why does the pressure of gas increase due to inclement of heat
Answers
Answer:
When the gas is heated, the particles will gain kinetic energy which will make them move faster.
Explanation:
Related Questions
Which answer best describes what is happening in the following redox reaction?
4Fe + 3O2 Right arrow. 2Fe2O3
This is combustion.
This is neutralization.
Iron is oxidized to form rust.
Oxygen is oxidized to form rust.
Answers
Iron is oxidized to form rust. Hence, option C is correct.
What is a redox reaction?A chemical reaction that takes place between an oxidizing substance and a reducing substance.
Chemical reaction: Fe + O₂ → Fe₂O₃.
Oxidation half reaction:
Fe⁰ → Fe⁺³ + 3e⁻
4Fe⁰ → 4Fe⁺³ + 12e⁻
Reduction half-reaction:
O₂⁰+ 4e⁻ → 2O⁻²
3O₂⁰+ 12e⁻ → 6O⁻²
Balanced chemical reaction:
4Fe + 3O₂ → 2Fe₂O₃.
Oxidation is an increase of oxidation number, iron is oxidized from oxidation number 0 (Fe) to oxidation number +3 (in rust Fe₂O₃).
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Answer:Iron is oxidized to form rust.
Explanation:
(Look at the chart) You are trying to figure out the identity of a lump of yellow metal you found. You use a scale to determine that it has a mass of 50g.
You fill a container with 100mL.
What kind of metal is the lump you found?
LOOK AT THE CHART
-impossible to know
-gold
-copper
-silver
Answers
Explanation:
Volume of solid metal = 102.6ml - 100ml = 2.6ml.
Mass of solid metal = 50g.
Density = Mass / Volume = 50g / 2.6ml = 19.2g / cm³.
Also from our knowledge, only gold metal is yellowish here.
Hence the answer is gold metal.
in part a, even though the concentrations of the reactants are changed in each trial, the experimentally determined values of the rate constant, k , for each trial should be fairly similar. why is this?
Answers
As long as the temperature and other conditions are kept constant, the rate constant will remain constant for that reaction.
Part A: Why should experimentally determined values of the rate constant, k, for each trial be fairly similar, even though the concentrations of the reactants are changed in each trial,
The experimentally determined values of the rate constant k for each trial should be fairly similar even though the concentrations of the reactants are changed in each trial because the rate constant is a measure of the intrinsic reactivity of the reaction itself, and is independent of the initial concentrations of the reactants.
As long as the temperature and other conditions are kept constant, the rate constant will remain constant for that reaction.
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How many moles of neon (Ne) gas have a volume of 0.84 L and a pressure of
4.6 atm at 222 K?
(The universal gas constant is 0.0821 L.atm/mol.K.)
A. 4.7 mol
B. 0.010 mol
C. 0.21 mol
D. 70. mol
Answers
The amount of Neon gas with the given volume and at the given temperature and pressure is 0.21 mol.
Option C) 0.21 mol is the correct answer.
What is Ideal Gas Law?The Ideal gas law or general gas equation emphasizes on the state or behavior of a hypothetical ideal gas. It states that "the pressure multiplied by volume is equal to moles multiply by the universal gas constant multiply by temperature.
It is expressed as;
PV = nRT
Where P is pressure, V is volume, n is the amount of substance, T is temperature and R is the ideal gas constant ( 0.08206 Latm/molK )
Given that;
Volume of the gas V = 0.84LPressure P = 4.6atmTemperature T = 222KUniversal gas constant R = 0.0821 Latm/molK Amount of gas n = ?PV = nRT
n = PV / RT
n = ( 4.6atm × 0.84L ) / ( 0.0821 Latm/molK × 222K )
n = ( 3.864Latm ) / ( 18.2262Latm/mol )
n = 0.21 mol
Therefore, the amount of Neon gas with the given volume and at the given temperature and pressure is 0.21 mol.
Option C) 0.21 mol is the correct answer.
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How many electrons are gained in the half-reaction O2 + electrons — 202?
O
A. 2
O
B. 4
o
C. O
o
D. 1
SUBMIT
Answers
Answer: B. 4
Explanation:I just took it
Which is the correct number of moles of nitrogen monoxide that is produced from 13.2 moles of oxygen gas in the presence of excess ammonia (NH3)?
Answers
Answer:
10.56 moles of NO will be produced
Explanation:
The balanced reaction of ammonia, NH₃ with oxygen, O₂ is:
4NH₃ + 5O₂ → 4NO + 6H₂O
Where 5 moles of oxygen react with an excess of ammonia to produce 4 moles of nitrogen monoxude.
If 13.2 moles of O₂ react:
13.2 mol O₂ * (4 mol NO / 5 mol O₂) =
10.56 moles of NO will be producedAt a track meet the officials use a timer to determine the amount of time it takes to complete each running event. If the timer does not function correctly and adds one second onto each runner's time this is an example of a random error. true or false
Answers
Answer:
This is an example of a random error because the timer is adding an extra second onto each runner's time, which is not an accurate representation of their true time. This error is not systematic, meaning that it does not affect all runners in the same way or add the same amount of time onto their times.
Explanation:
Give me brainliest if that helped :)
1) PbBr₂ (1) What ions are present? Which one will move towards the cathode? Which one will move towards the anode? Write the anode half equation. Write the cathode half equation. f) Write the overall redox reaction.
Answers
The ions are present in cations and anions.
The cathode Positively charged cations.
The anode is negative ions.
The oxidation occurs is Zn(s) = Zn2+ (aq) + (2e-).
A redox reaction combines two half-reactions into one complete formula. Electrons lost in the oxidation half-reaction are gained in the reduction half-reaction. Thus, a redox reaction is a chemical reaction in which electrons are transferred between the two species.
A substance that is reduced in a chemical reaction is called an oxidizing agent and a substance that is oxidized is called a reducing agent. Example of the redox reaction of zinc and copper. A reaction is complete when it reaches equilibrium, that is when the concentrations of reactants and products stop changing. If the equilibrium constant is very large.
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what is the name of the ionic compound made of beryllium and chlorine?
Answers
Answer:
beryllium chloride
Explanation:
Therefore a compound made from beryllium and chlorine will be named beryllium chloride.
How did the data from the class barometer compare to the air pressure shown in the weather report?
How did the data from the class barometer compare to the air pressure shown in the weather report?
Answers
The comparison between the class barometer data and the air pressure shown in the weather report serves as a means to evaluate the accuracy and effectiveness of the barometer's measurements.
The comparison between the data from the class barometer and the air pressure shown in the weather report revealed a correlation between the two measurements. The class barometer readings were likely taken at the same time as the weather report's air pressure measurement to ensure accurate comparison.
If the class barometer readings closely matched the air pressure indicated in the weather report, it would suggest that the barometer was functioning correctly and providing reliable measurements. This would indicate that the class barometer could be used as a reliable tool for monitoring air pressure changes.
However, if there were significant discrepancies between the class barometer readings and the air pressure reported in the weather report, it could indicate a calibration issue with the barometer or potential inaccuracies in its measurements. In such a case, it would be necessary to investigate the reasons behind the discrepancies and determine the reliability of the class barometer for future use. It helps to determine the barometer's reliability as a tool for monitoring air pressure changes in the local environment.
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Burning of aluminium powder in excess oxygen produces white aluminium oxide powder.Balance chemical equation.
Explain to me tq(*σ´∀`)σ
Answers
First, write out the unbalanced equation.
Al(s) + O2(g) —> Al2O3(s)
Balance the oxygens first. What do you need to multiply by to get to a common multiple of 2 and 3 to balance the oxygens? The common multiple is 6, so multiply the O2 by 3 and the Al2O3 by 2.
Al(s) + 3O2(g) —> 2Al2O3(s)
Now balance your aluminum. You have 1 in the reactants and 4 in the products, so multiply the reactant by 4.
4Al(s) + 3O2(g) —> 2Al2O3(s)
Hope this makes sense!
How are plant cells different from animal cells?
Select the three correct statements.
A. Their cells have cell walls.
B. They can convert the sun's energy into food.
C. They have chloroplasts.
D. They can move around.
E. They cannot make their own food.
pls help this is due today
Answers
Answer:
b.
They can convert the sun's energy into food.
Answer:
its letter A
because Plant cells have a cell wall, but animals cells do not.
Carmen is heating some water and trying to measure the temperature of water using a celsius thermometer. which measurement can she expect once the water begins to boil? a. 32°c b. 100° cc. 212°c d. 373°c
Answers
Once the water begins to boil, Carmen can expect a measurement of 100°C on the Celsius thermometer. Option b is correct.
At standard atmospheric pressure, water boils at 100°C, which is the boiling point of water. This is the temperature at which water changes from a liquid to a gas (water vapor) as it absorbs heat energy.
Option a (32°C) is the freezing point of water, while option c (212°C) and option d (373°C) are the boiling points of water at different pressure levels. However, at standard atmospheric pressure, the boiling point of water is 100°C. Hence option b is correct choice.
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if you are working with a chemical and need to find out about the routes of exposure, as well as the short and long term effects of exposure, where on the sds would you look?
Answers
If you need to learn more about the exposure pathways, as well as the immediate and long-term impacts of exposure, when dealing with a chemical, Toxicological Information Section 11
What are the consequences of toxicity?Additionally possible symptoms include mortality, cyanosis, a headache, weakness, dizziness, shortness of breath, and cyanosis. Ingestion can irritate the digestive system and trigger nausea and vomiting. According to reports, DAAB can cause methemoglobinemia after being inhaled, ingested, or absorbed via the skin.
Toxicology: What is it?A branch of research known as toxicology aids in our understanding of the potentially hazardous consequences that certain materials, settings, and events may have on humans, animals, and the environment.
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research zhenyis achievements in the world of science. what is she most known for? i jeed 3 facts about her life.
Answers
Answer:
She breached the feudal customs of the time, which hindered women's rights, by working to educate herself in subjects such as astronomy, mathematics, geography, and medicine. She was well known for her contributions in astronomy, mathematics, and poetry. Zhenyi was a famous female scientist from the Qing dynasty.
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What is the molecule that enters the citric acid cycle.
Answers
Answer:
Carbs can be broken down into glucose, the first molecule used during glycolysis. Similarly, proteins can be broken down into their basic parts to form acetyl CoA, the molecule that enters the citric acid cycle.
The following reaction
KBr + Mg -->
a
will occur because Mg is more active than K
b
will not occur because Mg is more active than K
c
will occur because K is more active than Mg
d
will not occur because K is more active than Mg
Answers
Answer:
will occur because K is more active than Mg
you have a lead ball with a mass of 420 g. the density of lead is 10.5 g/cm³. what is the volume of the ball
Answers
Answer:
The answer is
40.0 mLExplanation:
The volume of a substance when given the density and mass can be found by using the formula
\(volume = \frac{mass}{density} \)
From the question
mass = 420 g
density = 10.5 g/cm³
The volume is
\(volume = \frac{420}{10.5} \\ \)
We have the final answer as
40.0 mLHope this helps you
What is the frequency of light that has an energy of 3.98 x 10-18 J
Answers
) Consider the general reaction 5Br−(aq)+BrO3−(aq)+6H+(aq)→3Br2(aq)+3H2O(aq) For this reaction, the rate when expressed as Δ[Br2]/Δt is the same as A) −5Δ[Br−]/Δt B) −0.6Δ[Br−]/Δt C) 3Δ[BrO3−]/Δt D) −Δ[H2O]/Δt E) None of these choices are correct.
Answers
The correct choice is A) −5Δ[Br−]/Δt. The rate expressed as Δ[Br2]/Δt is proportional to -5 times the rate of change of Br−.
In the given reaction 5Br−(aq) + BrO3−(aq) + 6H+(aq) → 3Br2(aq) + 3H2O(aq), the stoichiometric coefficients provide information about the relationship between the reactants and products. To determine the rate expressed as Δ[Br2]/Δt, we need to compare it with the rate of change of the other species.
Based on the balanced equation, for every 5 moles of Br− consumed, 3 moles of Br2 are produced. Therefore, the rate of change of Br−, Δ[Br−]/Δt, is related to the rate of change of Br2, Δ[Br2]/Δt, by a factor of -5/3.
The other choices, B) −0.6Δ[Br−]/Δt, C) 3Δ[BrO3−]/Δt, and D) −Δ[H2O]/Δt, do not correspond to the correct relationship based on the stoichiometric coefficients of the reaction. Therefore, the correct answer is A) −5Δ[Br−]/Δt.
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Which equation represents conservation of charge?
1. I- + 2e- → I2
2. 2I- → I2 + 2e-
3. Br2 → 2Br- + 2e-
4. Br + 2e- → Br-
*Pls explain your answer
Answers
Answer:
The answer for this question is the second one
The equation 2I⁻→ I₂ + 2e⁻ represents conservation of charge , Option 2 is the correct answer.
What is the equation for conservation of charge ?The law of conservation of charge states that the Electric energy cannot be created and cannot be destroyed.
The equation in the option 2 represents the conservation of charge as the 2 electrons that re present on the reactant side as negative charge is balanced by the 2 electron in the product side.
Therefore the equation 2I⁻→ I₂ + 2e⁻ represents conservation of charge , Option 2 is the correct answer.
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which statement describe a species adapting to changes in it’s environment?
Answers
Answer: Example: The water in a species envirmoent suddenly becomes more acid therefore, the species adapts it's body to become more resistent and tolerate to chemicals.
This might also give it an adavantage to the species who have not yet adapted to the change
Explanation: There are three type of adaptions. 1) Structural 2) Behavioral 3) Physiological
The atomic number and mass number for calcium-39 are 20 and 39, respectively. How many neutrons are in one atom
Answers
There are 19 neutrons in one atom of calcium-39.
The atomic number (Z) represents the number of protons in an atom, and in the case of calcium, it is 20. The mass number (A) represents the total number of protons and neutrons in an atom, and for calcium-39, it is 39.
To find the number of neutrons, we subtract the atomic number from the mass number. In this case, 39 - 20 = 19 neutrons. Therefore, one atom of calcium-39 contains 19 neutrons. Neutrons are uncharged particles found in the nucleus of an atom and contribute to its mass.
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suppose 2.05 liters of gas at 34 °c is under 7.51 × 107 pascals of pressure.
How many moles of gas are there in the system?
Answers
The moles of number can be calculated by making use of the ideal gas law, which is given by PV = nRT.
The pressure of the gas, P = 7.51 x 10^7 PaThe volume of the gas, Where:P is the pressure of the gas.V is the volume of the gas.n is the number of moles of the gas. R is the universal gas constant, which has a value of 8.314 J/(mol*K).T is the temperature of the gas in Kelvin.
The pressure of the gas, P = 7.51 x 10^7 PaThe volume of the gas, V = 2.05 LThe temperature of the gas in Celsius, T = 34 °C = 307 KNote: Kelvin = Celsius + 273Substituting the values into the ideal gas law,PV = nRT7.51 x 10^7 Pa × 2.05 L = n × 8.314 J/(mol*K) × 307 Kn = (7.51 x 10^7 × 2.05) ÷ (8.314 × 307)n = 601.3/2548.5n = 0.236 moles of gasThere are 0.236 moles of gas in the given system.
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select the true statements regarding the roles of sex chromosomes in human development.
Answers
The true statements regarding the roles of sex chromosomes in human development are: b) An individual missing the SRY region of the Y chromosome will be phenotypically female. and e) Female cells typically contain two active X chromosomes which are both actively transcribed.
In human development, the sex chromosomes play a crucial role in determining the individual's sex and influencing various aspects of their development. 'An individual missing the SRY region of the Y chromosome will be phenotypically female; is true because the SRY (sex-determining region Y) gene, located on the Y chromosome, is responsible for initiating male development. If this region is missing, the individual will develop as phenotypically female.
In female cells, typically one of the two X chromosomes is inactivated through a process called X-chromosome inactivation or lyonization. However, some genes on the inactivated X chromosome can still be transcribed, and the degree of inactivation can vary between cells. This leads to the presence of two active X chromosomes in female cells.
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The complete question is:
Select the true statements regarding the roles of sex chromosomes in human development. a) The X chromosome does not contain functional genes. b) An individual missing the SRY region of the Y chromosome will be phenotypically female. c) XXX females develop normally except for some slight physical abnormalities. d) XO females are viable, whereas YO males are inviable. e) Female cells typically contain two active X chromosomes which are both actively transcribed.
which best describes nuclear energy?
A the energy that matter has due to the vibrations of its particles
B the energy an object has due to its chemical bonds
C the energy generated by a flow of electrons
D the energy stored inside the center of an atom
Answers
Answer:
The correct answer is - D. the energy stored inside the center of an atom.
Explanation:
Each atom has a small center in it called the nucleus and the energy that holds the nucleus or center of the atom together in the atom is known as nuclear energy.
It is the energy that is stored in the center of the atom and normally does not come out, however, in some radioactive atoms the sends some part of the energy as radiation.
Thus, the correct answer is - D. the energy stored inside the center of an atom.
A sample of a gas has volume 78.5ml at 318.15 K.. What Volume at will the sample occupy at 273. 15 K when the pressure is held constant?
Answers
Charles’ Law
V₁/T₁=V₂/T₂
78.5/318.15=V₂/273.15
V₂=67.4 ml
What is the mass of 2.80 moles of H2O
Answers
The mass of 2.80 moles of H2O is approximately 50.441 grams.
What is a molar mass ?
Molar mass is the mass of one mole of a substance and is expressed in units of grams per mole (g/mol). It is calculated by summing the atomic masses of all the atoms in a molecule, and it is expressed in the same units as atomic mass, which is atomic mass units (amu).
The molar mass of water (H2O) is 18.01528 g/mol (2 hydrogen atoms with atomic mass 1.008 and 1 oxygen atom with atomic mass 15.999).
To find the mass of 2.80 moles of H2O, we can use the following formula:
mass = number of moles x molar mass
Plugging in the values, we get:
mass = 2.80 mol x 18.01528 g/mol
mass = 50.441 g
Therefore, the mass of 2.80 moles of H2O is approximately 50.441 grams.
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calculate the mass of 0.5 moles of caco3 in grams with procedure
Answers
Answer:
50g
Explanation:
moalr mass of CaCO3= 40g/mol+ 12g/mol+(16g/mol*3)
=52g/mol+48g/mol
=100g/mol
1 mol= 100g
0.5mol=x
by cross multiplication,
0.5*100gmol=x mol
x=50g
What are the elements that make up the compound, and what are some properties of these elements?
Answers
Answer: Below (=
Explanation:
The properties of a compound depend not only on which atoms the compound contains, but also on how the atoms are arranged. Atoms of carbon and hydrogen, for example, can combine to form many thousands of different compounds.