Help please and thank you

Help Please And Thank You

Answers

Answer 1
lioh(aq) + hbr(aq) ----> h2o(l) + libr(aq)
Hope it helps

Related Questions

What is pH?
O A. A measurement indicating how acidic a solution is
B. A concentration of total ions dissolved in solution
C. A level of dissolved gases that are in solution
O D. A component of solutions that makes them acidic

Answers

Answer:

Awnser is A

Explanation:

Answer:

Hello There!!

Explanation:

The answer is↬O A. A measurement indicating how acidic a solution is.

hope this helps,have a great day!!

~Pinky~

Which reaction occurs at the cathode of a galvanic cell that has an aluminum electrode in an electrolyte with aluminum ions and copper electrode in an electrolyte with copper ions ? The reduction potential for the reduction of Cu^ 2+ = 0.34 The reduction potential for the reduction of AP^ 3+ =-1.68V.

Answers

Answer:

[tex]{ \bf{Cu {}^{2 + } + 2e \: → \: Cu }}[/tex]

The reaction that occurs at the cathode of a given galvanic cell is:

Cu²⁺  + 2e⁻  → Cu

What is Galvanic Cell?

A galvanic cell can be defined as an electrochemical cell that converts the chemical energy of spontaneous redox reactions into electrical energy. The galvanic cell makes use of chemical reactions to generate electrical energy.

A galvanic cell consists of two half-cells and a salt bridge. Each half-cell further contains an electrode dipped into an electrolyte. When both electrodes are dipped in the same electrolyte, then there is no need for a salt bridge.

At the anode, an oxidation reaction occurs at this electrode. At the cathode, reduction occurs at this electrode. The anode has a negative potential with respect to the solution while the cathode has a positive potential with respect to the solution.

As in the question, the reduction of Cu²⁺ has a positive reduction potential. Therefore, the reduction of the copper will occur at the cathode.

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Question 7 of 10
How much energy is required to melt 2 kg of aluminum? Use the table below
and this equation: Q- mLfusion
Substance
Latent Heat
Fusion
(melting)
(kJ/kg)
Melting
Point
(°C)
Latent Heat
Vaporization
(boiling) (kJ/kg)
Boiling
Point
("C)
Aluminum
400
660
1100
2450
Copper
207
1083
4730
2566
Gold
628
1063
1720
2808
Helium
5.2
-270
21
-269
Lead
245
327
871
1751
Mercury
11.4
-39
295
357
Water
335
0
2258
100
A. 2200 kJ
B. 800 kJ
C. 1600 kJ
D. 1100 kJ

Answers

Answer:

NO 2200! 800 proprobably

Explanation:

just did wrong

Answer:

800 kJ

Explanation:

What are most likely the values of the quantum numbers I and mI for an
electron in a 3p orbital?

A. I = 1, 2, 3; mI = -1/2, + 1/2
B. I = 3; mI = -1/2, + 1/2
C. I = 0, 1, 2, 3; mI = -1, 0, 1
D. I = 1; mI = -1, 0, 1

Answers

Answer:

I think its D

Not too sure

The quantum numbers denote the position of an electron in the orbital. The angular momentum quantum number (l) and magnetic quantum number (ml) of the 3p orbital is I = 1; mI = -1, 0, 1. Thus, option D is correct.

What are quantum numbers?

The quantum numbers are conserved quantities used to describe the energy and the position of the electron in the atomic orbital. The azimuthal, principal, magnetic, and spin are the four quantum numbers.

The angular momentum quantum number (l) represents the orbital shape and depends on the principal quantum number, n. The magnetic quantum number (ml) represents the orientation.

If an electron is in a 3p orbital then,

n = 3

l = 1

ml = -1, 0, 1

Therefore, option D. 3p orbital contains I = 1; mI = -1, 0, 1.

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A cart accelerating slower when mass was increased.
1st Law - 3rd Law

Answers

Answer:

Newton's second law

Explanation:

It is mentioning acceleration and mass

Newton's second law's equation = F = m*a

Hope u understood

Please mark brainliest

Thank You

What is the pOH of a 1 x 10^-8 M solution of HNO3?

Answers

Explanation:

to find POH u need PH first

so ph=-log(h3o)

so

[tex]ph = - log(1 \times {10}^{ - 8} ) \\ \\ ph = 8 \\ ph + poh =14 \\ poh = 14 - 8 \\ poh = 6[/tex]

HCl + Fe?ra gì hihihihi

Answers

Answer:

fecl2+ h2

Explanation:

How would the equilibrium of the reaction below be affected if the temperature decreased?​

Answers

Answer:

A. More O2, SO2, and SO3 would be produced.

Explanation:

rank the intermolecular forces from weakest to strongest. Dipole-induced dipole, London dispersion, hydrogen bond, dipole-dipole

Answers

Answer:

London dispersion,hydrogen bond, dipole-dipole,dipole-induced dipole.

Explanation:

London dispersion < hydrogen bond < dipole-dipole < dipole-induced dipole.

What are intermolecular forces?

Intermolecular forces are the forces which mediate an interaction between molecules, including forces of attraction or repulsion which act between molecules and other types of neighbouring particles.

The London dispersion force is a temporary attractive force that occurs when the electrons in two adjacent atoms make atoms form temporary dipoles.

A hydrogen bond is an intermolecular force that occurs with a special type of dipole-dipole attraction.

Dipole-dipole forces are the forces between the positive side of one polar molecule and the negative side of another polar molecule.

A dipole-induced dipole attraction is a weak attraction that occurs when a polar molecule produces a dipole in an atom or in a nonpolar molecule by arranging of electrons in the nonpolar species.

Hence intermolecular forces from weakest to strongest are:

London dispersion < hydrogen bond < dipole-dipole < dipole-induced dipole.

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Which of the following would DECREASE the rate of a reaction?

1. add a catalyst
2. increase the concentration
3. increase the volume
4. increase the pressure

Answers

Answer: increasing volume

Explanation: adding a catalyst would increase reaction time and increasing  INCREASING concentration definently makes reaction time alot faster increasing pressure actually makes it more concentrated, so no it is not

Physical properties can be divided into two categories. _______ depend on the amount of matter present, while _______ don't.

Answers

Extensive properties, such as mass and volume, depend on the amount of matter being measured. Intensive properties, such as density and color, do not depend on the amount of the substance present. Physical properties can be measured without changing a substance's chemical identity.

Which compound is a hydrocarbon?


C 2 H 6


H 2 O


CO 2


C 6 H 12 O 6

Answers

Answer:

C2H6 OR C6H12O6 THE ANSWER

Explanation:

C2H6

!!!!!!!!!!

because it has both hydrogen and carbon as given in the word "Hydro-carbon"

this is already solved but i would appreciate if someone check for me. thank you ! ​

Answers

volume is the amount of space something occupies, so 52mL+ 26mL is 78mL. it’s correct

Gatorade has the conductivity of 3296 µS, Powerade has 4502 µS, and Vitamin Water is 657 µS. What does this data tell you about the dissolved ions in these solutions?

Answers

Answer:

Powerade has the most dissolved ions, followed by Gatorade and lastly vitamin water

Explanation:

How conductive a certain solution is, is based on the kind of ions that are present or dissolved in the solution. Hence, we have it that, the higher the concentration of the ions that are present in a solution, the better it will conduct.

There is thus, a direct relationship between what is dissolved or the kind of present ions and how conductive the solution is.

A solution with more dissolved ions is a better conductor of electricity and thus has a conductivity value that is higher

Thus, we can conclude that Powerade has more dissolved ions, Gatorade has less and Vitamin water has the least

What is the perimeter of a polygon 8cm 6cm, 4cm, 6cm

Answers

Answer:

24cm

Explanation:

The perimeter of a polygon is obtained by the sum of the length of each side of the figure.

The polygon of the problem has four sides with the following measurements:

8cm, 6cm, 4cm and 6cm.

That means the perimeter of this shape is:

8cm + 6cm + 4cm + 6cm =

24cm

what mass of water will be formed when 3g of hydrogen react with 30g of oxygen?​

Answers

Answer:  Write down the chemical equation first;

2H2 + O2 —-> 2H2O

2. Since the mass is given, use it to calculate the mole for each reactant;

mole = mass / molar mass

mole of H2 : 8/2 = 4 mole

mole of O2 : 30/16(2) = 0.9375 mole

Now, if you're not sure which reactant to use to calculate the mass of H2O using ratio since both answer are different, find the limiting reactant.

From the equation;

2 mol of H2 -> 2 mol of H2O

4 mol of H2 -> (4*2)/2 = 4 mol of H20

______________________________________

1 mol of O2 -> 2 mol of H2O

0.9375 mol of O2 -> (0.9375*2)/1 = 1.875 mol of H2O

Let's take a look at both numbers. Since H2 produces more water than O2, O2 will be the limiting reactant as it has the least mole of H2O. So now we are going to use O2 as our limiting reactant. Use the formula to calculate mass of water using mole.

mass of H2O : 1.875*(16+2) = 33.75 g

Thats it. Correct me if im wrong

Explanation:

List the two pairs of atoms referred to in the
previous question in order of increasing ionic
character of the bonding between them.

Answers

Chemical bonding and Covalent bong

Which coefficients correctly balance the formula equation below?

AgNO3 + CuCl2 → AgCl + Cu(NO3)2



2, 1, 2,1



1, 1, 3,1



2, 2, 3,1



2, 1, 1,2

Answers

Answer:

2, 1, 2,1

Explanation:

The chemical equation of the reaction given in this question is as follows:

AgNO3 + CuCl2 → AgCl + Cu(NO3)2

The reaction is between silver nitrate (AgNO3) and copper (I) chloride (CuCl2) to form silver chloride (AgCl) and copper nitrate (Cu(NO3)2.

However, this above equation is not BALANCED because the number of atoms of each element on both sides of the equation does not equate i.e. are not the same. To balance the equation, we have to make use of COEFFICIENTS, which are numbers used in front of each element in order to balance the equation.

The balanced equation is as follows:

2AgNO3 + CuCl2 → 2AgCl + Cu(NO3)2

From the above balanced equation, we can observe that coefficients used to balance the equation is in the order: 2, 1, 2,1

What is the biggest earthquake danger to the people inside a building ?

Answers

Answer:

Most of the hazards to people come from man-made structures themselves and the shaking they receive from the earthquake. The real dangers to people are being crushed in a collapsing building, drowning in a flood caused by a broken dam or levee, getting buried under a landslide, or being burned in a fire.

Hope this helps :> <3

CH3COOH
a. What is hydrated water?
1
b. How sodium hydrogen carbonate blow up
cake?
2
c. Explain the cause of saying that the reaction no. (ii) is a
hydrolysis reaction.
3
d.) Is the reaction no. (i) said a redox reaction and a
substitution reaction simultaneously? Analyze with
equations.
4​

Answers

Answer:

the water which are very healthy is known as hydrated water

(7) need help asappp plss

Answers

Answer:

See explanation

Explanation:

The cold drink chiller is a cold substance which is inserted into a bottle of drink which contains warm liquid particles at a particular temperature.

Once the drink chiller is inserted, the liquid molecules around the drink chiller become cooler, denser and sink away from the drink chiller. Other warmer, less dense molecules of the liquid drink now replaces them around the drink chiller.

A convection current is thus set up for as long as the drink chiller is working.

what type of chemical is manganese(IV) oxide​

Answers

Answer:

catalyst

Explanation:

it alters the speed of reaction

3 Cu + 8HNO3 → 3 Cu(NO3)2 + 2 NO + 4 H2O
In the above equation, how many grams of water can be made when 15.9 moles of HNO3 are consumed?

Answers

Answer:

45673

Explanation:

The osmotic pressure of a solution formed by dissolving 0.231 g of the protein in 150 mL of water at 298 K is found to be 2.054 torr.

Answers

Answer:

13924g/mol is the molar mass of the protein

Explanation:

What is the molar mass of the protein.

The osmotic pressure of a solution, π, is defined as:

π = c*R*T

Where π is osmotic pressure = 2.054torr* (1atm/760torr) = 2.70x10⁻³atm

c is molar concentration of the protein,

R is gas constant = 0.082atmL/molK

And T is absolute temperature = 298K

Solving the molar concentration:

c = π / RT

c = 2.70x10⁻³atm / 0.082atmL/molK*298K

c = 1.106x10⁻⁴ moles protein / L

The moles of protein in 150mL = 0.150L:

0150L * (1.106x10⁻⁴ moles protein / L) = 1.659x10⁻⁵ moles protein

The molar mass is the ratio of mass and moles:

0.231g / 1.659x10⁻⁵ moles protein =

13924g/mol is the molar mass of the protein

Help me with this question
Define a unit? write it's type​

Answers

Answer:

Unit is the standard assigned to measure physical quantity. ... Length, mass, time, temperature, luminous intensity, and the electric current are known as the fundamental quantities. These are represented by L, M, T, 0, Cd, and A respectively

OAmalOHopeO

7. You have 1.5x1024 atoms of iron. How many moles do you have?

Answers

Answer:

2.49moles

Explanation:

To calculate the number of moles (n), of iron (Fe) in 1.5 × 10²⁴ atoms, we divide the number of atoms by Avogadro's number (6.02 × 10²³).

That is, n = N ÷ nA

Where;

n = number of moles (mol)

N = number of atoms

nA = Avogadro's constant

n = 1.5 × 10²⁴ ÷ 6.02 × 10²³

n = 1.5/6.02 × 10(²⁴ - ²³)

n = 0.249 × 10¹

n = 2.49moles

Es para hoy, ayuda por favor

Answers

En que necesitas ayuda para hoy ?

Answer: it)s not letting me download it edit it a d re send it

Explanation:

The half-reaction at the cathode in an electrochemical cell is given below. What other half-reaction would most likely occur at the anode to produce a spontaneous reaction?

Ni^2(aq)+2e-=Ni(s)

A. Cu(s)=Cu^2+(aq)+2e-
B. Zn(s)=Zn^2+(aq)+2e-
C. Mg^2+(aq)+2e-=Mg(s)
D. Ni(s)=Ni^2+(aq)+2e-

Answers

The half-reaction is Zn → Zn⁺² + 2e⁻ which is most likely occur at the anode to produce a spontaneous reaction.

Hence, option (B) is correct answer.

What is Spontaneous Reaction ?

A reaction which occurs without the intervention of outside is called Spontaneous reaction.  The reaction is Spontaneous when the Δ G < 0 and [tex]E^{\circ}_{\text{cell}}[/tex] > 0.

What is Cathode and Anode ?

Cathode where the reduction occurs. Anode where the oxidation take place.

Cathode: Ni⁺² + 2e⁻ → Ni

Anode: Zn → Zn⁺² + 2e⁻

______________________

Zn + Ni⁺² → Zn⁺²  + Ni

The above reaction is spontaneous reaction.

Thus, from the above conclusion we can say that half-reaction is Zn → Zn⁺² + 2e⁻ which is most likely occur at the anode to produce a spontaneous reaction.

Hence, option (B) is correct answer.

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Use the periodic table to determine the electron configuration for aluminum (AI) and arsenic (As) in
noble-gas notation
AL
o [Ar]3s23p!
lo (He]2s22p63s23p!
0 [Ne]3s23p!
0 [Ne]3s23p2
DONE

Answers

Answer:

Aluminum; [Ne]3s²3p¹

Arsenic; [Ar]3d¹⁰4s²4p³

Explanation:

Aluminum

From the periodic table, we have that aluminum, Al, is located in period 3, and group 3A of the periodic table

Therefore, the noble gas that comes before aluminum in the periodic table is neon Ne

The electronic configuration of aluminum is 1s²2s²2p⁶3s²3p¹

The electronic configuration of neon is 1s²2s²2p⁶

Therefore, the electronic configuration of aluminum in noble gas notation (Ne) is therefore;

[Ne]3s²3p¹

Arsenic

Arsenic is located after argon, Ar on the periodic table

The electronic configuration of arsenic is 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

The electronic configuration of argon is 1s²2s²2p⁶3s²3p⁶

The electronic configuration of arsenic in noble gas notation (Ar) is given as follows;

[Ar]3d¹⁰4s²4p³

State with reasons, whether sulphur dioxide is acting as an oxidizing agent or a reducing agent in each of the following reactions:

•2H2S(g) + SO2(g) -> 2H2O(l) + 3S(s)

•SO2(g) +H2O(l) +NaClO(aq) -> NaCl(aq) + H2SO4(aq)

Answers

Answer:

A) oxidizing agent is SO2

B) NaClO is the oxidizing agent

Explanation:

A) This is a redox reaction in which oxidation and reduction occur simultaneously.

Thus, in 2H2S(g) + SO2(g) -> 2H2O(l) + 3S(s);

H2S is reduced as follows;

H2S → S + 2H+ + 2e−

We can see that SO2 has been reduced while H2S gets oxidized since it has changed state from - 2 to 0 . Thus sulphur dioxide is the oxidizing agent.

B) SO2(g) + H2O(l) + NaClO(aq) -> NaCl(aq) + H2SO4(aq)

In this, SO2 undergoes oxidation and NaClO is the oxidizing agent

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PLZ HELP MEEEE NEED ANSWERS ASAP Find the sum of the first terms of the sequence In your English class you are given a list of 12 books you want to choose three books to read over the summer how many groups of three books are available from the list of 12 Which cultures defined European civilization of the Middle Ages? What figure exemplified this blend of cultures?You should find the answer in Chapter 1, Lesson 4 called New Pattern of Civilization in a High School US history book who is regarded as one of the greatest inventors in history? Order the list of numbers from least to greatest. help please asap!!! working too please not just the answers!! A farmer uses triazine herbicide to control pigweed in his field. For the first few years, the triazine works well and almost all the pigweed dies; but after several years, the farmer sees more and more pigweed. Which of these explanations BEST describes this observation? a. The herbicide company lost its formula and started selling poor-quality herbicide. b. Natural selection caused pigweed to mutate, creating a new triazine-resistant species c. Triazine-resistant pigweed is more efficient at photosynthesis. d. More triazine-resistant individuals survived each year, soi more individuals were triazine-resistant. e. Some individuals acquired triazine resistance during their lifetimes, and were able to pass it on to offspring The process that results from people building groins that protrude into the sea is:________a. Sediment becomes spread out fairly evenlyb. More sediment becomes available downshorec. More sediment is deposited on the side of the longshore currentd. Less sediment is deposited on the side of the longshore current A ball of mass 100g thrown by a man moves at a velocity of 100m/s. what is the momentum? need the answer step by step plssss!! i need it fast!!!!!!! Wolves are predators of deer. What is most likely to happen to the deer population if the wolf population increased? 0 stay the same increase decrease Obecome extinct Given the general form of the sinusoidal function, y = AsinB(x - C) + D, match the following items. When an electron is removed the atom gets a ( ) Charge . Literary works like Equianos autobiography were helpful in promoting _____.the settling of the American frontierthe Abolitionist movementthe fight for Independencethe Suffragist movement Find the domain of f/g f(x)= sqrt 4-x^2 g(x)= sqrt 3x+4 Fill in with the correct future form. (8pts) 1. I expect we ... (be) there in half an hour. 2. I... (go) to see the Picasso exhibition at the National Gallery tomorrow. 3. Andrew ... (be) thirteen years old on September 3rd. 4. He (fly) to Frankfurt by the time I arrive in London. 5. This time next week, I ... (fly) to Jamaica. 6. It's really cold today. I think it ... (snow). 7. John ... (work) in London for three years by the end of the month. 8. I'm sure we ... (win) the match now. Six numbers have a mean of 4.5 and five of the numbers are 4,3,4,6,1.The other number is x.Work out the value ofx. The rate of the reaction is 1.6*10-2 M/s when the concentration of A is 0.15 M. Calculate the rate constant if the reaction is (a) first order in A and (b) second order in A. the whole class (meet or meets) at 3pm tomorrow? The first sequence rule is add 9 starting from 13. The second sequence rule is subtract 12 starting from 58. What is the first number that appears in both sequences? 22 31 34 46