Why are standard electrode potentials usually measured at 1.0 M electrolyte concentration?

Answer:

I don't know

Explanation:

just wanna talk because I am getting bored.

Answer:

B)

takes mechanical energy and makes it electrical

Explanation:

Answer:

moles of calcium hydroxide= 21.75 mol

a) 43.5 mol

b) 7.25 mol

Explanation:

Please see the attached picture for the full solution.

Answer:

Yes, the correct answer is C) Ear Canal

Explanation:

Answer:

The given substance is cast iron.

Explanation:

Given data:

Mass of substance = 50 g

Heat absorbed = 23000 J

Initial temperature = 250°C

Final temperature = 1250°C

Which metal is this = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 1250°C -  250°C

ΔT = 1000°C

23000 j = 50 g ×c ×1000 °C

23000 J = 50,000 g. °C×c

c = 23000 J /50,000 g. °C

c = 0.46 J/g.°C

The given substance is cast iron.

Answer: it's nonmetal

Explanation: Sulfur has characteristics of nonmetals. It does not have luster, it cannot conduct electricity, and it is brittle. On the periodic table, sulfur is in group 16/VIA, in the third period. The group is called the oxygen group or the chalcogens.

Answer:

i dont know

Explanation:

ありがとう私は本当にこの励ましが必要でした :)

Answer:

see explanation

Explanation:

If we look at the structures of each of the compounds we can be able to deduce the accurate hybridization of each of the atoms listed.

Looking at ClNO - we can see that the nitrogen atom is linked to oxygen by a double bond and linked to chlorine by a single bond retaining a lone pair on nitrogen. Hence the nitrogen is in sp2 hybridized state.

For ClOCl, the compound has a sp3 hybridized oxygen atom linked to two chlorine atoms as expected retaining two lone pairs on oxygen.

For NCOH, the carbon atom is doubly bonded to oxygen hence it is sp2 hybridized.

Answer:

A) Label 2 (Sp2)

B) Label 3 (Sp3)

C) Label 1 (Sp)

Explanation:

A) Have 7 Lone Pairs (LP) to place. 1 on N. 1 becomes a double bond. Double bonds count as 1 Electron Group. Same for single bond and LP. Add these to get 3. 3 coresponds for SP2

B) 8LP. 2LP on O. 2 bonds to O. Add to get 4. 4-> Sp3

C) 5LP. C O bond is double. single bond to N. Add to get 2-> Sp

Answer:

large object to small objects

Answer:

The answer is C or warm objects to cool objects

Explanation:

Heat is the thermal energy flows from one substance to another when the substances differ in temperature. When you drink hot chocolate the heat from the liquid will flow to your mouth.

Answer:

It is a fair statement of fact

Explanation:

The statement is a fact that is unopinionated and it does not exaggerate details of the event it just states the fact without opinions or exagerrations. This is why its unbiased.

The statement that is given is free of bias because It is a fair statement of fact. The correct option is B.

A statement is affirmative that is proposed and based on facts or the condition of the situation. It is a declaration. Statements don't pose queries, issue requests, or issue directives. They are not exclamations, either.

Scientific statements are generally based on facts and true results that came from an experiment. Like the one here, about Mount Vesuvius.

The statement simply tells the truth without opinions or exaggerations; it is a fact that is opinionated but does not embellish the specifics of the occurrence. This is why it is objective.

Thus, the correct option is B. It is a fair statement of fact.

To learn more about the statement, refer to the below link:

https://brainly.com/question/24071808

#SPJ2

Answer:

Water - Formula: H2O = Hydrogen2 + Oxygen. ...

Hydrogen Peroxide - Formula: H2O2 = Hydrogen2 + Oxygen2 ...

Salt - Formula: NaCl = Sodium + Chlorine. ...

Baking Soda - Formula: NaHCO3 = Sodium + Hydrogen + Carbon + Oxygen3 .

Octane - Formula: C8H18 = Carbon8 + Hydrogen18

are 5 examples

Explanation:

Answer:

8.45 M

Explanation:

To solve this problem we need to keep in mind the definition of molarity:

First we calculate the moles of AlCl₃ in 0.672 L of a 4.78 M solution:

Then we calculate the new molarity of the AlCl₃ solution using that number of moles, which remains the same throughout the evaporation process:

Answer:

[tex]\Delta S=900\frac{J}{K}[/tex]

Explanation:

Hello!

In this case, since the information is not missing, the following one will be used as it is found on similar problems:

[tex]\Delta h=26.7kJ/mol\\T_b=34.6\°C\\m=769.0g[/tex]

In such a way, we use the following equation to compute the entropy:

[tex]\Delta S=\frac{n\Delta h}{T_b}[/tex]

Whereas n (moles) are computed by using its molar mass (74.14 g/mol) as follows:

[tex]n=769.0g*\frac{1mol}{74.14g}=10.4mol[/tex]

[tex]\Delta S=\frac{10.4mol*26.7\frac{kJ}{ml} }{(34.6+273.15)K}\\\\\Delta S=0.900 \frac{kJ}{K} \\\\\Delta S=900\frac{J}{K}[/tex]

Best regards!

Answer:

Arthropod (3)

Annelids (2)

Cnidarians (1)

Echinoderms (4)

Explanations:

I hope all this helps if u don't understand it let me know.

Answer:

Explanation:

intristing

Answer:

The answer is 0.0050028516254265.

Explanation:

Answer:

joe.......

Explanation:

mama......

Answer:

[tex]\huge\boxed{\sf Option \ B}[/tex]

Explanation:

=> Weight is an attractive force which is exerted on any body.

=> It changes when the object's place changes as it depends upon the acceleration due to gravity ( g = 9.8 m/s ) which changes as we move from place to place.

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

Answer:

it is b (they are soluble)

Explanation:

got it right on edg and on quizlet

Answer:

B. They are soluble

Explanation:

Answer:

a. 2.41 g

Explanation:

First we calculate the number of lithium ion moles (Li⁺) in the solution, multiplying the concentration times the volume:

500 mL ⇒ 500 / 1000 = 0.500 L

Then we convert moles of Li⁺ to moles of Li₃PO₄, keeping in mind that for each mole of Li₃PO₄ there are 3 Li⁺ moles:

Finally we convert Li₃PO₄ moles to grams, using its molar mass:

The mass of lithium phosphate, Li₃PO₄ required to prepare the solution is 2.41 g

The correct answer to the question is Option A. 2.41 g

We'll begin by calculating the concentration of Li₃PO₄. This can be obtained as follow:

Li₃PO₄(aq) —> 3Li⁺(aq) + PO₄³¯(aq)

From the balanced equation above,

3 moles of Li⁺ is present in 1 mole of Li₃PO₄.

Therefore,

0.125 M Li⁺ will be present in = 0.125 / 3 = 0.0417 M Li₃PO₄.

Thus, the concentration of Li₃PO₄ is 0.0417 M

Molarity of Li₃PO₄ = 0.0417 M

Volume = 0.5 L

Mole = Molarity x Volume

Mole of Li₃PO₄ = 0.0417 × 0.5

Mole of Li₃PO₄ = 0.02085 mole

Molar mass of Li₃PO₄ = (3×7) + 31 + (16×4) = 116 g/mol

Mass = mole × molar mass

Mass of Li₃PO₄ = 0.02085 × 116

Thus, the mass of Li₃PO₄ required to prepare the solution is 2.41 g

The correct answer to the question is Option A. 2.41 g

Learn more: https://brainly.com/question/3126258

Answer:

In atomic physics and quantum chemistry, the electron configuration is the distribution of electrons of an atom or molecule in atomic or molecular orbitals. For example, the electron configuration of the neon atom is 1s² 2s² 2p⁶, using the notation explained below

Explanation: welcome

Answer:

distillation

Explanation:

i did the assignment

Answer:

distillation

Explanation:

Answer:

i think the answer is b

Explanation:

it is for sure sure false

Answer:

False they are on the extremes of the earth they are poles they are so cold the temp is freezing there and near the equator it would hot

Answer: 143*tank temperature/tank pressure L

Explanation: too few data. Need to know the pressure and what if any, temperature change.

tank volume = (tank temp/tank pressure)*(500*200/700) = 143*tank temp/tank pressure L

At constant temperature, (500*700)/tank temp

e.g. at 1400mm Hg, 500*700/1400 = 250L

Answer:

2984.52J

Explanation:

Using the formula: Q = m × c × ∆T

Where;

Q = amount of heat (in Joules)

m = mass (in grams)

c = specific heat capacity (J/g°C)

∆T = change in temperature (°C)

Based on the information provided in the question;

m = 34.0g

c = 4.18 J/gºC.

Initial temperature = 55.0°C

Final temperature = 76.0°C

Hence, Q = m × c × ∆T

Q = 34 × 4.18 × (76 - 55)

Q = 142.12 × 21

Q = 2984.52J

Therefore, 2984.52J is the amount of heat, in Joules, needed to raise 34.0g of the water.

Answer:

The scientist classify the types of soil based on the texture of the soil, the type of Rock from which they are formed and the type of organisms which live in the soil. For example red soil is formed by the weathering of reddish type of Rock which is found in that territory.

Explanation: google and me.....hope this helps

One factor which scientists used to classify orders of is Soil texture

Soil texture is a classification strategy that scientists used to determine soil classes orders based on their physical texture.

Soil texture and soil structure are unique properties of the soil that will have a great effect on the behavior of soils, such as water holding capacity, nutrient retention and supply, drainage, and nutrient leaching.

Learn more:

https://brainly.com/question/25761065

Answer:

V₂ = 90.42 L

Explanation:

Given data:

Initial volume = 21.4 L

Initial pressure = 681 mmHg (681/760=0.89 atm)

Initial temperature = 42.3 °C (42.3 +273 = 315.3 K)

Final temperature = 221°C (221+273 = 494 K)

Final volume = ?

Final pressure = 248 mmHg(248/760 =0.33 atm)

Formula:

P₁V₁/T₁ = P₂V₂/T₂  

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

P₁V₁/T₁ = P₂V₂/T₂  

V₂ = P₁V₁T₂/T₁P₂

V₂ = 0.89 atm × 21.4 L × 494 K / 315.3 K × 0.33 atm

V₂ = 9408.72 L /104.05

V₂ = 90.42 L

The rate constant : b. 1/ M² · s

The reaction rate (v) shows the change in the concentration of the substance (changes in addition to concentrations for reaction products or changes in concentration reduction for reactants) per unit time.  

For A + B  ---> C + D

Can be formulated:

[tex]\large{\boxed{\boxed{\bold{v~=~k.[A]^a[B]^b}}}[/tex]

where

v = reaction speed, M / s

k = constant, mol¹⁻⁽ᵃ⁺ᵇ⁾. L⁽ᵃ⁺ᵇ⁾⁻¹. S⁻¹

a = reaction order to A

b = reaction order to B

[A] = [B] = concentration of substances

Units of the rate constant - k depend on rate law, so it is unique for the specific reaction

So for the rate law :

Δ[C]/ΔT = k[A]²[B] , the units are :

[tex]\tt \dfrac{M}{s}=k\times M^2\times M\\\\k=\dfrac{M/s}{M^2\times M}\\\\k=\dfrac{1}{M^2.s}[/tex]

D

Explanation:

i hope so it is the answer