which gas has the same density at 316 degrees and 1.50 atm that o2 gas has at 0 degrees and 1 atm?
Answers
The gas that has the same density at 316 degrees and 1.50 atm as O2 gas has at 0 degrees and 1 atm is N2 gas.
The ideal gas law states that PV=nRT, where P is the pressure, V is the volume, n is the number of moles, R is the universal gas constant, and T is the absolute temperature.
Since the number of moles is the same for both gases, we can compare their densities using the equation d = PM/RT, where d is the density, P is the pressure, M is the molar mass, R is the universal gas constant, and T is the absolute temperature.
By plugging in the values for O2 gas at 0 degrees and 1 atm and solving for the density, we get 1.429 g/L. To find the gas with the same density at 316 degrees and 1.50 atm, we need to solve for M using the density equation and then find the gas with that molar mass, which is N2 gas.
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Related Questions
A 126-gram sample of titanium metal is heated from 20.0°C to
45.4°C while absorbing 1.68 kJ of heat. What is the specific
heat of titanium?
Answers
Explanation:
Given,
Q = 1.68 kJ = 1680 Joules
mass = 126 grams
T₁ = 20°C
T₂ = 45.4°C
The specific heat for the metal can be calculated by using the formula
Q = (mass) (ΔT) (Cp)
Here, ΔT = T₂ - T₁ = 45.4 - 20 = 25.4°C.
Substituting values,
1680 = (126)(25.4)(Cp)
By solving,
Cp = 0.524 J/g°C.
The specific heat for the titanium metal is 0.524 J/g°C.
The speed of light in a vacuum is 2.998×10^8 m/s .
What is its speed in miles per minute (mi/min)?
Answers
Answer:299,800,000
Explain: The speed of light is 3.00x108m/s and in mph is 6.708 x 108.
How many moles of iron is 6.022 x 10^22 atoms of iron? (Report answer as a number rounded to one place past the decimal.) *
Answers
\(\displaystyle 0.1 \ mol \ Fe\)
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
6.022 × 10²² atoms Fe (iron)
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: \(\displaystyle 6.022 \cdot 10^{22} \ atoms \ Fe(\frac{1 \ mol \ Fe}{6.022 \cdot 10^{23} \ atoms \ Fe})\)Divide: \(\displaystyle 0.1 \ mol \ Fe\)How many grams are in 87g of potassium bromide?
Answers
The number of mole present in 87 grams of potassium bromide, KBr is 0.731 mole
How do i determine the number of mole present?We'll begin our calculation by obtaining the molar mass of potassium bromide, KBr. Details below:
Molar mass of ptassium, K = 39 g/molMolar mass of bromine, Br = 80 g/molMolar mass of potassium bromide, KBr =?Molar mass of potassium bromide, KBr = K + Br
Molar mass of potassium bromide, KBr = 39 + 80
Molar mass of potassium bromide, KBr = 119 g/ mol
Finally, we shall determine the number of mole present. Details below:
Mass of potassium bromide, KBr = 87 grams Molar mass of potassium bromide, KBr = 119 g/mol Mole of potassium bromide, KBr =?Mole = mass / molar mass
Mole of potassium bromide, KBr = 87/ 119
Mole of potassium bromide, KBr = 0.731 mole
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Complete question:
How many moles are in 87g of potassium bromide?
1.
Which statement correctly describes a major defect of the student model in representing the
structure of a plant cell?
A А
It does not demonstrate the ability to grow and divide over time,
пе
B.
It does not demonstrate the ability to move in response to environmental stimuli,
C
It does not represent the organelles as being submerged in a fluid medium
D. It does not represent multiple types of structure as turning light into food,
Answers
what will be the ph of a buffer solution prepared from 0.20 mol nh3, 0.40 mol nh4no3, and just enough water to give 1.00 l of solution?
Answers
The pH of the buffer solution is approximately 8.95.
To find the pH of the buffer solution, we'll use the Henderson-Hasselbalch equation:
pH = pKa + log ([A-]/[HA])
Here, [A-] is the concentration of NH3 (base), and [HA] is the concentration of NH4+ (conjugate acid). First, we need to find the pKa of NH4+. The pKa is the negative logarithm of the Ka (acid dissociation constant) value. For NH4+, the Ka value is 5.56 x 10^-10.
Step 1: Find pKa
pKa = -log(Ka) = -log(5.56 x 10^-10) = 9.25
Step 2: Find the concentration of NH3 and NH4+
[NH3] = 0.20 mol / 1.00 L = 0.20 M
[NH4+] = 0.40 mol / 1.00 L = 0.40 M
Step 3: Use the Henderson-Hasselbalch equation
pH = 9.25 + log(0.20/0.40) = 9.25 - 0.301 = 8.949
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how do atoms form a new substance? responses by sharing electrons with each other by sharing electrons with each other by losing electrons by losing electrons by gaining electrons from each other by gaining electrons from each other by losing neutrons to each other
Answers
By exchanging electrons with one another, atoms create new materials. When two atoms share at least one pair of electrons, this is known as a covalent link. Ionic bonds form when positive are attracted to one another and share an electron as a consequence.
What does joining atoms to create new compounds and sharing electrons have in common?When two atoms share , they establish a connection. Because the two positively charged atomic nuclei and shared, negatively charged electrons in a covalent bond are attracted to one another by electrostatic forces, the bond is stable.
One or more pairs of electrons from each atom are shared by the other atoms to form a covalent link. The two atomic nuclei are pulling these electrons in opposite directions. When the gap between two atoms' electronegativities is too narrow for an electron transfer to take place and form ions, a covalent bond is created.
Reactants interact with one another in a chemical reaction, breaking the bonds that hold their atoms together.
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Answer:
Here's your answer on the Image!
Explanation:
I took the K-12 Quiz
question 1 a spreadsheet cell contains the coldest temperature ever recorded in new zealand: -22 °celsius. what function will display that temperature in fahrenheit?
Answers
When the temperature conversion function =CONVERT(-22, "C", "F") is applied, a reading of -22 °C in Fahrenheit is displayed. On a variety of scales, including the Fahrenheit and Celsius systems, temperature is a unit that is used to denote hotness or coolness.
Heat energy will logically go from a hotter (body with a higher temperature) to a colder (body with a lower temperature) according to temperature (one at a lower temperature).
A temperature is a measurement used to express how hot or cold something is. It demonstrates how heat energy naturally flows from a hotter body to a cooler body and can be expressed in terms of any number of arbitrary scales (one at a lower temperature).
A match is burning at a far greater temperature than an iceberg, yet an iceberg has a significantly higher total heat energy than a match. Temperature is not the same as the energy of a thermodynamic system.
The temperature, along with pressure, density, and other similar properties, is referred to as an intense property as opposed to extensive characteristics like mass or volume—one that is independent of the quantity of stuff being addressed.
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Kinetic energy can come from other sources of energy. True False
Answers
Answer:
True
Explanation:
Sources include renewable energy sources such as the sun, wind, water, and geothermal heat. However, we also use artificial sources generated by humans, such as walking, vehicle motion, and system vibration.
Hope it helps
Find the volume of 5.74 grams of NO2 (Hint: use two factors)
Answers
Answer:
1.2 cm^3
Explanation:
5.74 grams of a something occupies a volume of 1.2 cm^3 .
in order to derive the nernst equation, what modification must be made to the free energy equation?select the correct answer below:gibbs free energy is expressed in terms of the equilibrium constant.gibbs free energy is expressed in terms of cell potential.gibbs free energy is expressed in terms of enthalpy.gibbs free energy is expressed in terms of entropy.
Answers
The Nernst equation, the modification that must be made to the free energy equation is that Gibbs free energy is expressed in terms of cell potential. Here's a step-by-step explanation:
1. Start with the Gibbs free energy equation:
ΔG = ΔG° + RT ln(Q)
2. Recognize the relationship between Gibbs free energy and cell potential:
ΔG = -nFE
ΔG° = -nFE°
3. Substitute the expressions for ΔG and ΔG° in terms of cell potential into the Gibbs free energy equation:
-nFE = -nFE° + RT ln(Q)
4. Rearrange the equation to isolate E (cell potential) on one side:
E = E° - (RT/nF) ln(Q)
This final equation is the Nernst equation, where E is the cell potential, E° is the standard cell potential, R is the gas constant, T is the temperature, n is the number of moles of electrons, F is the Faraday constant, and Q is the reaction quotient.
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Adina is stranded on an island in the middle of the ocean. There is one stream on the island but the
water has lots of sand in it. Which technique should she use to remove the sand from the water?
Hint: give the technical term
Answers
Answer:Adina removed the sand, employing a shovel, however she be laborious and therefore the stream will carry off the silt and therefore the sand.
She does not have to be compelled to do something, however to attend.
You fill the metal pot with ocean water and boil the water, the water can turn out to be steam and can move upwards, there you would like to dam the steam victimization the long metal plate, so the steam condenses into pure water droplets.
The metal plate must be inclined so the droplets flow downwardly and at last falls into a clean pot.
Finally you get the water within the clean pot.
Explanation:
Another and short answer:
she can remove the sand , using a shovel , but that will be hard. eventually the stream will carry off the silt and the sand . thus she doesn't have to do anything , but to wait .
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Select all of the combinations of solid-solutions will produce no temperature change. a. Ag-Cu(NO3)2b. Cu-Cu(NO3)2c. Mg-Cu(NO3)2d. Zn-Cu(NO3)2
Answers
The combinations of solid-solutions that will produce no temperature change are b. Cu-Cu(NO₃)₂ and d. Zn-Cu(NO₃)₂.
A solid-solution is a mixture of two or more substances that form a solid-state solution. When two substances form a solid-solution, they may produce a temperature change, which can either be an exothermic or endothermic reaction. An exothermic reaction releases heat energy, while an endothermic reaction absorbs heat energy.
In the given combinations, only the solid-solutions of Cu-Cu(NO₃)₂ and Zn-Cu(NO₃)₂ will not produce any temperature change. This is because both copper and zinc have the same crystal structure and atomic radius as their respective ions in the nitrate solution, resulting in no net energy exchange during the mixing process.
In conclusion, the solid-solutions of Cu-Cu(NO₃)₂ and Zn-Cu(NO₃)₂ will not produce any temperature change, while the other combinations of Ag-Cu(NO₃)₂ and Mg-Cu(NO₃)₂ will produce a temperature change during the mixing process.
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In general, as activation energy increases, reaction rate _____.
A) goes down if the reaction is exothermic.
B) goes down if the reaction is endothermic.
C) stays the same regardless of whether the reaction is exothermic or endothermic.
D) goes down regardless of whether the reaction is exothermic or endothermic.
E) none of the above.
Reaction Rate:
The rate of a reaction shows how fast a reaction is completed. This can be affected by the temperature of the system, and some other factors including stirring, etc. These affect the rate of collision of the particles in the reaction mixture which also affects whether the particles will have good orientation.
Answers
In general, as activation energy increases, reaction rate D: "goes down regardless of whether the reaction is exothermic or endothermic".
The activation energy is the energy required to initiate a chemical reaction by breaking the bonds of the reactants. If the activation energy is high, fewer molecules will have enough kinetic energy to overcome this energy barrier, leading to a lower reaction rate. This is true for both exothermic and endothermic reactions. Therefore, as the activation energy increases, the reaction rate will decrease regardless of whether the reaction is exothermic or endothermic.
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.need this answer asap
Answers
In gases, the particles travel quickly in all directions and regularly collide with one another and the container wall. The particles acquire more kinetic energy and accelerate with rising temperature.
What are gas particles ?There is not much attraction between the particles in a gas. In comparison to the particles in a solid or liquid, they are extremely widely apart and are always moving. The particles simply strike and bounce off of one other when they collide, without engaging in any interaction.
There is no regular structure and the particles in a gas are well separated. Despite having no regular arrangement, fluids are close to one another. Typically in a regular pattern, solids are densely packed.Learn more about Gas particles here: https://brainly.com/question/16982523
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Draw the structure of the major nitration product from the reaction of nitric acid with 1,3‑dimethylbenzene. Show all formal charges
Answers
The 2,4 and 5 positions are accessible for nitration of 1,3‑dimethylbenzene. The final product is shown in the image attached.
What is nitration?Nitration is a type of reaction in which the nitro group (-NO2) is introduced to an aromatic ring. We have to note that in the compound 1,3‑dimethylbenzene, the 2,4 and 5 positions are accessible for nitration as shown.
Hence, the nitration of 1,3‑dimethylbenzene occurs as shown in the image attached with the compound shown being the major product.
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The structure of the major nitration product from the reaction of nitric acid with 1,3‑dimethylbenzene is shown in attached image.
What is nitration?Nitration is a process in which addition of nitro group (-NO₂) is taking place on the substrate molecule.
In the given question 1,3‑dimethylbenzene is the susbtarte in which nitration will be done in the presence of sulphuric acid (H₂SO₄) and nitric acid (HNO₃). Methyl groups which are present in the substrate molecule will behave as an ortho para directing groups as they are electron donating groups. So the major product obtained in the reaction is shown below in image.
Hence the structure of major nitration product is shown below in image.
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What is a chemical properties in science?
Answers
A chemical property is a characteristic of a substance that is observed during a chemical reaction, as opposed to a physical property, which is a characteristic that can be observed without altering the substance's chemical makeup.
A detailed explanation:
Chemical properties describe how a substance reacts with other substances. For example, a substance's flammability, or its ability to burn, is a chemical property. Other examples of chemical properties include a substance's reactivity, toxicity, and acidity or basicity.
Chemical reactions involve changes in the chemical makeup of a substance, and these changes can often be observed through changes in color, temperature, or other physical properties. For example, when iron rusts, it changes from a shiny silver color to a dull red-brown color, indicating a change in the chemical makeup of the iron.
Chemical properties can also be used to identify a substance. For example, a substance's reactivity with certain chemicals or its ability to conduct electricity can be used to identify it. Additionally, the chemical properties of a substance can be used to predict how it will react with other substances.
It's important to note that chemical properties are different from physical properties, which are characteristics of a substance that can be observed without altering its chemical makeup. Examples of physical properties include a substance's color, density, and melting point. While chemical properties describe how a substance reacts with other substances, physical properties describe the substance itself.
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does lead melt into individual atoms or molecules?
Answers
Lead cannot melt at such level, hence it cannot break down into individual atoms or molecules. A change in the bonding of atoms or molecules is referred to as melting.
Lead melts, but how does its molecular structure change?The metallic connections are broken and the atoms are made more mobile by the energy needed to melt the metal. Atoms have the same kinetic energy as they did as a solid at a particular temperature, such as the melting point.
Can atoms melt by themselves?No, an atom cannot be melted. The three common states of matter no longer hold true when you are dealing with so tiny a piece. Atoms do not alter until by nuclear fission or fusion.
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please help!! my grades dying
15 points
Answers
Answers-in-bold:
There are two common temperature scales. On the Fahrenheit scale, water freezes at 32 degrees. The Celsius scale divides the interval between the freezing and boiling points of water into 100 degrees.
Calculate the mass defect and the nuclear binding energy of nitrogen-14.
The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu.
The mass of a nitrogen-14 atom is 14.00307 amu.
The mass defect of nitrogen-14 is
amu. Round to the decimal place.
The nuclear binding energy of one nitrogen-14 atom is
x 10A J. Round to 3 significant digits.
A:
Answers
Answer:
1.62 * 10^-11 J
Explanation:
Nitrogen-14 nucleus has seven neutrons and seven protons. So;
Total mass of protons = 7(1.00728 amu)
Total mass of neutrons = 7(1.00866 amu)
Total mass of nucleons = 7(1.00728 amu) + 7(1.00866 amu)= 14.11158 amu
Mass of Nitrogen-14 nucleus = 14.00307 amu
Mass defect = 14.11158 amu - 14.00307 amu = 0.10851 amu = 1.801852171 * 10^-28 Kg
Binding energy = Δmc^2
Where;
Δm = mass defect
c = speed of light
Binding energy = 1.801852171 * 10^-28 Kg * (3 * 10^8)^2
Binding energy = 1.62 * 10^-11 J
Answer:
0.10851 amu
1.62
-11
Explanation:
Yw
PLEASE HELP!! Which object listed best represents the following energy transformation: electrical -> thermal?
a. flashlight
b. electric saw
c. toaster
d. gas powered scooter
e. the sun
f. wind turbine
g. iPod
h. Stereo Speaker Vibrating
Answers
Answer:
The right option is (c) toaster
6. A diamond contains 5.0 ×10^21 atoms of carbon. What amount(moles) of carbon and what mass (grams) of carbon are in this diamond? *
a. 0.008303 and 0.0997
b. 0.008303g and 0.0997mol
c. 0.008303amu and 0.0997
d. 0.008303 and 0.0997amu
Answers
Answer:
0.008303 mol and 0.0997 g
Explanation:
From Avogadro's hypothesis, we understood that 1 mole of any substance contains 6.022×10²³ atoms.
This implies that 1 mole of carbon also contains 6.022×10²³ atoms.
Next, we shall determine the mole of carbon that contains 5.0×10²¹ atoms. This can be obtained as follow:
1 mole of carbon contains 6.022×10²³ atoms.
Therefore, Xmol of carbon will contain 5.0×10²¹ atoms i.e
Xmol of carbon = 5.0×10²¹ / 6.022×10²³
Xmol of carbon = 0.008303 mole
Therefore, 0.008303 mole of carbon contains 5.0×10²¹ atoms.
Finally, we shall determine the mass of carbon. This can be obtained as follow:
Mole of carbon = 0.008303 mole
Molar mass of carbon = 12.01 g/mol
Mass of Carbon =.?
Mole = mass /Molar mass
0.008303 = mass of carbon/12.01
Cross multiply
Mass of Carbon = 0.008303 x 12.01
Mass of Carbon = 0.0997 g.
What is the compound name of NO3?
Answers
Answer:
NITRATE ION
Explanation:
what is 2100 ÷ 35399 pleasss help me
Answers
Answer:
0.0593237097
Explanation:
what would u add if the soil is too basic~~ ?
Answers
Slaked lime is the ans
thank me later : p
(a) Barium ions are poisonous. Patients with digestive tract problems are sometimes given
an X-ray after they have swallowed a ‘barium meal’, consisting of a suspension of
BaSO4 in water. The [Ba2+(aq)] in a saturated solution of BaSO4 is too low to cause
problems of toxicity.
(i) Write an expression for the solubility product, Ksp, for BaSO4, including its units.
...................................................................................................................................
(ii) The numerical value of Ksp is 1.30 × 10–10. Calculate [Ba2+(aq)] in a saturated
solution of BaSO4.
...................................................................................................................................
...................................................................................................................................
(iii) The numerical value of Ksp for BaCO3 (5 × 10–10) is not significantly higher than
that for BaSO4, but barium carbonate is very poisonous if ingested. Suggest a
reason why this might be so.
...................................................................................................................................
............................................................................
QUESTION NUMBER (b)(iii) and (ii) PLEASE....
Answers
The numerical value of the Ksp of \(BaSO_{4}\) is 1.69 * 10^-20.
What is the Ksp?The Ksp is an equilibrium constant that shows the extent to which a substance is soluble in water. Now consider the fact that \(BaSO_{4}\) is almost insoluble in water.
i) The Ksp of the \(BaSO_{4}\) solution can be obtained from the relation;
Ksp = [\(Ba^{2+}\)] [\(SO_{4}^{2-}\)]
ii) The numerical value of the Ksp is obtained from; [1.30 × 10–10]^2 = 1.69 * 10^-20
iii) The reason for the toxicity of \(BaCO_{3}\) even though it is not more soluble that barium sulfate is that \(BaCO_{3}\) can dissolve in the gastrointestinal tract which is acidic leading to barium poisoning.
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What is the volume of 1.5M HCl needed to acquire 4.5g of HCl?
Answers
Assuming the mass we have is only of HCl, not the whole solution, we can do the following steps:
- Use the molar mass of HCl to see how many moles of HCl correspond to 4.5g of HCl.
- Use the concentration of 1.5 M to see how much volume have the calculated number of moles of HCl.
To calculate the molar mass of HCl, we need the molar masses of H and Cl, which we can get from a periodic table:
\(\begin{gathered} M_H=1.00794g\/mol \\ M_{Cl}=35.453g\/mol \\ M_{HCl}=1\cdot M_H+1\cdot M_{Cl} \\ M_{HCl}=(1\cdot1.00794+1\cdot35.453)g\/mol \\ M_{HCl}=(1.00794+35.453)g\/mol \\ M_{HCl}=36.46094g\/mol \end{gathered}\)So, using it, we can calculate the number of moles of HCl in 4.5g of HCl:
\(\begin{gathered} M_{HCl}=\frac{m_{HCl}}{n_{HCl}} \\ n_{HCl}=\frac{m_{HCl}}{M_{HCl}} \\ n_{HCl}=\frac{4.5g}{36.46094g\/mol}=0.123419\ldots mol \end{gathered}\)Since concentration is number of moles of solute divided by the volume of solution, we have:
\(\begin{gathered} \lbrack HCl\rbrack=\frac{n_{HCl}}{V}_{} \\ V=\frac{n_{HCl}}{\lbrack HCl\rbrack} \\ V=\frac{0.123419\ldots mol}{1.5mol\/L}=0.082279\ldots L=82.279\ldots mL\approx82mL \end{gathered}\)So, to get 4.5 g of HCl from a solution of 1.5 M of HCl, we need approximately 82 mL.
Pls I need help urgently. Find the Lewis dot structure for water and ethanol and examine the structures and identify which part is partial negative and partial positive.
Answers
The Lewis dot structure of water and ethanol are attached in the images below with hydrogen being positive and oxygen negative in water and ethyl part positive and hydroxyl part negative in ethanol.
What are Lewis dot structures?Lewis dot structures are also called as electron dot structures and can be drawn if the molecular formula of a compound is known. It provides information regarding the nature of bond and the position of atoms .
They are also capable of exhibiting the lone pair if any present in a molecule or compound.Lewis defined a base to be an electron pair donor and an acid to be an electron pair acceptor.
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round off .00042557 to three significant digits
Answers
Round off .00042557 to three significant digits is = 0.000426
What is round of value ?If 5, 6, 7, 8, or 9 come after the number you are rounding, round it up. For instance, 40 is the result of rounding 38 to the nearest ten.If the numbers 0, 1, 2, 3, or 4 come after the number, round it down. If 33 is rounded to the nearest ten, it becomes 30.To estimate a certain number in a context, rounding is a process. Look at the next digit in the correct position to determine how to round a number; if it is less than 5, round down, and if it is 5 or more, round up.Given
The digit of 00042557
Three significant digits is 0.000426
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How many moles of NO2 are in a flask with a volume of 28L at a pressure of 121 kPa and a temperature of 45C?
Answers
Answer:
1.2807 moles
Explanation:
From rearranging the equation for the ideal gas equation, you get the equation n=PV/RT, n= moles, P= pressure, V= volume, R= gas constant, T= temperature. Plugging in the numbers and converting kPa to atm and C to K, you get n=1.19418*28/ .0821*318.
Then, you just do the math and get 1.2807 moles.