H₂ will have the highest average kinetic energy
Further explanationEnergy because this motion is expressed as Kinetic energy (KE) which can be formulated as:
\(\tt \displaystyle KE=\frac{1}{2}mv^2\)
Average velocities of gases can be expressed as root-mean-square averages. (V rms)
\(\large{\boxed{\bold{v_{rms}=\sqrt{\frac{3RT}{Mm} } }}\)
R = gas constant, T = temperature, Mm = molar mass of the gas particles
From the two equations above, it can be concluded
KE is directly proportional to gas velocity Gas velocity is inversely proportional to molar massSo the highest KE is owned by the gas with the smallest molar mass
Molar mass of the gas :
A) H₂ : 2 g/mol
B) N₂ : 28 g/mol
C) O₂ : 32 g/mol
D) F₂ : 38 g/mol
So H₂ has the highest average kinetic energy
At a constant temperature: E. All the gases will have the same average kinetic energy.
According to the kinetic-molecular theory, the average kinetic energy of gas molecules (particles) is highly dependent on temperature.
Hence, the average kinetic energy of gas molecules (particles) is directly proportional to the absolute temperature of the gas.
At a constant temperature, all gases would have the same average kinetic energy according to the kinetic-molecular theory of gases.
In conclusion, all the gases would have the same average kinetic energy since the temperature is constant.
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Do you think mouse offspring will always look like their parents
Answer:No
Explanation
a ___ weather front forms when a warm air mass pushes into a cooler air mass
a) cold
b) warm
c) stationary
Answer:
b) warm
Explanation:
A warm weather front forms when a warm air mass pushes into a cooler air mass. Therefore, the answer is b) warm.
I'm sorry to bother you but can you please mark me BRAINLEIST if this ans is helpfull
Draw a structural formula for the major product of the reaction shown.
Draw a structural formula for the major product of the reaction shown:
The structural formula for the major product (2-butene) of the given reaction is as follows:$$\ce{CH3CH2CH=CH2}$$
The given reaction is an acid-catalyzed dehydration reaction.
During the reaction, the hydroxyl group (OH) and the adjacent hydrogen atoms (H) on the reactant alcohol (2-butanol) undergo dehydration (loss of water) to form an alkene (2-butene) as the major product.
The reaction is shown below:$$\ce{CH3CH2CH2CH2OH + H2SO4 ->[\Delta] CH3CH2CH=CH2 + H2O}$$To draw the structural formula for the major product of the given reaction, we need to consider the following points:
1. The reactant alcohol (2-butanol) is a four-carbon alcohol with the hydroxyl group (OH) attached to the second carbon atom (C2) of the chain.
2. The product alkene (2-butene) will be a four-carbon alkene with a double bond between the second and third carbon atoms (C2 and C3) of the chain.
The other two carbon atoms will have a single bond with the adjacent carbon atoms and a hydrogen atom each attached to them.
3. The major product will be formed via the elimination of water (dehydration) between the hydroxyl group (OH) and the adjacent hydrogen atoms (H) on the second carbon atom (C2) of the reactant alcohol (2-butanol).
4. The acid catalyst (H2SO4) does not participate in the reaction and remains unchanged. It only facilitates the formation of the alkene by providing a proton (H+) to the hydroxyl group (OH) and a medium for the elimination of water.
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5. When it is winter in Japan, what season is it in Australia?
Answer:
i think its the exact opposite so summer
In which phase of cellular respiration is oxygen a substrate ?
Answer:
electron transport 11 is the correct answer
A student conducted three trails to determine the concentration of an unknown concentration of HCI. In the first trail the calculated concentration was 0.104 M, the second was 0.113 M and the third trail was 0.108 M. What is the percent difference between the first two trials and based on the lab procedures procedures guidelines what would the average molarity be?
The percent difference between the first two trials is 8.3% and final outcome would be an average molarity of 0.108 M.
How to calculate percent difference and average molarity?To calculate the percent difference between the first two trials, use the formula:
% Difference = |(Value 1 - Value 2) / ((Value 1 + Value 2) / 2)| x 100%
% Difference = |(0.104 M - 0.113 M) / ((0.104 M + 0.113 M) / 2)| x 100%
% Difference = |-0.009 M / 0.1085 M| x 100%
% Difference = 8.3%
The percent difference between the first two trials is 8.3%.
To find the average molarity, add the three calculated concentrations together and divide by the number of trials:
Average Molarity = (0.104 M + 0.113 M + 0.108 M) / 3
Average Molarity = 0.108 M
Based on the lab procedures guidelines, the average molarity would be the most accurate representation of the unknown concentration of HCI. Therefore, the average molarity of 0.108 M would be the final result.
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What you observe when bromine is added into pottasium iodide solution
The final observation is that Iodine is deep-brown in color and is formed from a Single-Displacement reaction.
The substitution reaction is another name for the single displacement reaction. To create a new chemical compound in this reaction, one atom or molecule displaces or replaces the other atom or molecule.
Colorless metal halides are created when metals and halogens combine.
During an experiment, potassium iodide solution was mixed with bromine water.
Once bromine water is added to a potassium iodide solution, hydrobromic acid is generated as a result of the oxidation to iodate, which is characterized by a steep rise in conductivity and a reduction in pH.
After the test, it was observed that the potassium iodide solution, which had previously been colorless or clear, the solution's color changes to a shade of brown, which is the color of iodine.
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Answer: When bromine is added to potassium iodide solution, a slight change in the color of brown can be observed.
Explanation: Bromine is a powerful oxidizing agent and a displacement reaction of halogens occurs when it is added to potassium iodide. Ultimately, a reddish-brown solution appears.
For balanced equation between bromine and potassium iodide solution,
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On a phase diagram what does the triple point represent?
The conditions of the pressure and the temperature where all the phases coexists.
Explanations:A phase diagram is a diagram that shows the point where all the phases of matter coexists at equilibrium. This phase digram consists of the melting-freezing line, sublimation-deposition line and the
The point where all these lines coexists in equilibrium or intersects is known as the triple point.
he triple point is as marked in the diagram below;
30 example of redox reaction
HQ5.40
Homework Answered Due Today, 11:59 PM
The reaction 3H₂(g) + N₂(g) → 2NH3(g) has an enthalpy of reaction of -92.6 kJ/mol. If 1 g of hydrogen and 2 g of nitrogen are
reacted, how much heat is produced (kJ)?
The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ
How do i determine the heat energy produced?First, we shall obtain the limiting reactant. Details below:
3H₂ + N₂ -> 2NH₃
Molar mass of N₂ = 28 g/molMass of N₂ from the balanced equation = 1 × 28 = 28 g Molar mass of H₂ = 2 g/molMass of H₂ from the balanced equation = 3 × 2 = 6 gFrom the balanced equation above,
28 g of N₂ reacted with 6 g of H₂
Therefore,
2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂
We can see that only 0.43 g of H₂ is needed in the reaction.
Thus, the limiting reactant is N₂
Finally, we the amount of heat energy produced. Details below:
3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ
Molar mass of N₂ = 28 g/molMass of N₂ from the balanced equation = 1 × 28 = 28 gFrom the balanced equation above,
When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.
Therefore,
When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ
Thus the heat energy produced from the reaction is -6.61 KJ
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arrange the following group of atoms in order of increasing atomic size:B,Al,Ga
Answer:
Al,Ga,B
Explanation:
Now since i helped you can you help me with this plz
Matteo took 5 math quizzes. The mean of the 5 quizzes was 8.2. Here are four of his quiz scores 7, 7, 8, 10. What is the 5th quiz score? Show work.
Boron ( B )
Aluminium ( Al )
Gallium ( Ga )
i have it convert a number in scientific notation and it's asking me where should I move the decimal point
Answer: When converting from Scientific Notation to a standard or normal notation, use the value of the exponent to determine the number of places to move the decimal point. Move the decimal place to the right if the exponent is positive and move the decimal place to the left if the exponent is negative.
Explanation: I got this from a website but I still hope it helps!
Answer: if i were to convert a Scientific notation and it was 5.1³ then i would move the decimal point 3 times making it 5100 but if it were some thing like 5.123² you'd move the decimal 2 pts. making 512.3
Hexane burns according to the following equation:
2C6H14(g) + 19O2(g) ----------> 12CO2(g)+14H2O(g)
What volume of CO2 forms when 8.00 L of hexane burn, assuming the two volumes are measured under the same conditions? What volume of oxygen will be needed?
The volume of carbon dioxide gas forms is equal to 48 L and The volume of oxygen gas needed is 76 L.
What is the combustion reaction?A combustion reaction can be explained as a reaction that forms fire and takes place at a high temperature. Combustion Reaction is the combustion of hydrocarbon reacts with oxygen gas to give carbon dioxide and water molecules.
Given the chemical reaction of the combustion reaction of hexane:
\(2C_6H_{14}(g) + 19O_2(g) \longrightarrow 12CO_2(g)+14H_2O(g)\)
Given the volume of hexane = 8.00 L
The number of moles of hexane = 8/22.4 = 0.357 mol
The moles of oxygen required to react with 0.357 mol of Hexane is equal to :
= (19/2) × 0.357
= 3.39 mol
The volume of oxygen gas = 3.39 × 22.4 = 76 L
The moles of CO₂ produced from 0.357 mol of Hexane is equal to :
= (12/2) × 0.357
= 2.14 mol
The volume of carbon dioxide gas forms = 2.14 × 22.4 = 48 L
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4. The volume of a liquid sample is measured as 15.43 L. We need to know the volume in
mL.
3.
b.
What conversion factor would be used in the calculation?
Calculate the volume in mL.
Conversion factor used to convert volume is 1L = 1000 mL.
15.43L = 15430mL
The same attribute is expressed using a unit conversion but in a different unit of measurement. For instance, time can be expressed in minutes rather than hours, and distance can be expressed in kilometers, feet, or any other measurement unit instead of miles. Measurements are frequently offered in one set of units, like feet, but are required in another set, like chains. A conversion factor is a mathematical equation that facilitates an equal exchange of feet for chains.
A conversion factor is a number that is used to multiply or divide one set of units into another. If a conversion is required, it must be done using the correct conversion factor to get an identical value.
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A beaker weighed 53.10g. To the isolated beaker was added 5.348g of iron pellets and 56.1g of hydrochloride acid. What was the total mass of the beaker and the products after reaction?
114.5 g is the total mass of the beaker .
Total mass of beaker=53.10g+5.348g+ 56.1g
Total mass=114.5 g
Mass is used in physics to specific inertia, a fundamental function of all remember. basically, it's far a mass of rely's resistance to changing its course or pace in response to the software of a force.
The exchange that an applied force produces is smaller the extra mass a body has. The kilogram, the unit of mass within the international machine of gadgets, corresponds to 6.62607015 1034 joule seconds using Planck's consistent (SI). One joule is produced by way of multiplying one kilogram by means of one rectangular meter per 2d.
The kilogram is decided by genuine measurements of Planck's regular on account that the second one and the meter have formerly been described in phrases of other bodily constants.
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what does the electronegravity of an atom indicate?
Answer:
The electronegativity of an atom indicates the ability of an atom to attract shared electrons in a covalent bond. The higher the value of the electronegativity, the more strongly that element attracts the shared electrons.
Hope this helps!!!
when electric current is applied externally, which of the following produces a redox reaction: A wood. B. electrolytic C. Solid
Answer:
the answer is a
Explanation:
Drag the tiles to the correct boxes to complete the pairs.
Match the natural resources to their uses.
water
forests
wetlands
parks
paper
preserving aesthetic value
irrigation
trapping sediments
Answer:
water - irrigation
forests - paper
wetlands - trapping sediments
parks - preserving aesthetic value
Explanation:
One important use of water is for the irrigation of farmlands. Irrigation makes it possible for farming activities to continue all year round.
The papers yield pulp which is used to produce paper. This implies that paper is important product obtained from the forest.
The wetlands trap sediments and retain particulates from both onsite and offsite sources(blue earth county).
A park serves to preserve aesthetic value. This is a primary importance of the parks.
how many sodium ions are in 1.4 kg of sodium chloride, NaCl?
Answer:
1.44 x 10²⁵ ions of Na⁺
Explanation:
Given parameters:
Mass of NaCl = 1.4kg = 1400g
Unknown:
Number of ions of sodium = ?
Solution:
The compound NaCl in ionic form can be written as;
NaCl → Na⁺ + Cl⁻
In 1 mole of NaCl we have 1 mole of sodium ions
Now, let us find the number of moles in NaCl;
Number of moles = \(\frac{mass}{molar mass}\)
Molar mass of NaCl = 23 + 35.5 = 58.5g/mol
Number of moles = \(\frac{1400}{58.5}\) = 23.93mol
So;
Since 1 mole of NaCl gives 1 mole of Na⁺
In 23.93 mole of NaCl will give 23.93 mole of Na⁺
1 mole of a substance = 6.02 x 10²³ ions of a substance
23.93 mole of a substance = 6.02 x 10²³ x 23.93
= 1.44 x 10²⁵ ions of Na⁺
How many liters of carbon dioxide can be produced if 37.8 grams of carbon disulfide react with excess oxygen gas at 28.85 degrees Celsius and 1.02 atmospheres?
CS2(l) + 3O2(g) yields CO2(g) + 2SO2(g)
2.78 liters
5.95 liters
12.1 liters
11.9 liters
The volume of carbon dioxide produced is approximately (d) 11.9 liters.
To determine the amount of carbon dioxide (C\(O_2\)) produced when 37.8 grams of carbon disulfide (C\(S_2\)) reacts with excess oxygen gas (\(O_2\)), we need to use stoichiometry and the given balanced chemical equation:
C\(S_2\)(l) + 3\(O_2\)(g) → C\(O_2\)(g) + 2S\(O_2\)(g)
First, we calculate the number of moles of C\(S_2\) using its molar mass:
Molar mass of (C\(S_2\)) = 12.01 g/mol (C) + 32.07 g/mol (S) × 2 = 76.14 g/mol
Number of moles of (C\(S_2\)) = mass / molar mass = 37.8 g / 76.14 g/mol ≈ 0.496 mol
From the balanced equation, we can see that the stoichiometric ratio between (C\(S_2\)) and C\(O_2\) is 1:1. Therefore, the number of moles of C\(O_2\) produced will also be 0.496 mol.
Now we can use the ideal gas law to calculate the volume of C\(O_2\) at the given temperature and pressure. The ideal gas law equation is:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant (0.0821 L·atm/mol·K), and T is the temperature in Kelvin.
Converting the temperature from Celsius to Kelvin:
T(K) = 28.85°C + 273.15 = 302 K
Using the ideal gas law:
V = nRT / P = (0.496 mol) × (0.0821 L·atm/mol·K) × (302 K) / (1.02 atm) ≈ 11.9 L
The correct answer is 11.9 liters.
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The atomic number of sodium (Na) is 11. The element phosphorus (P) is the fourth element to the right of sodium in the periodic table.
The atomic number of phosphorus is ____. It has zero charge because it had ____ electrons.
Answer:
atomic number of phosphorous is 15. It has zero charges because it has equal number of protons and electrons
Explanation:
A chemistry student is given 250.0 mL of clear aqueous solution at 42 C. He is told an unknown amount of a certain compound X is dissolved in the solution. The student allows the solution to cool to 25C. At that point, the student sees that a precipitate has formed. He pours off the remaining liquid solution, throws away the precipitate and evaporates the remaining liquid solution under vacuum. More precipitate forms. The student washes, dries, and weighs the additional precipitate. It weighs 8.75 g. Using only the information above, can you calculate the solubility of X at 25C? If yes, calculate it.
Answer:
No
Explanation:
The solubility of a solid in water refers to the amount of that solid that dissolves in water.
It is not possible to calculate the solubility of the solid because the student threw away the first precipitate that formed. We already have the volume of water, but having lost some mass of precipitate, it has become impossible to accurately determine the solubility.
Hence the answer provided above.
what is the weight in remaining oranges
Which of these changes is an example of a physical change?
A. electrolysis of water forming hydrogen and oxygen
B. cooking an egg
C. melting ice
D. iron combining with oxygen to form rust
Answer: C. Melting Ice
Explanation: The rest are chemical changes, the ice is the same substance (water), just changing physical forms, solid --> liquid
Zoe left her water bottle capped and in her bedroom. She came back some time later to realize that the bottle was “sweating” and left a ring of liquid on her nightstand
Explain thoroughly the science behind why Zoe’s water bottle is sweating
Answer:
Condensation
Explanation:
Zoe is quite keen to have noticed what we call condensation. Air contains many components, one of those being water vapor. Like how sugar is soluble in water, water can be said to be "soluble" in air. Water will evaporate into the air to a certain extent. The higher the temperature of the air, the more water the air can hold. If the air has more water that it can hold (potentially because of a temperature decrease), the extra water will come out of the air. Zoe's water bottle was cold, and because the air around Zoe's bottle had cooled down, the air can not hold as much water as it could when it was warm, so the air deposited the extra water in the form of liquid water onto the bottle, giving the illusion that her bottle was sweating.
What is the concentration of lithium ions in 0.390 M Li3PO4?
Answer:
1.17 M
Explanation:
Step 1: Given data
Molar concentration of Li₃PO₄: 0.390 M
Step 2: Write the reaction for the dissociation of Li₃PO₄
Lithium phosphate is a strong electrolyte that dissociates according to the following equation:
Li₃PO₄(aq) ⇒ 3 Li⁺(aq) + PO₄³⁻(aq)
Step 3: Calculate the molar concentration of lithium ions
The molar ratio of Li₃PO₄ to Li⁺ is 1:3. The molar concentration of Li⁺ is 3/1 × 0.390 M = 1.17 M.
Considering the definition of strong electrolyte, the molar concentration of Li⁺ is 1.17 M.
An electrolyte is a substance that, when dissolved in water, gives rise to the formation of ions.
Electrolytes can be weak or strong, depending on whether they are partially or fully ionized or dissociated in aqueous medium.
A strong electrolyte is any substance that, when dissolved in water, exclusively causes the formation of ions with a practically irreversible dissolution reaction. That is, it is a solute that completely dissociates into ions in solution.
Lithium phosphate is a strong electrolyte that dissociates according to the following equation:
Li₃PO₄(aq) ⇒ 3 Li⁺(aq) + PO₄³⁻(aq)
From the balanced equation, you can observed that:
1 mole of Li₃PO₄ produced 3 mole of Li⁺.
Therefore, 0.390 M Li₃PO₄ will produce = 3 × 0.390 = 1.17 M Li²⁺
In summary, the molar concentration of Li⁺ is 1.17 M.
Learn more:
https://brainly.com/question/20358167?referrer=searchResultshttps://brainly.com/question/3522017?referrer=searchResultshttps://brainly.com/question/19723191?referrer=searchResultshttps://brainly.com/question/21276272?referrer=searchResultsTwo colleagues are measuring the melting point of a substance. They observe two ranges of melting point, at 134-137 °C and 132-136 °C. What are the possible reasons that lead to two different values with exactly the same sample?
Explanation:
impurities affect both melting point and boiling point
in the case of melting point it lowers the melting point
so I guess one of the samples Ie contained impurities
5.How many moles of uranium are in 50 grams of uranium?
a. Identify the structures shown in the diagram. b. Identify the information that is contained within these structures. c. Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person. d. Explain why the structures are in pairs.
The answer responses to the structures shown in the diagram are:
A. chromosomes
C. They would be the same.
B. They are in pairs because each one comes from a different parent.
What is the structure about?The chromosomes are in pairs because humans have a diploid number of chromosomes, meaning they have two sets of chromosomes, one inherited from each parent.
The nucleus is important in eukaryotic cells and has many important parts that help the cell work properly. There are some parts inside cells called the nuclear membrane, nucleoplasm, nucleolus, and chromatin. Chromatin is made up of DNA and other proteins.
Every part of a person's body has the same genes, but the way they are organized can be different in different types of cells. The chromosomes in our skin cells might not be the same as the chromosomes in our muscle cells, even if they come from the same person.
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Identify the structures shown.
A. chromosomes
B. mitochondria
C. nuclei
D. vacuoles
C
Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.
A. There would be longer.
B. They would be shorter.
C. They would be the same.
D. They would be different.
Describe how the structures from this cell would compare to the structures in the nucleus of another body cell from the same person.
A. There would be longer.
B. They would be shorter.
C. They would be the same.
D. They would be different.
Explain why the structures are in pairs.
A. They aren't in pairs.
B. They are in pairs because each one comes from a different parent.
C. This cell is making a copy of itself.
D. The cell always has 2 copies in case 1 is damaged.
PLEASE HELP ASAP!
5 + 6 HNO3 -> H2504 + 6 NO2 + 2H20
In the above equation how many moles of water can be made when 112.6 grams of HNO3 are consumed?
Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:
Hydrogen 1
Nitrogen 14
Sulfur 32
Oxygen 16
0.595 moles of water can be made at 112.6 grams of \(HNO_{3}\) are consumed
To determine the number of moles of water produced when 112.6 grams of \(HNO_{3}\) are consumed, we use the equation's stoichiometry and molar masses.
To determine the number of moles of water produced when 112.6 grams of \(HNO_{3}\) are consumed, we need to use the molar mass of \(HNO_{3}\) and the stoichiometric coefficients of the balanced chemical equation.
The molar mass of \(HNO_{3}\) is calculated as follows:
1 mole of hydrogen (H) = 1 g/mol
1 mole of nitrogen (N) = 14 g/mol
3 moles of oxygen (O) = 3 × 16 g/mol = 48 g/mol
Adding these together, the molar mass of \(HNO_{3}\) is 1 + 14 + 48 = 63 g/mol.
Now, we can set up a conversion factor using the stoichiometry of the balanced equation:
From the equation: 5 + 6 \(HNO_{3}\) -> \(H_{2}SO_{4}\) + 6 \(NO_{2}\) + 2 \(H_{2}O\)
From the coefficients: 6 moles of \(HNO_{3}\) produce 2 moles of \(H_{2}O\)
To find the moles of water produced, we use the following calculation:
112.6 g \(HNO_{3}\) × (1 mol \(H_{2}O\) / 63 g \(HNO_{3}\)) × (2 mol \(H_{2}O\) / 6 mol \(HNO_{3}\)) = 0.595 mol \(H_{2}O\)
Therefore, when 112.6 grams of \(HNO_{3}\) are consumed, approximately 0.595 moles of water can be produced according to the given balanced equation and molar masses.
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