Answers
Answer:
d) It incorrectly describes the two processes
Hope it helps you
And please mark it as the brainliest answer
Related Questions
If a system absorbs 155.0 kJ of heat from its surroundings and the
system does 45.0 kJ of work on its surroundings, what is the change
in the internal energy of the system, in kJ?
Answers
The change in internal energy of the system is 110 kJ.
What is a change in internal energy?Change in internal energy is the difference between the energy absorbed by the system and the work done by the system.
To calculate the change in the internal energy of the system, we use the formula below.
Formula:
ΔU = Q-W............... Equation 1Where:
ΔU = Change in internal energy of the systemQ = Heat absorbs by the systemW = Work done by the system.From the question,
Given:
Q = 155.0 kJW = 45.0 kJSubstitute these values into equation 1
ΔU = 155-45ΔU = 110 kJ.Hence, The change in internal energy of the system is 110 kJ.
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Astronomers made two observations of the Moon that were several days apart. Their observations are shown in the diagram above. The light part of the Moon appeared to get larger over time. Why did this happen?
Answers
Answer:
Explanation:
As the earth revolves around the sun, and the moon revolves around the earth, the intensity of sunlight hitting the moon changes over time. This explains why we get the phases of the moon. The answer as to why, is because the moon was moving towards a state of being a "full moon."
How is hotter air different than colder air?
A. Hotter air consists of different molecules than colder air.
B. In hotter air, the molecules are closer together and moving more slowly.
C. In hotter air, the molecules are farther apart and moving more rapidly.
D. Hot air is denser than colder air.
Answers
Answer:
C.
Explanation:
The molecules in hot air are moving faster than the molecules in cold air. Because of this, the molecules in hot air tend to be further apart on average, giving hot air a lower density. That means, for the same volume of air, hot air has fewer molecules and so it weighs less.
How is hotter air different than colder air?
Options:- A. Hotter air consists of different molecules than colder air.B. In hotter air, the molecules are closer together and moving more slowly.C. In hotter air, the molecules are farther apart and moving more rapidly.D. Hot air is denser than colder air.Answer:-Option C :- In hotter air, the molecules are farther apart and moving more rapidly.
Explanation :- When temperature rises Kinetic energy of the gases increase when helps them to overcome there interatomic molecules so they move further away from each other Due to increase in Kinetic energy there Velocity ( net ) also increase which helps them to move fast As the particles moves far away there density also decrease as less mass of the gas is present in same volume or we can say same mass as larger volume then the colder one With change in temperature only there energies got changed so we can say hotter and colder air has same molecules is same gas heated or chilledPLEASE HELP ASAP!!!!! What word is the best description for world population growth over the past 200 years?
Question 1 options:
Experimental
Arithmetic
Logarithmic
Exponential
Answers
Answer:
Exponential
Explanation:
Because its the numbers/anything that is becoming more and more rapid.
A 150 g sample of a compound is comprised of 44.07% C, 8.98% H and the remainder is O by mass. What is the compound's empirical formula
Answers
With the compounds sample mass at 150g, and we are left to decipher the proportion of Carbon, Hydrogen, and Oxygen amount, The compound's empirical formula is mathematically given as
Ep=C5H12O4
What is the compound's empirical formula?Question Parameters:
A 150 g sample of a compound is comprised of 44.07% C, 8.98% H and the remainder is O by mass
Generally, the equation for the compound is mathematically given as
CxHyOz
Where
Therefore
O percentage is
Po100-(44.07+8.98)
Po=46.95
For Cx we determine the minimum value
hence
x=1.25*4
x=5
For Hy
y=3.0*4
For Oz
y= 1*4
y=4
In conclusion, the empirical formula is
C5H12O4
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How do I find the moles of OH- which reacted (mol) in the titration. Table Attached
Answers
Answer:
It is equal to the number of moles of acid that reacted. When Oxalic acid is your limiting reactant it is the # of moles of oxalic acid used. When NaOH is your limiting reactant it is equal to the number of moles of NaOH used.
The moles of OH⁻ that reacted in the titration can be found by;
Determining the number of moles of oxalic acid used in the titrationThe moles of OH⁻ used in the titration experiment is dependent on the number of moles of the limiting reactant, used during the Titration in the laboratory.
From the data contained in the table, the limiting reactant is the oxalic acid. therefore the number of moles of OH⁻ is equal to the number of moles of oxalic acid used during titration.
Hence we can conclude that the moles of OH⁻ that reacted in the titration can be found by determining the number of moles of oxalic acid used in the titration
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As the kinetic energy of particles of matter increases the distance between the particles what
Answers
Answer:
causing the particles to move faster and farther apart.
Explanation:
hope this helps
As the kinetic energy possessed by the particles of matter increases and so does the distance, hence particles tend to move faster.
What is kinetic energy?Kinetic energy is "a form of energy that an object or a particle has by reason of its motion".
What is particles?Particle is "a small portion of matter".
What is matter?
Matter is "anything that occupies space and has mass".
What is distance?
Distance of "an object can be defined as the complete path travelled by an object".
Hence, the kinetic energy of particles of matter increases with the increase in the distance between the particles.
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1. Intrusive igneous rocks form from
A. magma that cools underground
B. lava that cools on Earth's surface
C. sediment that undergoes heat and pressure
PLS HELP
Answers
Answer:
a
Explanation:
Answer:
a
Explanation:
These rocks form underground by magma as it cools down.
HOPE IT HELPED
Calculate the percentage of sulphur in MgSO4.2H₂O
Answers
Answer:
[tex]Molecular \: mass \: of \: MgSO_{4}.2H_{2}O\:, \\ \\ ⇝ 24 + 32 + 16 \times 4 + 2(2 \times 1 + 46) \\ \\ ⇝ 24 + 32 + 64 + 36 \\ \\ ⇝156 \: u[/tex]
[tex]\bold\pink{Percentage \: of \: substance \: in \: compound} \\ \\ \bold\pink{⇝ \frac{mass \: of \: substance}{mass \: of \: compound} \times 100}[/tex]
[tex]\% \: age \: of \: Sulphur \: (S) = \frac{32}{156} \times 100 \\ \\ ⇝0.205 \times 100 \\ \\ \fbox\blue{\:⇝ 20.5\%\:}[/tex]
hope helpful ~
Answer:
20.51%
Explanation:
Mass of S = 32g
Mass of MgSO₄ x 2H₂O = 24 + 32 + 64 + 36 = 56 + 100 = 156
%S = 32/156%S = 8/39%S = 20.51%explain what role trees play in one of the three biogeochemical cycles: water or carbon or nitrogen.
Answers
Answer:
The real answer is carbon dioxide. they breath carbon and let out oxygen for us to breath
.When in lab what is the policy on tasting chemicals?
Answers
Answer:
You shouldn't smell nor taste chemicals. They are dangerous and if inhaled or swallowed, they will cause many health issues.
In the polar molecule HBr, what charge does the H bear
Answers
Considering the definition of polar molecule, Br has a negative partial charge and H a positive partial charge.
The bond dipole moment can then be defined as the magnitude of the polarity in a bond. This moment represents the distribution of electron density in a bond.
The distribution of charges is due to the fact that the atoms that form them have different electronegativity, in such a way that when a covalent bond is created and the electrons are shared, the electrons of the bond are attracted with different force by the atoms that share them.
Then, a polar molecule is one that is neutral, that is, it does not have a net charge. But it has an internal distribution of charges that form a partially positive region and a partially negative region.
That is, polar bonds are established between atoms of different electronegativity, so that the atom with higher electronegativity will attract the electrons towards itself, giving rise to two opposite charges in the bond and creating a negative charge on the atom because the electrons have negative charge.
In this way, in a polar molecule there is separation between positive and negative charges. The bonds will be the more polar the greater the electronegativity difference between the bonded atoms.
In this case, bromine Br has a higher electronegativity and attracts electrons shared with hydrogen H more strongly. Then Br has a negative partial charge and H a positive partial charge.
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https://brainly.com/question/15326940?referrer=searchResultsHelpp me please it’s hard
Answers
Answer:
I say A not only because it's a repeat of B but because it also doesn't talk about in which direction the velocity is.
Explanation:
Hope this helped.
A brainliest is always appreciated.
what is the biggest planet on earth im giving branlest to the firsh 1 who answers and 100 coins
Answers
Answer:
Jupiter
Biggest Planets In Our Solar System
Explanation:
hopes this help
Answer:
Explanation:
If the question is truly the biggest planet on earth, then the answer is earth.
But if the question is the biggest planet in the solar system, then it is Jupiter.
Please help! Each color of.light has a specific amount of energy. A
hydrogen atom will absorb and emit red, blue-green, blue, and violet light but not
yellow or orange light. Explain this phenomenon
Answers
Answer:
only certain wavelengths of the light can be absorbed.
There are no transitions in the hydrogen atom that corresponds to the wavelength of yellow or orange light.
Each color corresponds to a particular wavelength. The wavelengths that are observed for a given atom depends on the transitions that are possible for electrons of the atom.
In the hydrogen atom, there is no transition whose wavelength corresponds to the wavelength of yellow or orange light. None of the lines in the hydrogen spectrum has such wavelength.
For instance, yellow light corresponds to 590 nm - 560 nm but this wavelength is missing from the spectrum of hydrogen(crosscheck in the image attached).
As such, we do not see yellow or orange lights in the hydrogen spectrum.
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What is the H30* concentration of 0.027 M Ca(OH)2?
Select one
O 3.9 x 10-13 M.
0 0.027 M
O 1.9 x 10-13 M
0 3.7 x 10-13 M
Answers
Answer:
1.9 x 10⁻¹³M
Explanation:
Given 0.027M Ca(OH)₂(aq) => 0.027M Ca⁺²(aq) + 2(0.027M) OH⁻(aq)
2(0.027M) OH⁻(aq) = 0.054M OH⁻(aq).
from [H⁺][OH⁻] = 1 x 10⁻¹⁴ at STP Conditions (0°C, 1Atm)
∴{H⁺] = [H₃O⁺] = (1 x 10⁻¹⁴/0.054)M = 1.85 x 10⁻¹³M or 1.9 x 10⁻¹³at 0°C & 1Atm pressure.
• I just summed down the answer from the other guy in case people didn’t get the answer
Have a nice day :)
What mass of sugar C12H22O11 is required to provide 2.50 x 1023 molecules of O2?
Answers
Answer:
342.29648 g/mol
Explanation:
Mass of sugar C₁₂H₂₂O₁₁ is required to provide 2.50 x 10²³ molecules of O₂ is 11.84.
What is mole concept?Avogadro's number is the number of units in one mole of any substance and equals to 6.02214076 × 10²³. The units can be electrons, atoms, ions, or molecules.
No. of moles is defined as a particular no. of particles that we can calculate with the help of Avogadro’s number.
Mass of a particular product is also find out by stoichiometry of a reaction as per the no. of mole given in the reaction.
Reaction is-
C₁₂H₂₂O₁₁ + 12O₂ → 12CO₂ + 11H₂O
1 mole of C₁₂H₂₂O₁₁ forms 12 moles of O₂.
12 × 6.02214076 × 10²³ molecules of O₂ formed by 342.3 g of C₁₂H₂₂O₁₁.
1 molecule of O₂ formed by 4.73 × 10⁻²³ g of C₁₂H₂₂O₁₁.
2.50 × 10²³ molecules of O₂ formed by 11.84 g of C₁₂H₂₂O₁₁.
Therefore, Mass of sugar C₁₂H₂₂O₁₁ is required to provide 2.50 x 10²³ molecules of O₂ is 11.84.
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1.How is sunlight different from light produced by a light blub or by a fluorescent light blub?
2.What are some examples of light sources that you have seen where the light emitted was a color other than white?
3.What are some examples you have seen where white light was split into different colors?
Answers
Answer:
lemme slurp them juices out of that p*ssy. You must taste sweet.
Explanation:
Kc for the reaction of hydrogen and iodine to produce hydrogen iodide.
H2(g) + I2(g) ⇌ 2HI(g)
is 54.3 at 430°C. Calculate the equilibrium concentrations of H2, I2, and HI at 430°C if the initial concentrations are [H2] = [I2] = 0 M, and [HI] = 0.391 M.
Answers
Answer:
[tex][H_2]_{eq}=0.183M[/tex]
[tex][I_2]_{eq}=0.183M[/tex]
[tex][HI]_{eq}=0.025M[/tex]
Explanation:
Hello.
In this case, for this equilibrium problem, we first realize that at the beginning there is just HI, it means that the reaction should be rewritten as follows:
[tex]2HI\rightleftharpoons H_2+I_2[/tex]
Whereas the law of mass action (equilibrium expression) is:
[tex]Kc=\frac{[H_2][I_2]}{[HI]^2}[/tex]
That in terms of initial concentrations and reaction extent or change [tex]x[/tex] turns out:
[tex]Kc=\frac{x*x}{([HI]_0-2x)^2}\\\\54.3=\frac{x^2}{(0.391M-2x)^2}[/tex]
And the solution via solver or quadratic equation is:
[tex]x_1=0.183M\\\\x_2=0.210M[/tex]
Whereas the correct answer is 0.183 M since the other value yield a negative concentration of HI at equilibrium (0.391-2*0.210=-0.029M).This, the equilibrium concentrations are:
[tex][H_2]_{eq}=0.183M[/tex]
[tex][I_2]_{eq}=0.183M[/tex]
[tex][HI]_{eq}=0.391M-2*0.183M=0.025M[/tex]
Regards.
Convert the following number of moles of chemical into its corresponding mass in grams.
3. 0.031 moles of Li
Answers
This is because the molar mass of Lithium is 6.94
the molar mass * the amount of moles gives you the weight in grams
6.94*0.031=0.2151
Short Essay: What does the daily number of the rona virus information tells if about Louisiana’s population?
Answers
Answer:
32
Explanation:
What is a phase diagram?
Answers
Name the element in the fourth period of the periodic table with six 4p electrons.
element name:
Name the element in the third period of the periodic table with two 3p electrons.
element name:
Answers
Answer:
- Krypton.
- Silicon.
Explanation:
Hello.
In this case, since the first element's last term in the electron configuration is 4p⁶, by looking at the fourth period, the only element having sic 4p electrons is Kr as its electron configuration is:
[tex]Kr^{36}:1s^2,2s^2,2p^6,3s^2,3p^6,4s^2,3d^1^0,4p^6[/tex]
In the second case, the element of the third period having two 3p electrons or [tex]3p^2[/tex] the last term in its electron configuration is silicon as shown below:
[tex]Si^{14}:1s^2,2s^2,2p^6,3s^2,3p^2[/tex]
Best regards.
Which compound has the highest melting point?
Al2(CO3)3
C12H22O11
C8H18
H2O
Answers
Answer:
Al2(CO3)3 (A)
Explanation:
i think thats the answer
Aluminum carbonate is indeed a carbonate solution of aluminum that is intended for oral intake. It should be the carbonate salt type of aluminum that's also intended for oral consumption.
It is used to alleviate the symptoms of excess stomach acid in situations like heartburn, acid reflux, acid indigestion, upset stomach, or stomach ulcers.It is a water-insoluble Aluminum source that, when heated, rapidly converts to other Aluminum complexes like oxide.Therefore, the answer is "[tex]\bold{Al_2(CO_3)_3}[/tex] ".
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At a maximum, an f-orbital can hold_____ electrons, a d-orbital can hold_____ electrons, a p-orbital can hold ________ electrons and an s-orbital can hold ________ electrons.
Answers
f-orbitals can hold 14 electrons
d-orbitals can hold 10 electrons
p-orbitals can hold 6 electrons
s-orbitals can hold 2 electrons
A pharmaceutical company needs 5.00 moles of epinephrine (C9H13NO3) for a new EpiPen they hope to put on the market. How many grams of adrenaline will the lab need for a shipment of 30.0 Epipens to be made?
Answers
Answer:
5496 g of epinephrine
Explanation:
From the question, 5.00 moles of epinephrine is required to make Epipen.
Molar Mass of epinephrine = 183.20 g/mol
mass of 5 moles of epinephrine= [tex]5.00 moles * 183.20 g/mol=916 g[/tex]
Therefore, 30.00 moles of epinephrine needs 30.00 * 916/5 =5496 g of epinephrine
The three states of matter differ primarily in terms of shape and volume. Describe solids, liquids and gases in these terms.
Answers
Answer:
solids have definite shape and volume. liquid have definite volume but not definite shape. gases do not have definite volume as well as definite shape.
Indicate whether the following compound is saturated or unsaturated.
Answers
The compound is unsaturated due to the presence of double bond.
What is saturated and unsaturated compound?A saturated compound is a compound that have carbon-carbon single bonds while on the other hand, Unsaturated compounds are the compunds having double bonds and triple bonds. We can see that there is double bond between two carbon atoms so we can conclude that the compound is unsaturated due to the presence of double bond.
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what is a compound? Claim
Answers
Answer: A compound is a material formed by chemically bonding two or more chemical elements. The type of bond keeping elements in a compound together may vary: covalent bonds and ionic bonds are two common types. The elements are always present in fixed ratios in any compound.
Explanation:
When a 27.7 mL sample of a 0.400 M aqueous hypochlorous acid solution is titrated with a 0.335 M aqueous potassium hydroxide solution, what is the pH at the midpoint in the titration
Answers
With a 27.7 mL sample of a 0.400 M aqueous hypochlorous acid solution titrated with a 0.335 M aqueous potassium hydroxide solution, the pH value is mathematically given as
pH=12.90
What is the pH at the midpoint in the titration?Moles of HClO=0.329*21.5
Moles of HClO=7.0735
and
Moles of KOH=0.456*23.3
Moles of KOH=10.6248
Hence
The net mole of KOH=10.6248-7.0735
The net mole of KOH=3.5513
Volume of solution=21.5+23.3
Volume of solution=44.8ml
Generally, the equation for the Concentration of KOH is mathematically given as
CKOH=mole/volume
Therefore
CKOH=3.5513/44.8ml
CKOH=0.07927M
In conclusion,
pOH=-log{OH-}
pOH=-log{0.07927}
pOH=1.10
pH=14-110
pH=12.90
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