The enthalpy refers to the thermodynamic characteristics that have chemical systems associated with their internal energy.
What is enthalpy?The enthalpy refers to the thermodynamic features of the chemical systems associated with the energy of such systems.
Enthalpy is used to estimate the ability of the system to perform work and release energy in the form of heat.
It is well known that different types of chemical reactions may exhibit different enthalpies, which can be estimated by the internal energy, pressure of the system and volume.
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Answer:
Here you are <3
Explanation:
I attached the one I just submitted
what is safe storage of produced materials
Answer:
Stacking bags and bundles.
Explanation:
Interlock them in rows to ensure they're secure.
Answer:
Material Storage Facilities means an uncovered area used on a permanent basis for outside
Explanation:
Material Storage Facilities means an uncovered area where bulk materials (liquid, solid, granular, etc.) are stored in piles, barrels, tanks, bins, crates, or other means.
Additional Benchmarks for Federal, State, or Municipal Facilities with Incidental Solid De-Icing Material Storage Facilities monitoring under the requirements of subparagraph (D)(ii) above shall not be subject to Benchmark requirements for Chloride or Cyanide.
Directors are fully briefed on all business related matters, risk assessment and new initiatives proposed by the Company.
Help please!
__________ is caused by a bacteria that can be transmitted by a flea bite, contact with an infected person, or via airborne droplets. Symptoms are lymph glands that are swollen and painful ("buboes", red spots that turn black)
A ) Tuberculosis
B ) Syphilis
C ) Botulism
D ) Bubonic Plague
Answer:
Bubonic plague is the correct answer!!!
Explanation:
mark me brainliest
Answer:
The answer is Bubonic Plague
if you add 3 mL of water to 1 ml of nadh mix and get an observance of 0.2 what is the concentration of the original nadh solution
Answer:
you are looking at the official nkana fc website
How many moles of carbon are present in 1.50mole of aspirin , C_{9}*H_{8} * O_{4}
Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.
What is a mole?The mole is the SI base unit for the amount of matter. 1 mole of particles contains a number of Avogadro's particles.
We have 1.50 moles of aspirin, C₉H₈O₄. According to the molecular formula, the molar ratio of C₉H₈O₄ to C is 1:9.
1.50 mol C₉H₈O₄ × (9 mol C/1 mol C₉H₈O₄) = 13.5 mol C
Given the molecular formula of aspirin, C₉H₈O₄, in 1.50 moles of aspirin there are 13.5 moles of carbon.
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why is it necessary to standardize a secondary standard before use?
As the name implies, a secondary standard is used by standard laboratories, which include companies involved in the preparation of reagents and kits, as well as laboratories responsible to produce quality control material for use by other laboratories. They use the primary standard as the primary calibrator or primary reference material, and they calibrate their instruments against it. Smaller labs use secondary standards to calibrate control material for analysis of unknown concentrations. For smaller labs, secondary standard serves as an external quality control. As a result, it is essential that the secondary standard be standardized against the primary standard before it can be applied.
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What is The fmu (grams/mole) for disulfur hexachloride *the formula for it is S2Cl6*
Hexasulfur Dichloride
Name: Hexasulfur Dichloride
Formula: S2Cl6
Molar Mass:276.848
Example Reactions:
• S2Cl6 + 4H2O = 2SO2 + 6HCl + H2
Determine whether aqueous solutions of the following salts are acidic, basic, or neutral: (a) Al(NO3)3 (b) RbI (c) KHCO2 (d) CH3NH3Br
The aqueous solution and their respective properties include the following:
Al(NO3)3 - acidicRbI - neutralKHCO2 - basic CH3NH3Br - acidicWhat is pH?This is defined as the degree of acidity or alkalinity of a substance and pH from 1.0 - 6.9 is acidic, 7 is neutral while 7.1 - 14.0 is basic.
The aqueous solutions and their appropriate pH can be seen above which is the right choice.
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What is the mass of 15100 mL of oxygen gas at STP?
Answer:
02 has a mass of 1.78 g.
Explanation:
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What environmental change is shown in the image that might affect the survival of animals
A. Increased space
B. Increased predators
C. Lack of food
D. Pollution
Answer:
it thinks it pollution
Explanation:
hope that helps
A reaction rate increases by a factor of 655 in the presence of a catalyst at 37°C. The activation energy of the original pathway is 106 kJ/mol. What is the activation energy of the new pathway, all other factors being equal? Group of answer choices 89.3 kJ/mol 16,600 kJ/mol 89.3 J/mol 16,600 J/mol
For a reaction rate that increases by a factor of 655 in the presence of a catalyst at 37°C, the activation energy of the new pathway is mathematically given as
Ea2=89.28JKoule/mol
What is the activation energy of the new pathway, all other factors being equal?Generally, the equation for the rate constant is mathematically given as
K=Ae^{Ea1/Rt}
Therefore
[tex]\frac{1}{655}=\frac{1}{8.31*3.10}(Ea2-105000)[/tex]
Ea2=89286.083Joule/mol
In conclusion, the activation energy
Ea2=89.28JKoule/mol
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In cells, __________ are proteins that are needed to lower the amount of energy required to start chemical reactions
Answer: I think it’s enzymes
Explanation:
According to the given equation, how many moles of O, are required to react with 4.71 moles of C4H10?
2C4H10 + 1302 —8CO2 + 10 H
According to the given equation, 2C4H10 + 1302 — 8CO2 + 10H, 2 moles of O are required to react with 4.71 moles of C4H10.
How to calculate number of moles?The number of moles of a compound can be calculated stoichiometrically as follows:
The balanced chemical equation is given as follows:
2C4H10 + 1302 — 8CO2 + 10H
Based on the above equation, 2 moles of C4H10 reacts with 13 moles of O
Therefore; 4.71 moles of C4H10 will react with 4.71 × 6.5 = 30.62 moles of O
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Answer: 30.6
Explanation:
Find the acceleration of the 2 kg block in the following diagram. ( Hint find the net force!)
The acceleration of the block will be -2 m/s² in the backward direction.
What is force?
Force is defined as the product of mass of the body and the acceleration with which it is moving. Mathematically -
F = ma
It is a vector quantity. In the three dimensional coordinate system, the force vector can be resolved as -
[F] = F[x] a[x] + F[y] a[y] + F[z] a[z]
Given is a diagram in which two forces are acting on a block.
We can write -
Force 1 on block [F1] = 4 a[x]
Force 2 on block [F2] = 8 (- a[x]) = - 8 a[x]
Resultant of forces [F] = [F1] + [F2] = 4 a[x] + ( - 8 a[x]) = - 4 a[x]
Now, we know that -
F = MA
A = F/M
In vector form, acceleration will be -
[A] = - 1/m × (4 a[x])
[A] = -1/2 × (4 a[x])
[A] = - 2 a[x]
Therefore, the acceleration of the block will be -2 m/s² in the backward direction.
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Which pictures show the car at zero acceleration? A. Picture 1 only. B. Pictures 1 and 3. C. Picture 2 and 4. D. Picture 4 only.
Picture 1 shows choice B
Explanation:
picture 1 shows the car to which the net force is a zero
298K is equivalent to how many degrees Celsius?
Explain the steps
Answer:
24.80°C
Explanation:
hope it helps...!!!
what is the volume of
NH4 NO3(s) — N2O(g) + 2H2O(g)
Answer:
Explanation:
NH4NO3(s) N2O(g) + 2H2O(g) What is the total volume of gases produced at 546 K and 1.00 atm pressure when 240 g of ammonium nitrate undergoes the above decomposition reaction? A) 9 × 22.4 L B) 3 × 22.4 L C) 12 × 22.4 L D) 18 × 22.4 L E) 6 × 22.4 L
What type of reaction is 2NaBr+Cl2-NaCl+Br2
Answer:
An anionic single replacement reaction.
Explanation:
Hope this helps!!!
Answer:
Substitution or Displacement maybe?
What is molarity of 47.0 g KCl dissolved in enough water to give 375 mL of solution?
This question provides us –
Weight of [tex] \bf KCl [/tex] is = 47 gVolume, V = 375 mL__________________________________________
Molar Mass of [tex]\bf KCl [/tex] –[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 39.0983 \times 35.453 [/tex]
[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf 74.5513[/tex]
Using formula –
[tex]\qquad[/tex] [tex]\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W\times 1000}{MV}}[/tex]
[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 47 \times 1000}{74.5513\times 375}[/tex]
[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{47000}{27956.7375}[/tex]
[tex]\qquad[/tex] [tex]\twoheadrightarrow\bf Molarity _{(Solution)} = \cancel{\dfrac{47000}{27956.7375}}[/tex]
[tex]\qquad[/tex] [tex] \twoheadrightarrow\bf Molarity _{(Solution)} = 1.68117M [/tex]
[tex]\qquad[/tex] [tex]\pink{\twoheadrightarrow\bf Molarity _{(Solution)} = 1.7M} [/tex]
Henceforth, Molarity of the solution is = 1.7M___________________________________________
How can you use a barium chloride solution to help identify a sulfate solution?
answer explanation:
Sulfate ions in solution, SO 4 2 -, are detected using barium chloride solution. The test solution is acidified using a few drops of dilute hydrochloric acid, and then a few drops of barium chloride solution are added. A white precipitate of barium sulfate forms if sulfate ions are present.Answer:
Testing for sulfate ions
Sulfate ions in solution, SO 4 2 -, are detected using barium chloride solution. The test solution is acidified using a few drops of dilute hydrochloric acid, and then a few drops of barium chloride solution are added. A white precipitate of barium sulfate forms if sulfate ions are present.
Explanation:
2. Water vapor in the atmosphere is the source of
Answer:
Warmth (in addition to sunlight) at the Earth's surface.
Explanation:
Heat radiated from Earth's surface is absorbed by water vapor molecules in the lower atmosphere. The water vapor molecules, in turn, radiate heat in all directions. Some of the heat returns to the Earth's surface. Thus, water vapor is a second source of warmth (in addition to sunlight) at the Earth's surface.
As a chemical energy is converted into heat energy during a reaction the total energy of the system
When a chemical energy is converted to hear during a chemical reaction, the total energy of the system remain constant.
Law of conservation of Energy?Law of conservation of energy state that the today energy interacting with bodies in a isolated system remain constant
the Law of Conservation state that the total energy in a system remain unchanged, and that oftentimes a chemical reaction will absorb or release energy in the form of heat, light, or both.
Therefore, The total energy of the system remain constant.
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What volume of .15M NaOH could be produced with only 5 grams of NaOH and water?
The volume of 0.15M NaOH that could be produced with only 5 grams of NaOH and water is 0.83L.
How to calculate volume?The volume of a substance can be calculated using the following expression:
Molarity = number of moles ÷ volume
The number of moles of NaOH can be calculated by dividing the mass of NaOH by its molar mass.
Molar mass of NaOH = 40g/mol
n = 5/40
n = 0.125moles
Volume of NaOH = 0.125mol ÷ 0.15M
Volume = 0.83L
Therefore, the volume of 0.15M NaOH that could be produced with only 5 grams of NaOH and water is 0.83L.
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At 4.5 atm of pressure, the solubility of a gas is 9.5 g/L.
How much gas, in grams, will dissolve in 1 L if the pres.
sure is reduced by 3.5 atm?
For a gas at 4.5 atm of pressure, the solubility of a gas is 9.5 g/L.
How much gas, in grams, is mathematically given as
s2=8.3782grams
What is the amount of gas in grams?Generally, the equation for the is mathematically given as
Si /S2 √P1/√P2
Therefore
[tex]s2=9.5*\sqrt{3.5}/\sqrt{4.5}[/tex]
s2=8.3782g
In conclusion. The solubility is
s2=8.3782g
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Spell out the full name of the compound?
How do i solve this?
Draw the product of this reaction. Ignore inorganic byproducts.
The compound is formed by addition reaction. The product is showed in the image attached.
Addition reactionThe term addition reaction refers to a type of reaction in which a compound is added across the multiple bond. In this case, the iodine molecule is added to the olefinic bond as shown.
The structure of the product formed has been attached to this answer. The product is formed by addition across the double bond.
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How many kJ of heat do you need to raise the temperature of 200 g of Aluminum from 80 °C to 100 °C?
Remember to convert your answer to kJ. Round your answer to two decimal places.
Answer:
0.01
Explanation:
100 -80=20
200/20=10/1000=0.01kj
Determine the difference between archaea and bacteria. (1 point)
All bacteria are unicellular organisms, while some archaea are multicellular.
Archaea live in extreme environments, while bacteria can be found in most places on Earth.
Bacteria and archaea have different shapes.
Archaea is the domain of life that includes the plant and animal kingdoms, while the bacteria domain includes fungi and protists.
Answer:
I have this work and I'm in 5th grade
Explanation:
Answer:
Archaea live in extreme environments, while bacteria can be found in most places on Earth.
Explanation:
Doing a the test now and this is the answer.
What temperature creates hail
Answer:
32 °F
Formation. Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing 0 °C (32 °F).
Explanation:
brainlist me and that's all I know and we have the same module I guess
energy contained in the
and
15. The energy transformation in a flashlight is from
battery to
energy in the circuit, to
energy released by the light bulb.
Answer:
yes of course is true the
Which of the following represents the velocity of a moving object?
Select one:
40 m north.
40.
40 m/s north.
40 m/s.
Answer:
The correct answer would be 40 m/s
Explanation:
The reason 40 m/s is the correct answer is because m/s stands for meters per second.
Hope this helps you with what you're working on! :D
Answer:
40 m/s north
Explanation:
Velocity is a vector quantity, so it have both direction and magnitude.