Answer: [tex]Cu+NO_3^-+2H^+\rightarrow Cu^{2+}+NO_2^-+H_2O[/tex]
Explanation:
Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.
Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.
[tex]Cu\rightarrow Cu^{2+}+2e^-[/tex] (1)
Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.
[tex]NO_3^-+2e^-+2H^+\rightarrow NO_2^-+H_2O[/tex] (2)
Combining (1) and (2) we get:
[tex]Cu+NO_3^-+2H^+\rightarrow Cu^{2+}+NO_2^-+H_2O[/tex]
The balanced reaction equation for the reaction described in the question is; Cu + NO3^- + 2H^+ ------> Cu^2+ + NO2^- + H2O
What is a balanced reaction equation?
An equation is said to be balanced when the total number of atoms of each element on the right hand side of the reaction equation is equal to the total number of atoms of the same element on the left hand side of the reaction equation.
The balanced reaction equation for the reaction described in the question is; Cu + NO3^- + 2H^+ ------> Cu^2+ + NO2^- + H2O
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PLEASE HELPPPP!!! IM BEING TIMED
Based on Map 1, which statement describes the main cause of the
weather pattern known as the Arizona monsoon?
A)Much of the southwestern United States is desert.
B)Ocean water to the south of Arizona is warm.
C)Winds at this latitude tend to blow from west to east.
D)Land masses heat up more quickly than oceans.
Answer:
B)
Explanation:
This should be the correct answer, lmk if it's not
As in the given image, the weather pattern known as Arizona monsoon is caused by the winds at this latitude tend to blow from west to east. Thus, option C is correct.
What is Arizona monsoon?The Arizona Monsoon is a well-defined meteorological phenomenon that affects the southwest region of North America during the summer. It is scientifically referred to as a meteorological "singularity."
Arizona experiences its strongest wind flow during the winter months from the west or northwest, coming from California and Nevada. The winds change to a southerly or southeasterly direction as the summer months approach.
From the Pacific Ocean and the Gulf of Mexico, moisture moves northward. Statewide moisture conditions are drastically altered as a result of this alteration.
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9.
Which element is most likely to conduct heat and electricity?
A. Na B. Ca C.P D. Ne
Answer:
A. Na
Explanation:
Sodium is a good conductor of electricity and heat because it has only one electron in its valence shell.
i hope this helps :)
Answer:
C.) P
Explanation:
I believe this is correct, lmk if it's not.
List the producers in this food web
Answer:
Tree and Grass?
Explanation:
hope it helps pleass mark me as brainliest answer
Hello can someone pls help me with this question! (Please explain why)
QUESTION: How is an increase in surface area achieved?
A. increasing the size of the reactant particles
B. decreasing the size of the reactant particles
Answer:
letter A.
Explanation:
the rate of a chemical reaction can be raised by increasing the surface area of a solid reactant. this is done by cutting the substance into small pieces, or by grinding it into a powder.if the surface area of a reactant is inceased: more particles are exposed to the other reactant.
HOPE IT HELPS(◍•ᴗ•◍)❤
As you climb through the upper stratosphere, the temperature: increases decreases in constant
Answer:
It increases.
Explanation:
I hope this helps.
Answer:
Increases
Explanation:
Hope this helps :)
4 Fe + 6 H₂O + 3 O₂ → 4 Fe(OH)₃
Police found 10 grams of Fe(OH)₃ on the knife. Convert grams of rust (Fe(OH)₃) into grams of iron (Fe) to see if the knife contained enough to murder the butler.
345 g Fe
5.22 g Fe
7.34 g Fe
2.95 g Fe
If a 67.3G rock is dissolved in 2.00L of acid, what is the molar concentration of gold in the acid solution
Answer:
[Au] = 0.171 M
Explanation:
For this question, we assume the rock is 100 % gold.
First of all, we determine the moles of gold
67.3 g . 1mol/ 196.97g = 0.342 moles
Molar concentration is defined as the moles of solute, contained in 1L of solution.
Our solution volume is 2L.
M = 0.342 mol / 2L = 0.171
Molar concentration, also called molarity of solution is the most typical unit of concentration.
1. Name the elements with the following symbols
a. Na
b. H
c. C
d. O
2. What is the symbol for the following elements?
a. Helium
b. Sulfur
c. Copper
d. Lead
Answer:
1.
a. Sodium
b.Hydrogen
c Carbon
d Oxygen
2.
a He
b S
c Cu
d Pb
Answer:
1.
a. Sodium
b.Hydrogen
c Carbon
d Oxygen
2.
a He
b S
c Cu
d Pb
Explanation:
Hope this will help
Pls help me with this question: This diagram represents the process of?
A.selective breeding
B.natural selection
C.metamorphosis
D.germination
Answer:
A
Explanation:
Selective Breeding
Is your answer because if you look closely to the pic you see the process
Hope this helps:)
Pls mark brainlist
Answer:
A
Explanation:
Does this particle diagram represent an element, compound, or mixture?
Answer:
Yes, it's a mixture as more than 1 type of molecules are present!!
Which family group on the peirodic table has the most elements
a. metals
b. nonmetals
c. trainsiton elements
d. metalloids
Answer:
C. Transition metals
Explanation:
Out of the answers transition metals have the most elements on the periodic table.
A closed container has 5.60 x 1023 molecules of oxygen gas (O2). How many moles is that?
Identify the type of reaction that will occur with these reactants:
Fe(NO3)3(aq)+CaSO4(aq)
- synthesis
- decomposition
- single replacement
- double replacement
Answer:
double replacement (Mutual exchange of ions)
Explanation:
GOOD LUCK FOR THE FUTURE! :)
1. What is temperature?
2. How do temperatures change?
3. What affects the temperature of a system?
4. How are temperature and molecular motion related?
5. How is molecular motion related to kinetic energy?
Answer:
1. não entendi
.
3. não entendi
4. não entendi e
5. não entendi
2. não entendi
rysor
Explanation:
Answer:
here...
Explanation:
1 - Temperature is a quantitative measure of how hot or cold something is. Temperature is fundamentally linked to the kinetic energy of atom-scale particles. The Celsius scale is based on the older centigrade scale, adapted slightly to take account of the absolute temperature scale, measured in kelvins, symbol K.
2- Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.
3- When a system absorbs or loses heat, the average kinetic energy of the molecules will change. Thus, heat transfer results in a change in the system's temperature as long as the system is not undergoing a phase change.
4- As the temperature increases, the kinetic energy of the molecules of the liquid increases. The movement of the molecules gradually overcomes forces of attraction between the molecules, with the result that they have greater freedom to move, over greater volumes.
5- The kinetic molecular theory of matter states that: Matter is made up of particles that are constantly moving. Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.
Help need fast !!!!!!
Answer:
Sodium oxide NA2O
2) N8CL
3) HO2
4) LISO3
Answer:
Sodium oxide NA2O
2) N8CL
3) HO2
4) LISO3
Explanation:
If I add a proton to an atom, which of the following will change? (select all that apply) a)the type of element b)The mass of the atom c)The charge of the atom d)The number of neutrons)
2. A book sits on a table. Which of the following is true?
a. The forces acting on the book are balanced.
b. The forces acting on the book are unbalanced.
C. Gravity is the only force acting on the book.
d. The net force acting on the book is 3N.
Answer:
hi
Explanation:
Put the following elements in order of increasing first ionization energy (lowest to highest): S, Ca, Mg,
CI
Answer: Ca, Mg, S, Cl
Explanation: general trends are IE increases as the number of electrons in the outermost shell, and decreases as the number of shells (and shielding effect) increases.
S outer 6, shells 3
Ca outer 2, shells 4
Mg outer 2, shells 3
Cl outer 7, shells 3
Ca has 2 outer, 4 shells —> lowest
others have 3shells
Mg 2outer, S 6, Cl 7
___________ is the least reactive metal.
i. Silver
ii. Iron
iii. Gold
iv. Sodium
FOR 40 points!!!! I need the whole page finish !!!!!! Pleaseeeeee!!!!!!! I will five u brainlist !!!!!!
Please help!! I'll name you brainliest!!
Answer:
Chlorine
Explanation:
Potassium needs to lose one electron Chlorine needs to gain 1 electron
Answer:
S (Sulfur)
Explanation:
hope this helps!
(Please Help)
when adding a coefficient to a molecule what must you do to all atoms of that molecule?
A.Only multiple the first atom of the coefficient
B. multiply all of the atoms by the coefficient
C. Add the coefficient and the subscripts together, then divide them all by 2.
Answer:
B
Explanation:
Trust me I've had problems like these
2 X(9) + Y (9) = 2XY (9)
A reversible reaction is represented by the equation above. The amounts of reactants and products at time 1 are shown in the particle diagram on the left. The particle diagram on the right shows the
amounts of reactants and products at time 2. Based on the diagrams, what can be inferred about the relative rates of the forward and reverse reactions between time 1 and time 2?
a. nothing can be inferred because the total number of X and Y atoms is the same
each diagram
b. Nothing can be inferred because the temperature of the system may have been changed
c. The rate of the reverse reaction is greater than the rate of the forward reaction
d. The rate of the forward reaction is greater than the rate of the reverse reaction.
Answer:
The answer is D. The rate of the forward reaction is greater than the rate of the reverse reaction.
Explanation:
The forward reaction rate was greater than the reverse reaction rate because more product is present at time 2. This is the answer from ap classroom.
The given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
The chemical reaction has been given by the combination of reactants for the formation of product. The reactants combine in the fixed proportion to form the product.
The rate of reaction has been defined as the rate of formation of product or the disappearance of reactants.
Rate of reactionThe forward reaction has been given as the rate of formation of product. The reverse reaction has been given as the rate of dissociation of product.
In the given condition, the number of reactant at time 1 are more than the reactant at time 2. This states that there has been increased formation of the product at time 2.
Thus, the given reaction has been inferred the increased rate of forward reaction than reverse reaction. Thus, option D is correct.
Learn more about reverse reaction, here:
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Predict the shape of the molecule around the
indicated atom.
A. linear
B. trigonal planar
C. tetrahedral
D. bent
DUE IN 10 MINUTES PLZZZZ
Part IV: True/False
____ 38. The mass of the nucleus is small compared to the mass of the atom.
____ 39. Alpha particles would be harder to turn than Beta particles.
____ 40. Positive charge was spread all throughout the atom in the Rutherford Model.
____ 41. The Manhattan Project was located in New York for most of its duration.
____ 42. The cathode rays produced by Thomson were identical for all filaments.
____ 43. It is possible to know where an electron is and what path it is on.
____ 44. X-rays are produced when fast moving electrons strike phosphor coatings.
____45. All nuclear changes involve at least two reactants.
Answer:
true false true false true fake
Answer:
38. False
39. True
40. True
41. True
42. False
43. False
44. True
45. True
Explanation:
Note these are just my guesses they might not all be correct but I will do my best.
Hope this helps you at all! Feel free to correct me if I got any of them wrong :)
need points & are good at science?
Answer:
A
Explanation:
I believe the Correct answer would be A
I NEED HELP HERE PLEASE !!!
A gas has a volume of 4 liters at 3 atm. To expand the volume to 7000 ml, what the new pressure
(in atm) have to be?
Answer:
Gas it too expensive I need to get a job. I have no money to use at the atm
Explanation:
if your car is on 7000 ml it has issues and you need to take it to a mechanic.
when a coil of wire is connected to a batter, an electric current flows through it. True or False
Answer:
True i think.
Explanation:
1. According to the equation, what mass of hydrogen fluoride is necessary to produce 2.3 g of sodium fluoride?
HF + NaNO3 -> HNO3 + NaF
Answer:
1.09 grams
Explanation:
According to the following chemical equation:
HF + NaNO₃ -> HNO₃ + NaF
1 mol of hydrogen fluoride (HF) produces 1 mol of sodium fluoride (NaF). Thus, we first convert from mol to grams by using the molar mass (MM) of each compound:
MM(HF)= (1 g/mol x 1 H) + (19 g/mol x 1 F) = 20 g/mol HF
1 mol HF x 19.9 g/mol HF = 20 g
MM(NaF) = (23 g/mol x 1 Na) + (19 g/mol x 1 F) = 42 g/mol NaF
1 mol NaF x 42 g/mol NaF = 42 g
Thus, from 20 g of HF are produced 42 g of NaF ⇒ 20 g HF/42 g NaF. We multiply this stoichiometric ratio by the mass of NaF produced to calculate the required mass of HF:
20 g HF/42 g NaF x 2.3 g NaF = 1.09 g HF
Therefore, 1.09 grams of HF are necessary to produce 2.3 g of NaF.
as the train rushes down the hill the kinetic energy of the train _____ and the gravitational potential stored between the train and earth ________