The statement that best explains why xenon has a higher boiling point than neon is that xenon has more electrons than neon.
What are intermolecular forces?The term intermolecular forces are the force that hold matter together in a particular state such as solid liquid or gas. The more the electrons present, the greater the polarizability and the greater dispersion forces at work.
Thus, the statement that best explains why xenon has a higher boiling point than neon is that xenon has more electrons than neon.
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1. If the pressure of a fixed volume of gas decreased in a sealed container, what variable would you think changed? did this variable increase or decrease?.
Answer:
Temp decreased
Explanation:
If the container is sealed and the pressure DEcreases, then the temperature DEcreased
PV = n RT n R V are constant if P goes down then so does T
how do electrostatic forces affect the electrons in an atom?
Answer:
allows the atoms of different elements to bond together to form new substances
The negatively charged electrons are held together by electrostatic force by the positively charged atomic nucleus.
What is electrostatic forces?Electrostatic forces are non-contact forces that pull or push on objects without contacting them.
The positively charged atomic nucleus holds the negatively charged electrons together with electrostatic force.
Thus, in this way electrostatic forces affect the electrons in an atom.
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Including soluble fiber into your diet can __________.
A. digest amino acids
B. digest cellulose
C. raise cholesterol levels
D. lower cholesterol levels
Answer:
The answer is D.
Explanation:
Including soluble fiber into your diet can lower cholesterol levels.
How to draw ethyl pentanoate?
A 80.0 mL sample of nitrous acid of unknown concentration is titrated with 36.2 mL of 1.45 M barium hydroxide. Determine the concentration of the acid solution.
Answer: 0.66 M
Explanation:
[tex]M_{A}V_{A}=M_{B}V_{B}\\(80.0)M_{A}=(36.2)(1.45)\\M_{A}=\frac{(36.2)(1.45)}{80.0} \approx \boxed{0.66 \text{ M}}[/tex]
A gas at STP is heated to 35 degrees
C. What is the new pressure of the gas?
A gas at STP is heated to 35 degree C. The new pressure will be 2.41 atm.
What is Gay-Lussac law?The pressure of the mass of the gas is directly proportional; to the temperature of the gas.
[tex]\dfrac{P_1 }{T_1} =\dfrac{P_2}{T_2}[/tex]
Converting the temperature into kelvin
The initial temperature = 35 °C = 35 + 273 K= 308 K
The final temperature = 50 °C =50 + 273 K = 323 K
Initial pressure = 2.3 atm
Final pressure ?
Putting the values in the equation
[tex]\dfrac{P_1 }{T_1} =\dfrac{P_2}{T_2}\\\\\\{P_2 = \dfrac{P_1 \times T_2}{T_1} \\\\\\\\\\{P_2 = \dfrac{2.3 \times 323 }{308} = 2.41 atm.[/tex]
Thus, the new pressure will be 2.41 atm.
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The volume of a gas is 6.10 l, measured at 1.50 atm. what is the pressure of the gas in
mmhg if the volume is changed to 9.74 l?
Answer:
713.96mmhg
Explanation:
p1v1=p2v2
6.10×1.50/9.74
=0.939atm
=0.939*760
=713.96mmhg
How many moles of Unknown weak acid (HA) in a 100L solution are required to produce a solution with PH =2 ? Ka of the Unknown weak acid (HA)=5x10⁻³
a. 3x10⁻³
b. 0.3x10⁻³
c. 3
d. 0.3
The moles of unknown weak acid (HA) in a 100L solution are required to produce a solution with pH 2 is 0.002 moles.
What is the equation of the acid dissociation constant, Ka?The acid dissociation constant of an acid is given by the formula below:
[tex]K_a= \frac{[A^{-}][H_3O^{-}]}{[HA]}[/tex]
Where
Ka = 5x10⁻³ pH = 2[H3O+] = 10^-2Volume of solution = 100 mL or 0.1 LSince, the Ka is given at equilibrium concentrations, [H3O+] = [A-]
[A-] = 10^-2
Making [HA] subject of the formula:
[tex][HA]= \frac{[10^{-2}][10^{-2}]}{5 \times 10^{ - 3} } = 0.02[/tex]
Moles of acid = 0.1 × 0.02 = 0.002 moles
Therefore, the moles of unknown weak acid (HA) in a 100L solution are required to produce a solution with pH 2 is 0.002 moles.
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A wave is created by causing vibrations in particles of matter. Which
statement about the wave is true?
The wave which is created by causing vibrations in particles of matter is a mechanical wave.
What is a wave?A wave is a disturbance in a medium which transmits transmits energy from one point to another without a permanent displacement of the particles of the medium.
Types of waves include:
electromagnetic wavesmechanical wavesMechanical waves are waves which are produced as a result of the vibrations of the particles of the medium.
Therefore, the wave which is created by causing vibrations in particles of matter is a mechanical wave.
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how many grans of NaoH Are needed to neutralize grans of H2So4
Answer :]
to convert from g NaOH to mol NaOH. = 1.48 g NaOH are needed to neutralize the acid.
The chart above shows the relationship between the first ionization energy and the increase in atomic number. The letter on the chart for the alkali family of elements is
A. W
B. X
C. Z
D. Y
What is the mass in grams of each of the following?
a.) 6.02 x 1024 atoms Bi
c.) 6.02 x 1022 atoms He
e.) 6.02 x 10¹5 atoms U
b.) 1.00 x 1024 atoms Mn
d.) 6.02 x 10¹5 atoms N
Answer:
a. 208g Bi
c. 0.0400g He
e. 2.38g U
b. 9.12g Mn
d. 1.40g N
Explanation:
I apologize in advance if any are incorrect. Hopefully this helps.
According to the postulates of kinetic molecular theory, which statement describes the movement of the particles of a liquid?
According to the postulates of kinetic molecular theory, the particles of a liquid are close together and are in constant random motion.
What is the Kinetic theory of matter?The Kinetic theory of matter states that all forms of matter are made up of tiny particles which possess kinetic energy and are in constant state of motion.
The strength of the forces keeping the particles together determines the state in which that substance exists in.
For liquids, the intermolecular forces of attraction between between the molecules are not very strong, and as such, the particles of a liquid are in constant state of random motion.
Therefore, according to the postulates of kinetic molecular theory, the particles of a liquid are close together and are in constant random motion.
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During dehydration synthesis, an enzyme removes a ____________ functional group from the monomers of one organic molecule and a hydrogen from another monomer, linking monomers together to form a ____________ . This chemical reaction also forms ____________ .
Linking monomers together to form a polymer .This chemical reaction also forms water molecules.
What is Polymerization?This is a type of reaction which involves the linking of two or more monomers to form a polymer.
Dehydration reaction forms water molecules as part of the product thereby making it the most appropriate choice.
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Emmett is lifting a box vertically. Which forces are necessary for calculating the total force?
Fp, Ff, and Fg
Fp and FN
Fp, FN, and Ff
Fp and Fg
Emmett is lifting a box vertically. The forces that are necessary for calculating the total force is Fp and Fg. The correct option is D.
What is force?Force is an influence or strength that is used to initiate an action or movement. There are total eight types of forces are present.
Fp is the applied force and Fg is the force of gravitation, if Emmett is lifting a box vertically, these force will be applied
Thus, the correct option is D, Fp and Fg.
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Answer:
D
Explanation:
Edge 2022
31. calculate the amount of energy released as heat by the freezing of 13.3 g of a liquid substance, given that the substance has a molar mass of 82.9 g/mol and a molar enthalpy of fusion of 4.60 kj/mol.
From the calculations, the heat of fusion of the substance is 0.73 kJ
What is is the heat of freezing?The heat of freezing is the energy released when the substance is converted from liquid to solid.
Now we know that the molar mass of the substance is 82.9 g/mol hence the number of moles of the substance is; 13.3 g /82.9 g/mol = 0.16 moles
Now the heat of fusion shall be;
H = 4.60 kj/mol * 0.16 moles
H = 0.73 kJ
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what are the advantages of wind energy/fuel?
have complete details and also add the disadvantages
Answer:
Advantages of Wind Energy -
Free , clean , unlimited fuel . One of the Cleanest Forms of Energy · Advances in Technology · Doesn't Disrupt Farmland Operations ·5) Reduces Our Dependence of Fossil FuelsDisadvantages of Wind Energy-
Dangerous to Some Wildlife NoisyExpensive Upfront CostUnreliable/Unpredictablehttps://justenergy.com/blog/wind-energy-pros-and-cons/
hope this site might help you with the details
Would the following be an example of a physical or a chemical change?
- Methane (natural gas) is combined with oxygen to produce heat.
Select one:
a. chemical
b. physical
c. neither
it is chemical change because chemical change occur when bonds are broken or formed between molecules or atoms.
Which word equation shows hydrogen reacting with oxygen to form water?
oxygen + water → hydrogen
hydrogen + oxygen → water
oxygen + water hydrogen + water
→
Ohydrogen + water →→ oxygen
Answer:
calcule o PH e POH de 2,625g de HCLO em 2000cm3 (cl=35,5)
Explanation:
The word chemical equation which hydrogen reacting with oxygen to form water is hydrogen + oxygen → water.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.
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What is the mass number of an isotope with an atomic number of 57 and that has 69 neutrons?
Answer:
mass number=126
Explanation:
57+69=126
Suppose that 5-ml containers of helium (He), neon (Ne), and argon (Ar) are at pressures of 1 atm,
2 atm, and 3 atm, respectively. The He and Ne are then added to the container of Ar.
a. What is the partial pressure of He in the container after the three gases are mixed?
b. What is the total pressure in the container after the three gases are mixed?
The total pressure in the container after the three gases are mixed is 6 atm and the partial pressure of He is 1 atm.
What is Dalton's Law of Partial Pressure ?According to Dalton's Law of Partial Pressure , the pressure exerted by a mixture of gas is equal to the sum of the partial pressure of the gases in the mixture.
P(total) = p₁ +p₂+p₃+.....
As the volume of the containers are same and the
n = 1*5/RT for Helium
n = 2*5 /RT for Neon
n= 3*5/RT for Argon
Mole fraction = moles of the element/Total moles
Moles fraction of Helium is
[tex]\rm \dfrac{1*5}{1*5+2*5+3*5}[/tex]
= 1/6
Total Pressure in the container = 1 + 2 +3 = 6 atm
The partial pressure of Helium will be
=Mole fraction * Total pressure
=(1/6)*6 atm
= 1 atm , as the volume is same the temperature is same , the pressure will also be same.
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2. calcium reacts with oxygen to produce calcium oxide what is the :reactant' :products' and chemical equation" of this problem
Answer:
Calcium reacts with Oxygen to form Calcium Oxide
Explanation:
Reactant: Calcium reacts with Oxygen to form Calcium Oxide
Products: Calcium + Oxygen
Chemical equation: Ca + 02> CaO
The pressure of x ml of a gas was increased from 2 atm to 4 atm at constant temperture. what will be the new volume?
The new volume of the gas given the data from the question is 1/2X mL
Data obtained from the question
Initial volume (V₁) = X mL
Initial pressure (P₁) = 2 atm
New pressure (P₂) = 4 atm
New Volume (V₂) = ?
How to determine the new volume
The new volume of the gas can be obtained by using the Boyles’ law equation as illustrated below:
P₁V₁ = P₂V₂
2 × X = 4 × V₂
2X = 4V₂
Divide both side by 4
V₂= 2X / 4
V₂ = 1/2X mL
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What happens when an electron absorbs photons? OA. It changes into a neutron and falls into the nucleus. B. It moves to a higher energy level. OC. It changes into an alpha particle and is ejected from the atom. OD. It falls to a lower energy level.
When an electron absorbs photons it moves to a higher energy level.
What happens when an electron absorbs photons?
Absorption of photons occurs when electrons in a given state absorb photons which causes them to gain energy and jump to higher energy levels.
The electrons will move to higher energy level because they have acquired more energy.
Thus, when an electron absorbs photons it moves to a higher energy level.
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using are organic compounds made by living things
Answer:
The chemical compounds of living things are known as organic compound because of their association with organisms and because they are carbon-containing compounds, which are the compounds associated with life processes, are the subject matter of organic chemistry
Match the following terms:
Answer:
See below ~
Explanation:
A to B
⇒ Solid Phase
==========================================================
B to C
⇒ Melting
==========================================================
C to D
⇒ Liquid Phase
==========================================================
D to E
⇒ Vaporizing
============================================================
E to F and beyond
⇒ Gas Phase
How many moles are 3.20 x102 formula units of calcium iodide?
The number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.
How to calculate number of moles?The number of moles in the formula units of a substance is calculated by dividing the formula unit by Avogadro's number.
According to this question, 3.20 x 10² formula units are in calcium iodide. The number of moles is as follows:
no of moles = 3.20 x 10²² ÷ 6.02 × 10²³
no of moles = 0.53 × 10-¹
no of moles = 0.053 moles
Therefore, the number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.
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Sample Response: Forces are either positive or negative vectors, depending on the direction in which the force is acting. The net force is the sum of all of the forces acting on an object. If the children pull on the toy with the same force in opposite directions, the forces will be perfectly balanced and cancel out, leaving a net force of zero.
What did you include in your response? Check all that apply.
Forces are vectors.
Forces can be positive or negative.
The forces exerted by the children are in balance.
The net force is the sum of all of the forces that canceled out to zero.
The net force is the sum of all of the forces that cancelled out to zero. Hence, option D is correct.
What is force?The pushes or pulls on an object with mass causes it to change its velocity.
The net force is the vector sum of all forces acting on an object. Force is a vector quantity.
Two forces of equal magnitude when acting on an object in opposite directions will cancel out each other.
As a result net force is equal to 0. The word net here shows the total force acting on the object.
Hence, option D is correct.
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What is force?
The pushes or pulls on an object with mass causes it to change its velocity.The net force is the vector sum of all forces acting on an object. Force is a vector quantity. Two forces of equal magnitude when acting on an object in opposite directions will cancel out each other. As a result net force is equal to 0. The word net here shows the total force acting on the object.Hence, option D is correct.
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Which describe beta decay? check all that apply. in beta decay, a proton becomes a neutron and a positron. in beta decay, a neutron becomes a proton and an electron. in beta decay, a neutron becomes a proton and a gamma ray. beta decay releases energy. beta decay releases a helium-4 nucleus.
The statements which best describe beta decay are: option 1, 2 and 4.
What is a beta particle?A beta particle can be defined as an isotope which typically undergoes radioactive decay through the emission of a radiation with a -1 charge.
Based on scientific information and records from radioactivity, we can infer that the statements which best describe beta decay are:
During beta decay, an atom of proton becomes a neutron and a positron. During beta decay, an atom of neutron becomes a proton and an electron.Beta decay releases energy.Read more on beta decay here: https://brainly.com/question/12448836
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Answer:
1,2,4
Explanation:
How can you measure the volume of air inside of a balloon?
You could let the air out of the balloon while it is under the water with a container filled with water upside down over it. And measure the water displacement.