solution = 0.375 M
Give examples of kinetic energy and how they work.
Answer: The kinetic energy of an object depends on both its mass and velocity, with its velocity playing a much greater role. Examples of Kinetic Energy: ... A baseball thrown by a pitcher, although having a small mass, can have a large amount of kinetic energy due to its fast velocity.
Explanation:
Hope this help
Use the following equation to answer the question below. How many moles of iron are made from 8.25 moles of Fe2O3?(see pic for equation)
what are the characteristics of temperature
A Temperature is a unit used to represent hotness or coolness on any of a number of scales, including Fahrenheit and Celsius. The direction that heat energy will spontaneously flow depends on temperature. It measures the average kinetic energy of the substances also.
The average kinetic energy of the particles in an object is measured by its temperature. The velocity of these particles likewise increases as the temperature rises. A thermometer or a calorimeter is used to determine the temperature.
Our weather is made up of several various elements, including temperature, cloudiness, wind speed, and the quantity and type of moisture in the air.
Thus temperature determines the weather and kinetic energy.
To know more about temperature, visit;
https://brainly.com/question/23411503
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Converting the following mm Hg (torr) to standard
atmospheric pressure (atm):
mmHg (torr)
20.5
78.6
225
answer: .027 .103 .295
Explanation:
Given:
20.5 torr
78.6 torr
225 torr
Change into atm
Computation:
We know that;
1 torr = 0.00131579 atm
So,
1. 20.5 torr
= 20.5 x 0.00131579 atm
= 0.02697
= 0.027 atm (Approx)
2. 78.6 torr
= 78.6 x 0.00131579 atm
= 0.103090
= 0.103 atm (Approx)
3. 225 torr
= 225 x 0.00131579 atm
= 0.2960
= 0.296 atm (Approx)
Help thanks thanks thanks
Answer:
the answer is (G)
Explanation:
It is G!
Your welcome!
PLS HELPPP
why is CH3OH more polar than CH3CH2OH
Answer:
Explanation:
Polarity is about differencens in electronegativity. CH bonds have around the same electronegativity value so a CH bond is nonpolar. The more CH bonds there are in a molecule, the more nonpolar it is. Since CH3CH2OH has more carbon-hydrogen bonds than CH3OH, it is more nonpolar. With the same reasoning, since CH3OH has less CH bonds, it's more polar.
what does 'potable water' mean?
Answer:
Potable water, also known as drinking water, comes from surface and ground sources and is treated to levels that that meet state and federal standards for consumption.
Please help. Thank you:)
2 points
Which group of elements loses electrons most easily?
8 (8A)
1(1A)
7 (7A)
2 (2A)
Answer:
7 (7A)
Explanation:
If 42.68 ml of 0.43 M KOH is used to neutralize 18.40 ml of H, SO4, calculate
the concentration of the sulfuric acid solution.
Write the net ionic equation of this reaction
The concentration of the sulfuric acid : 0.499 M
The net ionic equation
2 OH ⁻(aq]+ 2 H ⁺ (aq] → 2 H ₂O (l]
Further explanationGiven
42.68 ml of 0.43 M KOH
18.40 ml of H2SO4
Required
the concentration of the sulfuric acid
the net ionic equation
Solution
Acid-base titration formula
Ma. Va. na = Mb. Vb. nb
Ma, Mb = acid base concentration
Va, Vb = acid base volume
na, nb = acid base valence
Input the value :
a=KOH, b= H2SO4
0.43 x 42.68 x 1 = Mb x 18.40 x 2
Mb = 0.499 M
The net ionic equation
Reaction
2KOH + H2SO4 → K2SO4 + 2H2O
2 K ⁺ (aq]+ 2 OH ⁻ (aq] + 2 H ⁺ (aq] + SO ₄²⁻(aq] → 2 K ⁺ (aq] + SO ₄²⁻(aq] + 2 H ₂ O (l]
canceled the spectator ions :
2 OH ⁻(aq]+ 2 H ⁺ (aq] → 2 H ₂O (l]
An ideal gas does not exist.
Answer:
an ideal gas does not exist except as a conceptual notion, an ideal. Physicists and chemists idealized the behaviour of real gases so that they could explain these phenomena. Under conditions of low pressure and high temperature, all gases behave like real gases, even gases such as UF6 .
Answer:
True
Explanation:
based on the activity series, what are the predicted products of this reaction?
Pt (s) + H2O (l) ----->
Answer:
dk
Explanation:
PLEASE HELP I don’t know how to do this
Moles of Iron : 1.01
Further explanationGiven
Reaction
Fe2O3 + 3CO → 2Fe + 3CO2
34 liters of CO
Required
moles of Iron
Solution
Assumed at STP
Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters / mol.
so for 34 L :
= 34 : 22.4
= 1.518 moles
From the equation, mol Fe :
= 2/3 x moles CO
= 2/3 x 1.518
= 1.01 moles
Which has the largest ionization energy, platinum or nickel?
How many moles are 3.21x10^28 moles of N2
Answer:
number of moles =
[tex]53.3 \times 10 {}^{3} mol[/tex]
Explanation:
here's the solution in attachment.
What element has 7 valence electrons and 4 electron shells
Answer:
Mn
Explanation: 4th shell so 4th row and count 7 from the left most column
Describe how innate behaviors and learned behaviors differ? If you tell me the answer i will give you a brainliest answer :)
Answer:
The difference between an innate behavior and a learned one is that innate behaviors are those an animal will engage in from birth without any intervention. Learned behavior is something an animal discovers through trial, error and observation.
Explanation:
Find the volume of a locker that is 30cm long, 40cm wide, and 200 cm high.
Answer:
V= L × W × H so the answer is 240,000
Is NO ionic or covalent
Does the following compound contain a polyatomic ion? CuCl2 *
Yes
No
Answer:
the answer is no
Explanation:
I don't no
Does anyone know this?
Answer:
Not balanced. There are different number of atoms on each side of equation.
Explanation:
Given balanced chemical equation:
Chemical equation:
3C₂H₄ + 3O₂ → 4CO₂ + 6H₂O
The equation is not balanced because umber of moles of C, H and O are not balanced. It consist of six moles of C, 12 moles of H and six moles of oxygen on left side of equation while on right side there are 4 moles of C fourteen moles of oxygen and twelve moles of hydrogen present.
Balanced chemical equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
Now the equation became balanced. There are two moles of carbon, four moles of hydrogen and six moles of oxygen are present on both side of equation.
A water molecule is held together by ___ covalent bonds,
meaning there are a total of __shared electrons in the
molecule.
2 covalent bonds
2 pairs or 4 electrons
Match the orbital to its diagram.
Answer:
s --- the round single circle
p --- the two lobes
d --- the four lobes
f --- complex shape
14. The chemical reaction shows the
production of sulfur trioxide.
2502 (9)+ O2 (g) 2503 (9)
Which of the following reactant
quantities would make oxygen gas
the limiting reagent?
Answer:
Explanation:
Production of sulfur trioxide is O2 CO2
