How would you write 0.620 in scientific notation?

Answers

Answer 1
6.20x10^-1 is the answer

Related Questions

What is the mass of 2.9 moles of calcium? Show all work!

Answers

Answer:

the mass of 2.9 moles of calcium is 116 g

Explanation:

The computation of the mass of 2.9 moles of calcium is shown below

As we know that

Mole = mass ÷  molar mass

where,

Moles be 2.9

And, we know that the molar mass of calcium be 40g/mol

Now put the values to the above formula

2.9 = Mass ÷ 40

So, the mass would be

= 40 × 2.9

=   116 g

Hence, the mass of 2.9 moles of calcium is 116 g

Why didn't you just clean the spill with water?

Answers

Answer:

if you did it would probably make it bigger...

Explanation:

:)

Which Sphere does condensation occur.

Answers

Answer:

The atmosphere, I believe.

Explanation:

Text 8.7 Using the virial equation of state for hydrogen at 298 K given in problem 7 (text 8.6), calculate a. The fugacity of hydrogen at 500 atm and 298 K b. The pressure at which they fugacity is twice the pressure c. The change in Gibbs free energy caused by a compression of 1 mole of hydrogen from 1 to 500 atm. What is the magnitude of the contribution to (c) caused by the non ideality of hydrogen

Answers

Answer:

a). P = 688 atm

b). P = 1083.04 atm

c).Δ G = 16.188 J/mol    

Explanation:

a). Fugacity 'f' can be calculated from the following equations :

[tex]$\ln \frac{f}{P}=\int^P_0\left(\frac{Z-1}{P}\right) dP$[/tex]

where, P = pressure ,  Z = compressibility

Now, the virial equation is :

[tex]$PV=R(1+6.4\times 10^{-4} P)$[/tex]  ........(1)

Also, PV=ZRT for real gases .......(2)

∴ [tex]$ZRT=RT(1+6.4\times 10^{-4} P)$[/tex]

  [tex]$Z=1+6.4\times 10^{-4} P$[/tex]

So from the fugacity equation ,

[tex]$\ln \frac{f}{P}=\int^P_0\left(\frac{1+6.4\times 10^{-4}P-1}{P}\right) dP$[/tex]

[tex]$\ln \frac{f}{P}=\int^P_0\left(\frac{6.4\times 10^{-4}P}{P}\right) dP$[/tex]

[tex]$\ln \frac{f}{P} = 6.4 \times 10^{-4} P$[/tex]

[tex]$f=Pe^{6.4 \times 10^{-4} P}$[/tex]

Putting the value of P = 500 atm in the above equation, we get,

f = 688 atm

b). Given f = 2P

    [tex]$2P=PE^{6.4 \times 10^{-4}P}$[/tex]

   [tex]$2=E^{6.4 \times 10^{-4}P}$[/tex]

  [tex]$\ln 2 = 6.4 \times 10^{-4}P$[/tex]

  ∴  P = 1083.04 atm

c). dG = Vdp -S dt  at constant temperature, dT = 0

Therefore, dG = V dp

[tex]$\int^{G_2}_{G_1}dG =\int^{P_2}_{P_1}V dp $[/tex]

            [tex]$=\int^{P_2}_{P_1}\frac{RT}{P}\left(1+6.4 \times 10^{-4}P\right) dP$[/tex]

           [tex]$=\int^{P_2}_{P_1}RT\frac{dp}{P}+\int^{P_2}_{P_1}RT6.4 \times 10^{-4} dP$[/tex]

[tex]$\Delta G=R[\ln\frac{P_2}{P_1}+6.4 \times 10^{-4}(P_2-P_1)]$[/tex]

[tex]$\Delta G=8.314\times 298[\ln\frac{500}{1}+6.4 \times 10^{-4}(500-1)]$[/tex]

Δ G = 16.188 J/mol  

Cl- and Ca2+

What is the same and what is
different for these two ions? Be specific and include numbers of any important
subatomic particles.

Answers

they are both in thier octet state

differences

Cl loses 1 electrons to become stableCa2 gains one electrons to become stable

PLZ HELP NEED HELP ASAP

Answers

Answer:

The third answer choice.


3.
Question
Many chemical warfare reagents readily convert into reactive 3-membered ring intermediates (although
maybe not the Joker's venom from the Batman comics). In turn, these intermediates can damage DNA by
what type of chemical reaction?
Your answer
O a. Elimination
O b. Sn1
OC. SN2
O d. None of the above​

Answers

Answer:

I think it's letter B

Explanation:

Hope it helps correct if I'm wrong

Bronze is a(n)
A. Alloy
B. Pure substance.
C. Element.
D. Compound.

Answers

Answer:....

Explanation:...

Question
In Woodward's 1952 synthesis of cholesterol, an elimination reaction was used to remove the C20 alcohol
substituent as shown below. The transformation is performed with acetic acid (hint: as opposed to a strong
base). Would you classify this as an E1 or E2 elimination?

Ola.E2
O b, E1​

Answers

hi do not press the link please it will cause a virus on your phone.

question in what words 1952 synthesis of cholesterol and illumination reaction was used to remove the C20 alcohol substitute as shown below the transformation is performed with acidic acid hint as opposed to a strong base would you classify this as an E1 or an E2 elimination.

Answer: I would classify this as an E2 :)

HELP ME PLS 20 POINTS

Answers

Answer:

1- Se 2-Na 3- I guess Si as well 4-Ar 5-O

Explanation:

Ionization energy increases as we go right in periodIonization energy increases as we go upwards in groupsAtomic radius increases as we go downwards in groupsAtomic radius increases as we go left in periodsAtomic radius decreases as we go right in periods so when atoms loses electron or more the smaller its radius becomes


What is the formula for the sulfate ion?

What is the formula for the sulfite ion?

What is the formula for the hydrogen sulfate ion?


Answers

Sulfate - SO4^-2

Sulfite - SO3^-2

Hydrogen Sulfate - HSO4-

How many moles of phosphorus are in a sample of 40.4 grams of phosphorus I NEED HELP FAST

Answers

Answer:

1.30 mol P

Explanation:

take what is given to you (40.4g). now divide it by the molar mass of the asked element (phosphorus = 30.97g/mol)

40.4g P / 30.97g/mol P = 1.30 mol P

hope this helps :)

BRAINLIEST WILL BE GIVEN TO BEST ANSWERED!
What is the best explanation for why a magnet is different from a regular piece of metal?

A magnet has more electrons

The magnetic domains in a magnet are lined up with each other

Magnets are made of iron

A magnet has an electric field

Answers

Answer:

the second one

Explanation:

metal doesn't act like a magnet because the domains don't have a preferred direction of alignment. Magnets are all aligned in a specific direction.

How many grams of iron can be extracted from 1.55 kg of iron(III) carbonate?

Answers

yes vrycdtyt day tvtvtvrs fbynunin

Phosphorus is implanted into silicon. The implant parameters are a dose of 1015cm-2at an energy of 150keV.a)Find the depth of the peak of the implant profile and its value at that depth.b)If the wafer originally had 1016cm-3of boron uniformly distributed throughout, find the depth(s) at which the concentration of phosphorus is equal to the concentration of boron.

Answers

Answer:

a)  ≈ 4.99 / cm^3

b)   0.515 um

Explanation:

Given data:

energy = 150 Kev

dose of 10^15 cm^-2

A) find the depth of the peak of the implant profile and its value at that depth

expression for implant profile = written below in the attached file

value of the peak depth ≈ 4.99 / cm^3

B ) determine the depth at which the concentration of phosphorus is equal concentration of boron

= 0.515 um

attached below is the detailed solution to the problem

In order to predict the outcome of the reaction, write the molecular, full ionic, and net ionic equations for a mixture of aqueous ammonia (NH3) and silver nitrate (AgNO3) in which a diammonia silver complex ion is produced. Molecular: Full ionic: Net ionic: Predict your observations based on above molecular equation: Actual observations:

Answers

Answer:

See explanation

Explanation:

Full molecular equation;

2NH3(aq) + AgNO3(aq) -------> [Ag(NH3)2]NO3(aq)

Full ionic equation

2NH3(aq) + Ag^+(aq) + NO3^-(aq) --------> [Ag(NH3)2]^+(aq) + NO3^-(aq)

Net ionic equation;

2NH3(aq) + Ag^+(aq) -------->  [Ag(NH3)2]^+(aq)

When Silver nitrate is mixed with a solution of aqueous ammonia, a white and cloudy solution was observed.

Is this statement true or false?

Living things are classified by shared characteristics.

Answers

Answer:

True!

Explanation:

Living things are classified by the characteristics they have in common. All living organisms are classified within the organization based on extremely fundamental, shared characteristics.

Heat of vaporization is the amount of heat required to
A. Evaporate a solid.
B. Evaporate a liquid.
C. Melt a solid.
D. Condense a vapor.

Answers

Heat of vaporization is the amount of heat required to melt a solid. Therefore option C is correct.

What is heat of vaporization ?

The amount of energy required to turn a portion of a liquid material into a gas is known as the enthalpy of vaporization, commonly referred to as the heat of vaporization or heat of evaporation. The pressure at which the transition occurs affects the enthalpy of vaporization.

The amount of energy required for one gram of a liquid to evaporate  without a change in pressure is known as the heat of vaporization. As the solid or liquid transitions into a less dense state of matter, these energies are required to disperse the intermolecular forces keeping it together.

vaporization is the process by which a material is transformed from its liquid or solid state into its gaseous  state. Boiling is the term for the vaporization process when circumstances permit the creation of vapour bubbles within a liquid.

Thus, option C is correct.

To learn more about heat of vaporization follow the link below;

https://brainly.com/question/9967928

#SPJ2

The amount of heat needed to cause a liquid to evaporate is known as the heat of vaporization. So, option B is right.

When a liquid is heated, the molecules at the surface of the liquid gain enough energy to escape from the liquid and become a gas. This process is called evaporation.

The heat of vaporization is the amount of heat that is required to vaporize one gram of a liquid at a constant temperature.

The heat of vaporization is different for different liquids. For example, it takes 2260 joules of heat to vaporize one gram of water at 100 degrees Celsius.

The heat of vaporization is a measure of the strength of the intermolecular forces in a liquid. The stronger the intermolecular forces, the more heat is required to vaporize the liquid.

Therefore, the answer is B, that the heat of vaporization is the amount of heat required to evaporate a liquid.

Learn more about vaporization here;

https://brainly.com/question/30078883

#SPJ6

6. How many sections are there to an SDS for a given chemical? *
(2 Points)
N.
8
10
14
16

Answers

The answer would be 16

Particle size directly affects which of the following spil properties?

Answers

Answer:

The size of soil particles is important. The amount of open space between the particles influences how easily water moves through a soil and how much water the soil will hold. Too much clay, in proportion to silt and sand, causes a soil to take in water very slowly. Such a soil gives up its water to plants slowly.

Write a balanced net ionic equation for each of the following aqueous metathesis reactions. Classify each reaction as a neutralization, precipitation, or gas--forming reaction.
A. Hydrobromic acid and cesium hydroxide.
B. Sulfuric acid and sodium carbonate.
C. Cadmium chloride and sodium sulfide.

Answers

Answer:

See explanation

Explanation:

A. This is a neutralization reaction.

Molecular equation;

HBr(aq) + CsOH(aq) ---------> CsBr(aq) + H20(l)

Complete ionic equation;

H^+(aq) + Br^-(aq) + Cs^(aq) + OH^-(aq)   --------> Cs^+(aq) + Br^- + H20(l)

Net ionic equation;

H^+(aq) + OH^-(aq)   -------->  H20(l)

B. This is a gas forming reaction;

H2SO4(aq) + Na2CO3(aq) ------->Na2SO4(aq) + H2O(l) + CO2(g)

Complete ionic equation;

2H^+(aq) + SO4^-(aq) + 2Na^+(aq) + CO3^2-(aq)  ------->2Na^+(aq) + SO4^-(aq) + H2O(l) + CO2(g)

Net ionic equation;

2H^+(aq) + CO3^2-(aq)  -------> + H2O(l) + CO2(g)

C. This a precipitation reaction

Molecular equation;

CdCl2(aq) + Na2S(aq) ------->CdS(s) + 2NaCl(aq)

Complete ionic equation;

Cd^2+(aq) + 2Cl^-(aq) + 2Na^+(aq) + S^2-(aq) ---------> CdS(s) + 2Na^+(aq) +  2Cl^-(aq)

Net ionic equation;

Cd^2+(aq) +  S^2-(aq) ---------> CdS(s)

Prepare methoxyethane by Williamson's
synthesis method. What happens when methoxyethane is
treated with excess HI?

Answers

If HI is present in excess and if temperature is high, methanol reacts with HI to form methyl iodide. (Not 100% sure)

What does the fossil record tell us about the evolution of the hominin skull?

The face grew wider as hominins evolved

The face stuck out farther from the rest of the skull as hominins evolved

The part of the skull surrounding the brain grew larger as hominins evolved

The part of the skull surrounding the brain grew more pointed as hominins evolved

Answers

Answer:

The part of the skull surrounding the brain grew larger as hominins evolved

The skulls are all casts of the original fossils. By determining the skulls we can explore the characteristics which reflect the evolutionary relationships. The part of the skull surrounding the brain grew larger as hominins evolved. The correct option is C.

What is hominin evolution?

Hominin evolution is characterized by two mains trends, transition to bipedality and increase in brain size. Fossil evidence shows that both trends had a major impact on the structure and function of the hominin skull.

Hominins or homo species are characterized by relatively and absolutely large brains, a modern skeleton, reduced tooth and jaw size and an involvement in cultural activities. Hominins have a larger cranial capacity and this is an indication of their brain size.

In addition, the contour of the hominin forehead eventually shifted from being angled to more vertical.

Thus the correct option is C.

To know more about hominin skull, visit;

https://brainly.com/question/31038585

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What kinds of matter have thermal energy

Answers

Answer:

Thermal energy comes from heat sources that provide energy from it's temp.

Explanation:

Produced when a rise in temperature causes atoms and molecules to move faster and collide with each other. The energy that comes from the temperature of the heated substance is called thermal energy. 6 min, 47 sec Heat Energy.

(If this doesn't help let me know in the comments, I'll try to explain better :> )


Suppose you are provided with a 36.89 g sample of potassium chlorate to perform this experiment. What is the mass of oxygen you expect
to release upon heating?

Answers

Answer:

14.45 g of O₂.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2KClO₃ —> 2KCl + 3O₂

Next, we shall determine the mass of KClO₃ that decomposed and the mass of O₂ produced from the balanced equation. This can be obtained as follow:

Molar mass of KClO₃ = 39 + 35.5 + (16×3)

= 39 + 35.5 + 48

= 122.5 g/mol

Mass of KClO₃ from the balanced equation = 2 × 122.5 = 245 g

Molar mass of O₂ = 2 ×16 = 32 g/mol

Mass of O₂ from the balanced equation = 3 × 32 = 96 g

SUMMARY:

From the balanced equation above,

245 g of KClO₃ decomposed to produce 96 g of O₂.

Finally, we shall determine the mass of O₂ produced by heating 36.89 g of KClO₃. This can be obtained as follow:

From the balanced equation above,

245 g of KClO₃ decomposed to produce 96 g of O₂.

Therefore, 36.89 g of KClO₃ will decompose to produce =

(36.89 × 96)/245 = 14.45 g of O₂

Thus, 14.45 g of O₂ were obtained from the reaction.

Will give brainlist please help

Answers

Staphylococcus

............

How does a jacket keep you warm?

Answers

It covers your body with cloth and acts as a protectant against harsh conditions. Its almost like a portable blanket!

Answer:

Your body releases heat. Your jacket helps your body preserve that heat by shielding the heat from going out in the cold.

a'Zorria Ward
An elevator traveled 15 floors (150 ft) at a speed of 4.5 m/s. What additional information is needed to determine the velocity of the elevator?
the direction the elevator traveled
how long the elevator was stationary
O how many times the elevator stopped
O the total mass of the elevator plus anything in it

Answers

Explanation:

An elevator traveled 150 ft at a speed of 4.5 m/s. What additional information is needed to determine the velocity of the elevator?

Velocity is vector quantity.So it needs direction in addoition to speed.

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion.

.
In an investigation, the volume of a material is measured
as 80.0 cm3 and its mass is measured as 253 g. Which
calculation of density correctly uses the precision rules:
3.1625 g/cm3, 3.163 g/cm3, 3.16 g/cm3, 3.2 g/cm3, or 3
g/cm3?

Answers

Answer:

3.2 g/cm3

Explanation:

Mass = 253 g

Volume = 80.0 cm3

Density = Mass / Volume = 253 g / 80.0 cm3

Density = 3.1625 g/cm3

The precision rule means the answer must not have more significant values than the value with the least number of significant figures. In this case, the value with the least number of significant figures is 80.0  with two signiificant figures. Hence;

Answer = 3.2 g/cm3

Which characteristic is a property of molecular
substances?
A. good heat conductivity
B. good electrical conductivity
C. low melting point
D. high melting point

Answers

Answer:

The correct answer is : C.

Explanation:

The characteristics of a property of molecular substances is low melting point.

Other Questions
Passage 1Graphic Novels Graphic novels became popular in the 1980s. A graphic novel is a type of long novel that combines images and words like a comic book. However, while a comic book tells a story in multiple parts over time, a graphic novel tells the entire story in one book. Graphic novels also have serious themes and amazing artwork. Graphic novels are not necessarily original pieces of work. Popular comic strips are usually redone as graphic novels. Will Eisner is considered to be one of the first graphic novelists in America. Today, he is known as "the father of the graphic novel." He published his first graphic novel in 1978. The paper quality of the graphic novel is also different from that of comics. After Eisner published his books, the demand for better types of comics increased.Passage 2Novels Novels are fictional works that use words to tell stories. Novels may have a few illustrations, but only to support the text. Reading novels helps improve the imagination of readers because they recreate scenes in their minds as they read the text. Reading novels also helps readers learn new words. Novels are a great form of entertainment for readers. Graphic novels, on the other hand, are novels that have words but also use images to tell the story. Readers enjoy graphic novels because colorful graphics accompany few words. People who do not enjoy reading dense text may find graphic novels more enjoyable. Despite the differences, both these mediums of storytelling have continued to flourish.1What conclusion can be made after reading both passages? A. Both novels and graphic novels have flourished even though they follow different styles of storytelling. B. Reading novels that are created using words improves the imagination because readers construct scenes in their minds while reading. C. Will Eisner's contribution to the literary world has helped all kinds of readers enjoy books. D. Will Eisner was the first graphic novelist and his work contributed to the popularity of graphic novels. Factorise the expressions and divide them as directed. The volume of the square pyramid is ___ cubic centimeters. Renaissance architects designed structures that were considered beautiful because of theirA. ornate religious imagery.B. simplicity of design.C. revival of medieval models.D. harmony and proportion. INEED HELP ASAPPP!!!ILL GIVE BRAINILY!!!!How are arthropods vital to fruit crops? actions to take to oppose discrimination at your school and in your community Someone please help me quick I've been stuck on this problem for 2 hours and my assignment is due at 10:30pm. A writing job requires the following lengths of BX cable:12 pieces 8 1/2 ft long7 pieces 18 1/2 ft long24 pieces 1 3/4 ft long12 pieces 6 1/2 ft long2 pieces 34 1/4 ft longHow much cable is needs to complete the job?please answer step-by-step please, thank you where does pressure come from? Which of the following is a majorcharacteristic of Impressionism?Expressing a vision of fleeting moments in timeCapturing the effects of lightUsing short, quick brushstrokes and pure, bright colorsAll of these are correct Mary bought a blanket that was 2 1/4 meters long and 1 1/2 meters wide. What is the perimeter of her blanket? The answer for this question is C In Act III of the play, Mark Antony speaks at the funeral of his friend, Julius Caesar. How is the text presentation of this scene different from the film presentation?The text provides a detailed description of the setting, while the film focuses only on the characters.The text provides both Antony's speech and his thoughts as he is speaking.The film only includes his words.In the text, Antony's actions as he speaks are unknown. In the film, they are clearly conveyed.In the text, Antony is mournful and still, while in the film he is angry and animated. 4. The length of a rectangle is represented by 8x-3. The width of therectangle is represented by 2x. The perimeter is 34 centimeters. Whichequations represent the perimeter? Choose all the correct answers.A. 4(2x+8x-3)=34B. 2(2x)+2(8x-3)=34C. 2x+8X-3+2x+8x-3=34D. 20x-6=34E. 2x(8x-3)=34I NEED THIS ASAP!!!!! pls help guys. i have to get a good grade thx 15. Circle all of the expressions equivalent to 9x - y.A (3x2 - y)B. (3x)2-0)C 9(x2)-6)D. (932) 2-6)E. (3x2 + y)(3x2-y) Slope= -1/2 Line passes through the point (9,8). Write equation with point slope form what were the primary ethnic components of the Austro Hungarian Empire? How could placing his image on coins help Chandragupta rule his empire? Fill in the missing spot with the correct fraction. The difference between mediation and arbitration is that __________. Group of answer choices in mediation the mediator is brought into the dispute to resolve the issues, whereas in arbitration the arbitrator merely listens to the dispute in arbitration the arbitrator actually decides who is right and who is wrong, whereas in mediation the mediator suggests different outcomes in mediation there must be a union representative present, whereas in arbitration no union representative attends in arbitration there is both a mediator and an arbitrator present who decide the outcome of the dispute