For a particular process, q = 25 kJ and w = –15 kJ. Which of the following statement(s) is/are true?
A. Work is done by the system on the surroundings.
B. The temperature of the surroundings increases.
C. The internal energy of the system increases.
D. The process is exothermic.
E. Statements A and B are true.
F. Statements A and C are true.
G. Statements C and D are true.
Answers
For the given question, statements A and B are true. So, Option E is correct as the work done given is negative.
How to calculate the work done with respect to the surroundings?According to the First Law of Thermodynamics, energy can only be changed from one form to another through the interplay of heat, work, and internal energy. Under no circumstances can energy be created or destroyed. It can be represented as:
ΔU = q + w
where,
ΔU = Total internal energy of the system
q = the heat that is transferred from a system to its surroundings
w = work done on the system or by the system
It is given in the question that q = 25 kJ and w = -15 KJ
So we get from the above equation-
ΔU = 25 - 15 = 10 KJ
The negative amount of heat that the environment has absorbed will be the value of internal energy.
Thus, the negative sign of work done shows that the work is done by the system on the surroundings while increasing the temperature of the surroundings.
Know more about the work done at:
https://brainly.com/question/29181679
#SPJ1
Related Questions
What does heat mean in chemistry
Answers
Answer:
Heat is the transfer of energy that results from the difference in temperature between a system and its surroundings. At a molecular level, heat is the transfer of energy that makes use of or stimulates disorderly molecular motion in the surroundings.
Explanation:
Rough ER is connected to the nucleus membrane and to
Answers
Rough ER is connected to the nuclear membrane and is responsible for the synthesis and processing of proteins.
The rough endoplasmic reticulum (ER) is a network of membrane-bound sacs and tubules that is studded with ribosomes on its surface. These ribosomes are responsible for protein synthesis. The rough ER is connected to the nuclear membrane because it receives instructions for protein synthesis from the DNA in the nucleus. This connection allows for the efficient transfer of genetic information from the nucleus to the rough ER.
Once the ribosomes on the rough ER synthesize proteins, the rough ER is also involved in the processing and modification of these proteins. It helps in folding the newly synthesized proteins into their functional three-dimensional shapes and also adds various modifications such as glycosylation (the addition of sugar molecules) or signal sequences that target the proteins to specific locations within or outside the cell.
After processing, the proteins may be transported to other parts of the cell or exported to the cell membrane or extracellular space. The connection between the rough ER and the nuclear membrane ensures a coordinated flow of genetic information and protein synthesis, allowing the cell to efficiently carry out its functions.
for such more questions on proteins
https://brainly.com/question/30245761
#SPJ8
41
The flow of rivers is affected by natural environmental conditions and human activities.
Which of the following human activities would result in the most impact on the flow of
water in a river?
A. The release of water from a water treatment plant into the river
B. The development of a shopping center along the riverbank
C. Harvesting trees from a forest along the riverbank
D. Constructing a dam in the river
Answers
B. The development of a shopping center along the riverbank is the following human activities would result in the most impact on the flow of water in a river
How do factors can impact way water flows?By building dams to store water and by taking water for household, commercial, and agricultural uses, humans actively alter the dynamics of the water cycle. Water demand and supply are expected to be even more impacted by climate change.
Human development, including population increase, reliance on fossil fuels, urbanisation, intercontinental trade, and industrial and agricultural emissions, is typically the cause of environmental changes in rivers.
Acid rain allows nitrous oxide and sulphur dioxide from industries and power plants to infiltrate river systems. In certain places, sewage and wastewater are dumped into rivers. All creatures, from algae to vertebrates, are impacted by pollution when the pH of the water is lowered. As pH falls, biodiversity declines.
learn more about human activities refer
https://brainly.com/question/25213840
#SPJ9
A student observes the phenomenon where a straw has a different appearance when placed in water. Once this was noted by the student, they then immediately thought about why they have been unable to successfully catch fish when spearing them in the water. Relate these two phenomenon and select ALL statements that apply to the phenomena described here.
A)The water distorts the image of the fish so that its image is inverted.
B)The student is not aiming correctly due to refraction of the fish in the water.
C)The water magnifies the image, making the target fish look bigger than it actually is.
D)The light waves travel at a different speed in water and make the fish appear farther away.
E)The diffraction of the light around objects flips the image from left to right, making aiming for fish more of a challenge.
Answers are B and D
Answers
Answer:
b, and d
Explanation:
if the student did not aim correctly, and for d if the light waves travelled differently
Can someone help me over here? I need an negative charge and also another thing is that in a question it asked me to use something that would represent an ion. I’m not sure on what to choose either Hydrogen or Helium but just please send help. Please just please help me I NEED URGENT HELP :(
Answers
Explanation:
From the image given;
Number of Protons = 1
Number of Electrons = 1
Number of Neutrons = 0
Positive Charge (From the protons) = + 1
Negative charge (From the electrons) = -1
Atomic mass = Mass of Proton + Mass of Neutron = 1.00727647 amu + 0.000549 amu = 1.00784 amu
Overall Charge = Positive charge + Neutral charge = 1 -1 = 0 (Neutral atom)
What is the poH of a
6.5 x 10-12 M OH solution?
pOH = [?]
Answers
Answer:
\(pOH=11.2\)
Explanation:
Hello,
In this case, by knowing that the pOH is defined in terms of the concentration of OH⁻ as shown below:
\(pOH=-log([OH^-])\)
We directly compute with the given concentration:
\(pOH=-log(6.5x10^{-12})\\\\pOH=11.2\)
Moreover, fur such pOH, the pH will be:
\(pH=14-11.2=2.8\)
Which means that such solution is an acid solution.
Best regards.
Answer:
11.2
Explanation:
What is the concentration (molarity) of a solution of NaCl if 350. mL of a 2.5 M NaCl solution is diluted to a total volume of 5.0 mL? (NEED HELP ASAP)
Answers
The concentration (molarity) of the final NaCl solution is 175 M.
To find the concentration (molarity) of the final NaCl solution, we can use the equation:
M1V1 = M2V2
Where M1 is the initial concentration, V1 is the initial volume, M2 is the final concentration, and V2 is the final volume.
In this case, we have an initial NaCl solution with a concentration of 2.5 M and a volume of 350 mL (0.350 L). We are diluting this solution to a total volume of 5.0 mL (0.005 L).
Plugging these values into the equation, we have:
(2.5 M) * (0.350 L) = M2 * (0.005 L)
Simplifying the equation:
0.875 = 0.005 * M2
Dividing both sides by 0.005:
M2 = 0.875 / 0.005
M2 = 175M
For such more questions on molarity
https://brainly.com/question/30704561
#SPJ8
Increased concentrations of greenhouse gases will lead to HIGHER global temperatures.
True
or
False
Answers
Answer:
\(\huge\boxed{\sf True}\)
Explanation:
If the concentrations of greenhouse gases keep increasing, They will absorb more and more long wave energy coming from the sun and radiating from the earth's surface and thus will cause an increase in temperature.
\(\rule[225]{225}{2}\)
Hope this helped!
~AH180790% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
What is the purpose of the scientific method?
Answers
Answer:
C. To remove any source of bias in an experience
Milk of magnesia, which is an aqueous suspension of magnesium hydroxide, is used as an antacid in the reaction below. How many molecules of HCl would have to be present to form 34.52 g of MgCl₂?
Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)
Answers
Approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.
To determine the number of molecules of HCl required to form 34.52 g of MgCl₂, we need to use the molar mass and stoichiometry of the balanced equation:
Mg(OH)₂(s) + 2 HCl(aq) → 2 H₂O(l) + MgCl₂(aq)
The molar mass of MgCl₂ is 95.21 g/mol.
First, we need to calculate the number of moles of MgCl₂ formed:
Moles of MgCl₂ = mass of MgCl₂ / molar mass of MgCl₂
Moles of MgCl₂ = 34.52 g / 95.21 g/mol
Moles of MgCl₂ = 0.363 mol
According to the balanced equation, the stoichiometric ratio between HCl and MgCl₂ is 2:1. Therefore, the moles of HCl required can be calculated as follows:
Moles of HCl = 2 * Moles of MgCl₂
Moles of HCl = 2 * 0.363 mol
Moles of HCl = 0.726 mol
To calculate the number of molecules, we need to use Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.
Number of molecules of HCl = Moles of HCl * Avogadro's number
Number of molecules of HCl = 0.726 mol * 6.022 x 10^23 molecules/mol
Number of molecules of HCl = 4.37 x 10^23 molecules
Therefore, approximately 4.37 x 10^23 molecules of HCl would be required to form 34.52 g of MgCl₂.
For more such questions on molecules
https://brainly.com/question/1351818
#SPJ8
3Ba+Al2(SO4)3 -->2Al+3BaSO4,
how many grams of aluminum will be produced if 1.0 g of Ba react with 1.80 g of Al2(SO4)3?
Using the balanced equation
3Ba+Al2(SO4)3 -->2Al+3BaSO4,
how many grams of aluminum will be produced if 1.0 g of Ba react with 1.80 g of Al2(SO4)3?
Answers
13.5 x \(10^-2\) g of aluminium will be produced if 1.0 g of Ba reacts with 1.80 g of \(Al_2(SO_4)3\).
What are moles?The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilograms of carbon 12; its symbol is “mol”.
Balanced Equation:
\(3Ba + Al_2(SO_4)_3\) → \(2Al+3BaSO_4\)
Grams of Ba: 1.0 g
Grams of \(Al_2(SO_4)_3\): 1.8g
Calculate the moles of Ba and \(Al_2(SO_4)_3\):
\(\frac{1g Ba}{137.3}\) = 7.3 x\(10^{-3}\)mol
1.8g \(Al_2(SO_4)_3\)/ 342 = 5.3 x \(10^-3\) mol \(Al_2(SO_4)_3\)
Find the limiting reactant:
Ba has a coefficient of 3 in the balanced equation, so we divide the moles of Ba by 3 to get 7.3 x \(10^-3\) mol Ba ÷3 = 2.43 x \(10^-3\)
\(Al_2(SO_4)_3\) has a coefficient of 1, so if we divide by 1, we get the same number of 5.3 x\(10^-3\)
2.43 x \(10^-3\) is smaller than 5.3 x \(10^-3\), therefore Ba is the limiting reactant.
finally, we just find the number of moles of Al
The ratio of Al to Ba is 2:3
7.3 x \(10^-3\) x (2÷3) = 5 x \(10^-3\) mol Al
Convert into mass.
5 x \(10^-3\) mol Al x 27 = 13.5 x \(10^-2\) g
Hence, 13.5 x \(10^-2\) g of aluminium will be produced if 1.0 g of Ba reacts with 1.80 g of \(Al_2(SO_4)3\).
Learn more about moles here:
https://brainly.com/question/15209553
#SPJ1
Compare and contrast the mass of the object to the size of the object.
Answers
An image of Earth's layer is above.
Which layer is the most dense?
layer A
layer B
layer C
layer D
Answers
Answer:
d
Explanation:
il answer in comments if you brainly me
NEED ANSWER NOW! 40 POINTS
Read the chemical equation.
Fe2O3 + CO → Fe + CO2
if 1.8 moles of Fe2O3 react with 2.7 moles of CO, how many moles of each product are formed?
5.4 moles Fe and 1.8 moles CO2
2.7 moles Fe and 0.9 moles CO2
3.6 moles Fe and 5.4 moles CO2
1.8 moles Fe and 2.7 moles CO2
Answers
Answer:1.8 moles Fe and 2.7 moles CO2
Explanation:
Answer:
1.8 moles Fe and 2.7 moles CO2
Starting with 0.3500 mol CO(g) and 0.05500 mol COCl2(g) in a 3.050 L flask at 668 K, how many moles of CI2(g) will be present at equilibrium?
CO(g) + Cl2(g)》COCl2(g)
Kc= 1.2 x 10^3 at 668 K
Answers
At equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
1: Write the balanced chemical equation:
\(C_O\)(g) + \(Cl_2\)(g) ⟶ \(C_OCl_2\)(g)
2: Set up an ICE table to track the changes in moles of the substances involved in the reaction.
Initial:
\(C_O\)(g) = 0.3500 mol
\(Cl_2\)(g) = 0.05500 mol
\(C_OCl_2\)(g) = 0 mol
Change:
\(C_O\)(g) = -x
\(Cl_2\)(g) = -x
\(C_OCl_2\)(g) = +x
Equilibrium:
\(C_O\)(g) = 0.3500 - x mol
\(Cl_2\)(g) = 0.05500 - x mol
\(C_OCl_2\)(g) = x mol
3: Write the expression for the equilibrium constant (Kc) using the concentrations of the species involved:
Kc = [\(C_OCl_2\)(g)] / [\(C_O\)(g)] * [\(Cl_2\)(g)]
4: Substitute the given equilibrium constant (Kc) value into the expression:
1.2 x \(10^3\) = x / (0.3500 - x) * (0.05500 - x)
5: Solve the equation for x. Rearrange the equation to obtain a quadratic equation:
1.2 x \(10^3\) * (0.3500 - x) * (0.05500 - x) = x
6: Simplify and solve the quadratic equation. This can be done by multiplying out the terms, rearranging the equation to standard quadratic form, and then using the quadratic formula.
7: After solving the quadratic equation, you will find two possible values for x. However, since the number of moles cannot be negative, we discard the negative solution.
8: The positive value of x represents the number of moles of \(Cl_2\)(g) at equilibrium. Substitute the value of x into the expression for \(Cl_2\)(g):
\(Cl_2\)(g) = 0.05500 - x
9: Calculate the value of \(Cl_2\)(g) at equilibrium:
\(Cl_2\)(g) = 0.05500 - x
\(Cl_2\)(g) = 0.05500 - (positive value of x)
10: Calculate the final value of \(Cl_2\) (g) at equilibrium to get the answer.
Therefore, at equilibrium, the number of moles of \(Cl_2\) (g) will be 0.2025 mol.
For more such questions on equilibrium, click on:
https://brainly.com/question/517289
#SPJ8
Which of the following is a true statement?
A)Temperature is a constant condition with respect to Charles's Law
B)Charles's Law involves the units of volume and pressure
The relationship between the units involved in Boyle's Law is one of exponential decay
C)The relationship between the units involved in Charles Law is exponential growth
D)None of these statements are true
Answers
Answer:
B) Charles's law involves the units of volume and pressure
The relationship between the units involved in Boyle's law is one of the exponential Decay
Explanation:
follow me for more of my answers
871g of sodium chloride is how many moles
Answers
Answer:
14.9 mol
Explanation:
To find the number of moles in a given mass of a sample of sodium chloride (NaCl), we can multiply the number of grams in the sample by the molar mass of sodium chloride, which is 58.44 g/mol.
871 g × (1 mol / 58.44 g)
= 871/58.44 mol
≈ 14.9 mol
Note that we rounded to 3 significant figures in the final answer because that is how many significant figures were given in the mass measurement of the sodium chloride sample.
Describe what type of electron transfer happens between these two atoms.
Answers
Answer:
Magnesium loses it's two electrons and Oxygen gains two electrons. Magnesium is now a cation and Oxygen is now an anion. Both become stable.
Explanation:
The type of electron transfer which happens between the Mg and O atom is a complete transfer of electrons from the Mg atom to the O atom in an ionic bond.
As we know, Ionic bonding is a type of chemical bonding characterized by the complete transfer of electrons from one atom to the other.The most electropositive electron usually is usually the donor while the most electronegative elements is the acceptor.
As evident in the case above;
Mg, which is the electropositive element with 2 Valence electrons loses its Valence electrons to become Mg²+.O, which is the electronegative element with 6 Valence electrons, and consequently, only needs 2 electrons to complete it's octet.Ultimately, an ionic bond is formed between the Mg and O atoms.
Read more:
https://brainly.com/question/21596753
When you need to produce a variety of diluted solutions of a solute, you can dilute a series of stock solutions. A stock solution has a significantly higher concentration of the given solute (typically 101 to 104 times higher than those of the diluted solutions). The high concentration allows many diluted solutions to be prepared using minimal amounts of the stock solution. What volume of a 6.01 M stock solution do you need to prepare 100. mL of a 0.3624 M solution of HCl?
Answers
Answer:
Volume of stock solution needed = 6.0299 mL
Explanation:
Dilution consists of lowering the amount of solute per unit volume of solution. It is achieved by adding more diluent to the same amount of solute.
This is deduced when thinking that both the dissolution at the beginning and at the end will have the same amount of moles.
Data:
M1 = 6.01 M stock solution concentration
M2 = 0.3624 M diluted solution concentration
V2 =100 mL diluted solution volume
V1 = ? stock solution volume
M1 * V1 = M2 * V2
\(V1=\frac{M2*V2}{M1} =\frac{0.3624M*100mL}{6.01M} =6.0299 mL\)
Which of the following describes a primary difference between distributive bargaining and interest-based bargaining?(1 point)
1. Interest-based bargaining is a type of negotiation.
2. Distributive bargaining seeks a solution that is beneficial to all parties.
3. Distributive bargaining is a type of negotiation.
4. Interest-based bargaining seeks a solution that is beneficial to all parties.
ECONOMICS! PLEASE HELP!
Answers
The primary distinction between these two negotiation strategies is that distributive negotiation does not take into consideration the demands of the other party when negotiating a settlement.
Which of the following statements most accurately describes an instance of distributive bargaining?In a competitive negotiation style known as distributive bargaining, one party only gains when the other party loses.
What sets position-based bargaining apart from interest-based negotiation?Positional negotiating involves both sides criticising one other's proposals in an effort to convince the other that theirs is the best. By engaging in interest-based negotiation, both (or all) sides approach the problem and search for a solution that best advances their individual interests.
To know more about solution visit:-
https://brainly.com/question/29015830
#SPJ1
I am so confused that i don't even understand how to answer it
Answers
Answer:
What's the question so I can help?
I will just edit my answer when you have asked your question and post it here.
Explanation:
How many moles of magnesium are in 1.00 g?
Answers
Answer:
atomic mass * 1.00/2
Explanation:
hopefully dat helps
The moles of magnesium present in 1.00 g is 12.15 moles. Thus magnesium will contains 12.15 moles in one grams.
What are moles?Moles are defined as a common unit used in science to measure vast numbers of extremely small things, such atoms, molecules, or other specific particles.
It can also be defined as the quantity of a material that contains exactly 6.022 x 10²³ of the substance's "elementary entities."
It can be defined as the volume of matter that has exactly the same number of elementary particles as there are atoms in 12 grams of carbon-12.
Moles of magnesium can be calculated as
= atomic mass x 1.00 g / 2
= 24.305 x 1.00 / 2
= 12.15 moles
Thus, the moles of magnesium present in 1.00 g is 12.15 moles. Thus magnesium will contains 12.15 moles in one grams.
To learn more about moles, refer to the link below:
https://brainly.com/question/26416088
#SPJ2
If you know the answer please tell me thank you.
Answers
(a) The balanced chemical equation of magnesium and dilute sulfuric acid is Mg + H₂SO₄ → MgSO₄ + H₂.
(b) The solution was filtered to remove the solid magnesium sulphate (MgSO₄) produced.
What is the balanced chemical reaction of magnesium and dilute sulfuric acid?The balanced chemical equation of magnesium and dilute sulfuric acid is given as;
Mg + H₂SO₄ → MgSO₄ + H₂.
During the reaction the fizzing that was observed was due to the production of hydrogen gas.
At the end of the reaction, magnesium sulphate (MgSO₄) will be formed, as well as hydrogen gas.
The magnesium sulphate (MgSO₄) formed is a solid, and filtration can be used to remove the solid magnesium sulphate (MgSO₄) formed.
Filtration is a separation technique used to separate a mixture of liquid and solid, so it will be the best separation technique to recover the produced magnesium sulphate (MgSO₄).
Learn more about filtrations here: https://brainly.com/question/29756050
#SPJ1
Which of the following is a limited quality item? Nail polish
Answers
Answer: Nail polish and Lithium batteries are Limited quantity item.
Explanation:
2HCI + Na₂CO3 → H₂O + CO₂ + 2NaCl
He mixes exactly 235.0 mL of 0.600 M HCI
with 7.472 g Na2CO3.
8.24 g NaCl form. What is the molar
concentration of the salt in the solution?
A. 4.29 x 10-4 M
B. 0.600 M
C. 0.429 M
D. 3.00 x 10 4M
Answers
The molar concentration of the salt is 0.600 M. Option B
What is the molar concentration of the salt?We know that the term molar concentration has to do with the number of moles of the salt that is present in one liter of the solution. We have been given the mass of the salt that is formed, we need to obtain the number of moles of the salt that has been formed and use the volume of the solution that have been given in the question to find the molar concentration of the salt.
Mass of the salt = 8.24 g
Molar mass of the salt = 58.5 g/mol
Number of moles of the salt = mass/molar mass
= 8.24 g/ 58.5 g/mol
= 0.14 moles
Volume of the solution = 235.0 mL or 0.235 L
Molar concentration = 0.14 moles/ 0.235 L
= 0.595 M or 0.600 M
Learn more about concentration:https://brainly.com/question/10725862
#SPJ1
A 100.0 mL sample of 0.10 M Sr(OH)2 is titrated with 0.10 M HCl. Determine the pH of the solution after the addition of 200.0 mL HCl.
Answers
Answer:
23.A 100.0 mL sample of 0.10 M Ca(OH)2 is titrated with 0.10 M HBr. Determine the pH of the solution before the addition of any HBr. 24. Determine the pH of the solution after the addition of 100.0 mL HBr. 25. Determine the pH of the solution after the addition of 200.0 mL HBr. 26. Determine the pH of the solution after the addition of 300.0 mL HBr. 27. Determine the pH of the solution after the addition of 400.0 mL HBr.
Explanation:
Hydrogen peroxide for teeth whitening, does it work??
fast asappp pls
Answers
Answer: This suggests that low hydrogen peroxide treatments used for shorter periods of time have the least potential to damage teeth. According to another study, scientists found that a 5% hydrogen peroxide solution was just as effective at whitening teeth as a 25% solution.
Explanation:
This means if you’re using short, low-concentration treatments, you’ll have to perform more treatments to achieve your desired whiteness.
By what means (or force) can the atoms in compounds be separated?
Answers
Answer:
chemical means
Explanation:
Compounds can be separated by chemical means physical means boiling pressure
The tin has a mass of 31.4 g and a volume of 4.3 cm3. What is the density of the tin piece? [?] g/cm³ Round your answer the the tenths place.
Answers
Mass of the tin = 31.4g
The volume of tin = 4.3 \(cm^{3}\)
The density of tin = D
We know that
\(Density = \frac{Mass}{Volume} \\D = \frac{31.4}{4.3} \frac{g}{cm^{3} }\)
\(D = 7.302 g/cm^{3}\) ≈ \(10 g/cm^{3}\)
Measurement of density contrasts the mass of an object with its volume. High density refers to the amount of matter in a given volume of an object. We shall discover what density is in this post, along with its definition and measurement systems.
The density of a substance indicates how dense it is in a particular area. Mass per unit volume is the definition of a material's density.
In essence, density is a measurement of how closely stuff is packed.
It is a special physical characteristic of a certain thing. The Greek scientist Archimedes made the discovery of the density principle.
If you are familiar with the formula and the relevant units, calculating density is simple. The letter D can also be used to signify density instead of the symbol.
To know more about density visit: https://brainly.com/question/10821730
#SPJ9
Using the guideline for oxidation numbers, write the reduction half-reactions for the following:
• O
• P
• Cu
Answers
The reduction half-reactions for O, P, and Cu:
• O: O2 + 4 e- → 2 O2-
• P: HPO42- + 2 H+ + 2 e- → H3PO4
• Cu: Cu2+ + 2 e- → Cu+
To write the reduction half-reactions for O, P, and Cu, we need to determine the oxidation numbers for each element. The guidelines for assigning oxidation numbers are:
The oxidation number of an atom in its elemental form is 0.The oxidation number of a monatomic ion is equal to its charge.The sum of the oxidation numbers of all atoms in a neutral molecule must be 0.The sum of the oxidation numbers of all atoms in a polyatomic ion must be equal to the charge of the ion.Using these guidelines, we can determine the oxidation numbers for O, P, and Cu:
O: Oxygen is a diatomic molecule, so its oxidation number is 0 in O2.P: The most common oxidation state for phosphorus is +5 in its compounds, but it can also have oxidation states ranging from -3 to +5.Cu: The most common oxidation state for copper is +2, but it can also have oxidation states ranging from +1 to +4.To know more about the Reduction half-reaction, here
https://brainly.com/question/18403544
#SPJ4