A mixture of molten salts contains the following ions: Mg2 , Cu2 ,F-, Cl-, Br-. Which ion will be oxidized first, when the mixture undergoes electrolysis.

Answers

Answer 1

When the mixture of ions undergoes electrolysis, Br- is most easily oxidized.

Electrolysis refers to the decomposition of a solution by the passage of direct current through it. During electrolysis, a specie is oxidized and another specie is reduced since it is a redox reaction.

Among all the ions; Mg2+ , Cu2+ ,F-, Cl-, Br-, the ion that is most easily oxidized in Br- which is oxidized to Br2.

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Related Questions

What is a quick way to determine how many energy levels an element possesses?
A.
Divide the element's atomic number by eight.
B.
Find the element's group number on the periodic table.
C.
Find the element's period number on the periodic table.
D.
Divide the element's atomic mass by eight.

Answers

Answer:

c

Explanation:

just got this question

in what area of the united states do the fewest people live​

Answers

Answer:

The most populous state in the United States is California, which has 37,253,956 inhabitants. On the other hand, the least populated state is Wyoming with 493,782 inhabitants.

Answer: Alaska. Alaska is by far the least densely populated of the US states and has 1.3 persons per square mile.

Explanation:

Hope it helped .

Can anyone please answer questions 3 and 4


I’ll give the brainiest!

Answers

Answer:

1.Phenolphthalein

2.Method

a.Use the pipette and pipette filler to add 25 cm 3 of alkali to a clean conical flask.

b.Add a few drops of indicator and put the conical flask on a white tile.

c.Fill the burette with acid and note the starting volume.

d.Slowly add the acid from the burette to the alkali in the conical flask, swirling to mix.

Explanation:

the distance between two successive peaks is called

Answers

wavelength-
the distance between two successive peaks on adjacent waves is its..

QUESTION 2

What is the pressure in atm of 0.742 mole of gas at 10.91 L and 291 K?

I

Answers

The pressure of this gas in atm is equal to 1.63 atm.

Given the following data:

Number of moles = 0.742 moleVolume = 10.91 LitersTemperature = 291 KIdeal gas constant, R = 0.0821 Latm/molK

To calculate the pressure of this gas, we would use the ideal gas law equation;

[tex]P=\frac{nRT}{V}[/tex]

Where;

P is the pressure.V is the volume.n is the number of moles of a gas.R is the ideal gas constant.T is the temperature.

Substituting the given parameters into the formula, we have;

[tex]P=\frac{0.742 \times 0.0821 \times 291}{10.91} \\\\P = \frac{17.73}{10.91}[/tex]

Pressure, P = 1.63 atm.

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If 77.0 mL of nitrogen gas is collected over water at 50 °C and 763 mm Hg, what is the volume of dry nitrogen gas at STP? The vapor pressure of water at 50 °C is 92.5mm Hg.

Answers

The volume of the dry nitrogen gas at STP is 57.4 mL

From the question given above, the following data were obtained:

Initial volume (V₁) = 77 mL

Initial temperature (T₁) = 50 °C = 50 + 273 = 323 K

Initial pressure (P₁) = 763 – 92.5 = 670.5 mmHg

Final temperature (T₂) = STP = 273 K

Final pressure (P₂) = 760 mmHg

Final volume (V₂) =?

The volume of the dry nitrogen can be obtained by using the combine gas equation as follow:

[tex] \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2} \\ \\ \frac{670.5 \times 77}{323} = \frac{760 \times V_2}{273} \\ \\ cross \: multiply \\ \\ 323 \times 760 \times V_2 = 670.5 \times 77 \times 273 \\ \\ divide \: both \: side \: by \: 323 \times 760 \\ \\ V_2 = \: \frac{670.5 \times 77 \times 273 }{323 \times 760} \\ \\ V_2 = 57.4 \: ml[/tex]

Therefore, the volume of the dry nitrogen gas is 57.4 mL

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The positvie part of the atom found in the center of the atom

Answers

That would be protons ! They are positive

How much heat is absorbed when 25 g of water increases by 45 K?

Answers

4709.25 joules of heat are absorbed when 25 grams of water increases temperature by 45 K.

Let suppose that temperature change experienced by water is entirely sensible. Then, we can estimated the heat absorbed by the water sample ([tex]Q[/tex]), in joules, through this expression:

[tex]Q = m\cdot c \cdot \Delta T[/tex] (1)

Where:

[tex]m[/tex] - Mass of the water sample, in grams.[tex]c[/tex] - Specific heat of water, in joules per kilogram-Kelvin.[tex]\Delta T[/tex] - Temperature change, in Kelvin.

If we know that [tex]m = 25\,g[/tex], [tex]c = 4.186\,\frac{J}{g\cdot K}[/tex] and [tex]\Delta T = 45\,K[/tex], then the heat absorbed by the water sample is:

[tex]Q = (25\,g)\cdot \left(4.186\,\frac{J}{g\cdot K} \right)\cdot (45\,K)[/tex]

[tex]Q = 4709.25\,J[/tex]

4709.25 joules of heat are absorbed when 25 grams of water increases temperature by 45 K.

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Why is partial pressure of oxygen greater at lower levels in water.

Answers

Answer:

Therefore, the partial pressure of oxygen at high altitudes is less than at sea level.

Explanation:

The deep ocean thus has higher oxygen because rates of oxygen consumption are low compared with the supply of cold, oxygen-rich deep waters from polar regions. In the surface layers, oxygen is supplied by exchange with the atmosphere.

Que pasa si a una taza de arena le pongo espuma y lo agito por 10 minutos?

Answers

Answer:

Conversion of energy

Explanation:

Shaking the sand is a form of kinetic energy. The friction of the sand particles rubbing against each other converts the kinetic energy to heat energy. Some of the kinetic energy also converts into the energy of sound waves, which you can hear while you shake the sand.

. Nếu dẫn 0,01 mol CO2 vào 50 ml dung dịch Ba(OH)2 0,1M thì sau phản ứng thuđược

A. BaCO3

B. Ba(HCO3)2

C. BaCO3 vàBa(HCO3)2

D. BaCO3 vàBa(OH)2

Answers

K=nCo2/nBa(OH)2=0,01/5*10^-3=2
Chỉ thu dc Ba(HCO3)2

Help ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)

Answers

Correct:

Delivers Nutrients to cells Removes waste materials from cellsProtects the body from pathogensHelps cuts and wound to heal.

Incorrect:

Brings carbon dioxide to cells for use.

Carbon dioxide is the waste product of cells that you let out each time you breathe.

Define the mass number of an atom

Answers

Answer:

The mass number of an atom, which is also called the atomic mass number,  is the total number of protons and neutrons in an atom,

Explanation:

Hope this is helpful.

How many molecules are in 25.3g of C2H4O

Answers

Answer:

0.57 molecules

Explanation:

does apple pie need to be stored in the refrigerator?

Answers

Answer:

yes/no

Explanation:

I prefere it refrigerated because it lasts longer in my opinion. but some people keep it out

Answer:

yes.

Explanation:

It does unless you want warm soggy pie.

Which statement is correct about the changes in fauna’s during one of these five major events

Answers

Answer:

source Mass extinctions are episodes in which a large number of plant and animal species become extinct within a relatively short period of geologic time—from possibly a few thousand to a few million years. ... Permian Period — 252 million years ago. Devonian Period — 359 million years ago. Ordovician Period — 443 million years

BP: Nowadays, scientists are aware of five mass extinction events in the past, starting with the End-Ordovician Extinction 450 million years ago and up to the End-Cretaceous Extinction that killed off the dinosaurs 66 million years ago

In your own words- Mass extinctions area unit episodes during which an oversized variety of plant and animal species become extinct at intervals a comparatively short amount of earth science time—from probably some thousand to some million years. ... Permian period — 252 million years past. period — 359 million years past. geological period — 443 million years

BP: today, scientists area unit alert to 5 mass extinction events within the past, beginning with the End-Ordovician Extinction 450 million years past and up to the End-Cretaceous Extinction that killed off the dinosaurs sixty six million years past

Explanation:

source is where i got this information and the in your own words is it fully rewritten hope this helps and my aplogies for making this so lengthy!

What is the correct term for plants releasing water from their leaves which then evaporates?

A.precipitation
B.transpiration
C.condensation

Answers

Answer:

Transpiration is the correct answer mark me brainliest

plz answer properly i need mt grades to be up​

Answers

Answer: 7

Explanation:

Se dispone de un recipiente de 60 litros que contiene un gas de 1,64 atm y a una temperatura de 100K ¿Cuántos moles de gas hay? *

Answers

En este caso, dado que se describe un gas del que se conoce el volumen (60L), la presión (1.64 atm) y la temperatura (100K), es posible usar la ecuación del gas ideal para calcular los moles que hay presentes a estas condiciones:

[tex]PV=nRT[/tex]

Ahora, despejamos las moles del gas como sigue:

[tex]n=\frac{PV}{RT}[/tex]

Finalmente, reemplazamos los valores dados, teniendo en cuenta que R es 0.08206 en atmosferas, litros y Kelvin:

[tex]n=\frac{1.64atm*60L}{0.08206*100K}\\\\n=11.8mol[/tex]

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https://brainly.com/question/15890754 https://brainly.com/question/22946811

Write and balance chemical reactions for the following reactions and name the reaction type:


a. Solid sodium oxide reacts with water to form sodium hydroxide

b. Solid aluminum metal reacts with aqueous zinc chloride.

c. C3H8 (g) + O2 (g) --->

2. Describe the three main types of radioactive decay and their properties.

Answers

Answer: The reaction of 1 mol of C to form carbon monoxide in the reaction 2 C(s) + O2(g) ( 2 CO(g) releases 113 kJ of heat. How much heat will be released by the combustion of 100 g of C according the the above information? According to the balanced chemical equation;

Explanation:

Which statement did Kepler’s investigations of the movement of the planets explain?


Gravity acts on all objects in the universe.


Jupiter has more moons than earth.


Earth is not the center of the universe.


The sun is more massive than earth.

Answers

The correct answer us the sun

Why do some experiments blow up?

Answers

Answer:

because of chemical reactions

Answer:

gases expand rapidly because their particles move at high speeds in all directions

Melting point of 20 g of ice

Answers

Answer:

6680 J

Explanation:

Which of the following is considered quantitative data?

A. Appearance

B. Smell

C. Temperature

Answers

Answer:

Temperature

Explanation:

This is because quantitative data include numerical values for example 10 degrees Celsius. However the others are qualitative data because the research can be described but not with numbers like your appearance is very nice.

Hope this helps :P

Answer:

Quantitative data is the type of data whose value is measured in the form of numbers or counts, with a unique numerical value associated with each data set. Also known as numerical data, quantitative data further describes numeric variables (e.g. How many? How often? How much?)

Explanation:

so its temp

Please help me no links
if good answer you get brainliest

Answers

The crystals will not be oxidised since it will be underground

Answer:

plutonic rocks are formed when magma cools and solidifies underground This shows us if the rock is plutonic or volcanic. When magma cools underground, it cools super slow and when lava cools above ground, it cools faster. When magma and lava cool, mineral crystals start to form in the molten rock.

Explanation:

i hope this is correct

The predicted yield for a reaction was 10g of product. If the percentage yield for this reaction was 50%, how much product was formed?​

Answers

The quantity of the product that was formed was 5g

From the question,

We are to determine the quantity of product formed. That is, the actual yield.

Using the formula

[tex]Percentage \ yield =\frac{Actual \ yield}{Theoretical\ yield} \times 100\%[/tex]

From the given information

Theoretical yield = 10g

Percentage yield = 50%

Putting the parameters into the formula, we get

[tex]50\% = \frac{Actual\ yield}{10} \times 100\%[/tex]

Then,

[tex]50\% = Actual\ yield \times 10\%[/tex]

∴ Actual yield = [tex]\frac{50\%}{10\%}[/tex]

Actual yield = 5g

Hence, the quantity of the product that was formed was 5g

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How many atoms of nitrogen are in 1.5 moles of aspartame?

Answers

Answer:

459.11 g.

Explanation:

hope this helps

Oxygen and Oxygen Ionic or Covalent? Defense how do you know

Answers

Answer:

oxygen are covalent bonds because they require 2 more electrons to obtain their octet shell

so when they combine with any other element, they form a covalent bond

Explanation:

Oxygen requires two shared electrons to fill its outermost shell therefore to covalent bonds form.

pls help! Two galaxies on opposite ends of the universe are moving away from the Earth. Each has a velocity of 200,000 km/s relative to the Earth. How fast would an observer in one of those galaxies see the other galaxy moving away?

A.200,000 km/s
B. between 300,000 and 400,000 km/s
c. between 200,000 and 300,000 km/s
D. 400,000 km/s

Answers

An observer in one of those galaxies see the other galaxy moving away at 400000 km/s.

Relative velocity is the velocity of an object with respect to another object, that is the time rate of change of relative position of one object with respect to another object.

Since two galaxy are moving in opposite directions with a velocity of 200,000 km/s. Hence the relative velocity between the two galaxies is 400000 km/s (200000 + 200000)

Therefore an observer in one of those galaxies see the other galaxy moving away at 400000 km/s.

Find out more at: https://brainly.com/question/12846122

Answer:

D 400,000km/s

Explanation:

LOTS OF POINTS Which statement about Fe is supported by the modern atomic theory but no John Dalton’s theory? Look at the pic provided for choices.

Answers

Answer:

https://brainly.com/question/19533453

Explanation:

This might be able to help you.

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