What element is steel mainly composed of?
A. Iron
B. Carbon
C. Manganese
D. Silver

Answers

Answer 1
Steel is an alloy that is mainly comprised of CARBON. Hope this helps and give thanks plsss!
Answer 2
Its iron. Carbon is present but very low quantity

Related Questions

A student cut out a spiral shape from a piece of tissue paper and hung it from a string over a light bulb. Nothing happened. Next the student turned on the light. After a few seconds, the spiral began to turn above the light. Which of these best explains what happened?​

Answers

Answer:

See explanation

Explanation:

Initially, when the paper is hung over the light bulb, we observe that nothing happens at all.

As time goes on, air surrounding the lamp begins to heat up. Remember that hot air is lighter and less dense than cold air.  Air surrounding the lamp which has now become hotter and less dense rises and pushes on the spiral. This causes the spiral to begin to spin.

4) How does an atom have a charge of -3?

Answers

Answer:

When the electrons hit the atoms in the chamber, they cause some of the electrons in the atoms to be stripped or knocked away. ... When one or more electrons is knocked off of an atom, it becomes positively charged. It is now an positive ion. A negative ion can be made by adding an electron to an atom.

Explanation:

A voltmeter is a device that measures electricity. It can detect the amount of electricity between two electrodes when they are submerged in a solution, such as salt water. Describe how you would find the melting point and the conductivity of the white substances in the beakers. Then, explain how you could identify which substance is salt and which is sugar.

Answers

Answer:

Explanation:

To determine the melting point of the unknown white substances. A sample of each of the unknown can be placed in separate capillary tubes and then placed in an adjustable heat source (for example water bath). A thermometer is then placed in the heat source very close to the tube holding the sample. The temperature of the heat source will be adjusted until the solid substance in the capillary tube starts to melt, the temperature at this point is noted as the melting point.

To determine the conductivity of the white substances, an electrolysis experiment is done. A sample each of the unknown substances is dissolved in water. These aqueous solutions are prepared separately. Two electrodes (positively charged anode and negatively charged cathode) are dipped into each of these solutions and an electric current is passed through these solutions, from an energy source (such as batter), through the electrodes (with the electric current flowing from the anode to the cathode). A voltmeter is then connected to this set-up to determine if electricity is been passed through the individual solutions.

The substance that is the salt will be the white substance that has the higher melting point and conducted electricity in the electrolysis set up; this is because NaCl salt is an ionic compound which has a high melting point and conducts electricity when dissolved in water. While the white substance that had a lower melting point and did not conduct electricity will be the sugar; this is because sugar/sucrose is an organic substance that has a low melting point and does not conduct electricity when dissolved in water.

7. Think and discuss: As you move down a group, you will recall that the radius increases.

Why do you think an increase in atomic radius would result in a lower

ionization energy?

8. Think and discuss: As you move across a period, you will recall that the radius decreases.

Why do you think a decrease in atomic radius would result in a greater ionization energy?

9. Predict: Electron affinity (EA) refers to the energy released when an electron is added to

an atom. This release of energy is always expressed as a negative value. The greater the

magnitude of the negative value, the greater the attraction for electrons. (An EA of -100

kJ/mol would indicate a stronger attraction for electrons than an EA of -50 kJ/mol.)

How do you think the size of an atom will affect its ability to attract additional electrons?

Answers

Answer:

See explanation

Explanation:

7. As we move down the group more shells are added. The addition of more shells means that the atom becomes larger and the outermost electron is now at greater distance from the nucleus and screening effect becomes very important. This greater screening effect of the inner electron reduces the magnitude of effective nuclear charge on the outermost electron thereby lowering the ionization energy.

8. As we move across the period, the effective nuclear charge increases without a corresponding increase in the number of shells. As a result of this, the outermost electron becomes more tightly bound to the nucleus as the atom becomes smaller and atomic radius decreases causing a rise in the ionization energy from left to right across a period.

9. Actually, the smaller an atom is the greater its electron affinity. The smaller the atom is, the more the outermost shell is drawn closer to the nucleus and this means that the atom is better able to attract electrons to itself.

It is due to the size of atom which varies its force of attraction.

As you move down a group, the atomic radius increases due to addition of more number of shells in an atom.  This increase in atomic radius would result in a lower  ionization energy because the valance electron is farther from the nucleus and held with weak attractive force so less energy is required to remove it.

While on the other hand, as we move from left to right in a periodic table the atomic radius decreases due to addition of more electrons which shrinks the atom and brought the valance shell closer to the nucleus so it becomes harder to remove an electron because the nucleus held these electrons very tightly.

The size of an atom will affect its ability to attract additional electrons because of its force of attraction. Atoms with small radius has more ability to attract electrons due to higher force of attraction as compared to higher atomic radius atoms.

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Which mineral can be found in the rocks phyllite, sandstone, and granite?
1.
quartz
2.
pyroxene
3.
gypsum
4.
calcite
Sub

Answers

Answer:

1 quartz

Explanation:

pls tell me if I'm wrong

Quartz can be found in the rocks phyllite, sandstone, and granite.

Hence, Option (1) is correct answer.

What is Rocks phyllite ?

Rock phyllite are composed of mainly quartz, mica and chlorites. It is a soft and durable rock.

What is Sandstone ?

Sandstone are composed of mainly quartz, feldspar and lithic fragments. It is a sedimentary rock.

What is Granite ?

Granite are composed of three minerals mainly that is quartz, plagioclase and potassium feldspar and usually carry mica or hornblende. It is a light coloured igneous rock.

Thus from above conclusion we can say that Quartz can be found in the rocks phyllite, sandstone, and granite.

Hence, Option (1) is correct answer.

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Help!!
What is the concentration of an unknown with an absorbance of 0.4 using the plot?

Answers

Answer:3,4,1,2

Explanation:

hope this helped

What is the unit of temperature on a solubility graph

Answers

Answer:

Khfxgkhxxkfhkugxxiufxhfixiyf

Explanation:

Xlufy8fxtukuxfxtu

Answer: Celsius

Explanation:

can anyone help me with this problem :)
The formula of ascorbic acid (vitamin C) is C6H8O6 The recommended dose is 60.0 mg. How many moles are in this dose

Answers

Answer:

0.0003 moles

Explanation:

MgC6H8O6 = (60.0mg/1)(1 mol mg/176000mg)

What does it mean when an element has no subscript in a chemical formula?

Answers

Answer:

the element has no subscript because it is only one atom of it

Explanation:

If there isn't a subscript, it's presumed that there is only one atom of that element present.

What is subscript?

Subscript is defined as a character that is printed slightly below and to the side of another character, commonly a letter or a number. A subscript is a character that is printed slightly below and to the side of another character, commonly a letter or a number. Chemists frequently employ subscripts in their formulations.

There is no number written if there is just one atom. The number is given as a subscript after the atom if there are multiples of a particular kind of atom. The number on the right side of the symbol indicates how many atoms of that element are contained in the molecule. The atomic number of an element is shown as a subscript on the left-bottom corner of a stand-alone symbol.

Thus, if there isn't a subscript, it's presumed that there is only one atom of that element present.

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How do the products of chemical reactions compare to their reactants?

Question 5 options:

The products often have completely different properties than the reactants.


The products usually weigh more than the reactants.


The products usually have more atoms than the reactants.


The products are usually more toxic than the reactants.

Answers

Answer: The products usually weigh more than the reactants.

Explanation:

Answer:

A

Explanation:

i just took the k12 test

25 pts
3. Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture.
Describe the forces that hold the nucleus together and draw them on your diagram.
Explain how beta emission works

Answers

Answer:

2 circles one proton and one nucleon.draw quarks within each. strong nuclear force within protons between quarks and residual strong force between proton and nucleon (up,up,down in proton)

Explanation:

A 55.0 kg runner who weights 539.0 N is accelerating at 3.2 m/s. After 2 seconds, she reaches a speed of 6.4 m/s. What is her momentum at this point?

Answers

Answer:

352kg.m/s

Explanation:

Momentum is the product of mass and velocity. Momentum is a vector quantity. Momentum is the measurement of an object in motion thereby showing how much of the object is in motion. The formula of momentum (p) is given as:

p = mass * velocity

Given that the runner has mass of 55 kg, the momentum at a speed of 6.4 m/s is:

Momentum = mass * velocity = 55 * 6.4 = 352kg.m/s

Answer:352

Explanation:

I need the “why” also. Will mark brainliest

Answers

BeO
- the charges of the elements need to balance
- Be has 2+ charge
- O has 2- charge
- so the charges will cancel out and balance

How long does it take to melt a single brick, how many mins?

Answers

Answer:

it depends upon the material used to make the brick

74 minutes I believe, really shot in the dark there

Which of the following choices contains the most thermal energy?


a penny that is 20 degrees Celsius ( oC)


an atom of aluminum that is 20 degrees Celsius ( oC)


a 50 milliliter (ml) glass of water at 20 degrees Celsius ( oC)


a 900 milliliter (ml) pitcher of orange juice at 20 degrees Celsius ( oC)

Answers

Answer:

Honestly no idea

Explanation:

FOOOOOOOOD

Use the periodic table to write the electron configuration of selenium (Se). s s p d 1 2 3 4 6 10

Answers

Answer: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^4

Explanation:

I suggest looking at the electron configuration chart, it has really helped me a lot :)

Answer:

[Ar] 3d10 4s2 4p4

Explanation:

what type of data do you need to find the density of an object

Answers

The mass and volume. M/V=Density

Which one does Temperature measure

A. how many particles there are.
B. how fast the particles are moving.
C. how tightly packed the particles are.
D. how large the particles are.

Answers

Answer:

B. how fast the particles are moving

Explanation:

Temperature measures the average kinetic energy of system as result of the thermal - heat energy present in the reaction or a body.

Often times, temperature is the degree of hotness or coldness of a body and this translates to an increase or decrease in the molecular speed.

Number of particles in a body is the mass of the body. How tightly packed the particles are corresponds to the density of the body.

Which is NOT a shape of epithelial cells?
A.Cuboidal
B.Columbar
C.circular
D.squamous

Answers

B.should be *columnar, but C.Circular is the answer

I need help (yes agian)

Answers

Answer 1: The two most basic types of bonds are characterized as either ionic or covalent. In ionic bonding, atoms transfer electrons to each other. ... In contrast, atoms with the same electronegativity share electrons in covalent bonds, because neither atom preferentially attracts or repels the shared electrons.

Answer 2 : In ionic bonding, the atoms are bound by attraction of oppositely charged ions, whereas, in covalent bonding, atoms are bound by sharing electrons to attain stable electron configurations.

Answer 3 : Each nitrogen molecule consists of two atoms of nitrogen that are bonded by a triple covalent bond. This is a direct consequence of the fact that each nitrogen atom has 5 valence electrons. Each atom can thus complete its octet by sharing three electrons.

Bark bark Hope this helps :)

Answer:

O_o

Explanation:

How many molecules does it take to form 3.00 moles of Silver nitrite (AgNO2)?

Answers

Answer:

1.806 × 10²⁴ molecules

Explanation:

The number of molecules of silver nitrite can be found by using the formula

N = n × L

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 3 × 6.02 × 10²³

We have the final answer as

1.806 × 10²⁴ molecules

Hope this helps you

Which particle has a higher rate of deposition

Answers

A particle with jagged, rough ends has a high rate of deposition.

Answer:it’s c

Explanation:

Edge 2021

PLEASE HELP A car burns gasoline to create hot air gas that expands to move the pistons in the engine, which causes the car to be able to move.

What energy transformations occur from the fuel to the movement of the car?



Thermal to mechanical

Thermal to chemical to mechanical

Chemical to thermal to mechanical

Chemical to electrical

Answers

Answer:

Chemical to thermal to mechanical

Explanation:

It is because gasoline is chemical energy which turns to thermal. Because it said hot gas which is thermal energy. Then it turns to mechanical for the car to even move.

All seeing eyes:

i know your answer it is the third one (C, chemical to thermal to mechanical)

Explanation:

my all seeing eyes know all the answers

If a neutral atom with 88 electrons undergoes 2 rounds of beta minus decay, what will be the new element?

Answers

Answer:

The new element will be thorium-226 (²²⁶Th).

Explanation:

The beta decay is given by:

[tex] ^{A}_{Z}X \rightarrow ^{A}_{Z+1}Y + \beta^{-} + \bar{\nu_{e}} [/tex]

Where:

A: is the mass number

Z: is the number of protons  

β⁻: is a beta particle = electron

[tex]\bar{\nu_{e}}[/tex]: is an antineutrino

The neutral atom has 88 electrons, so:

[tex] e^{-} = 88 = Z [/tex]

Hence the element is radium (Ra), it has A = 226.

If Ra undergoes 2 rounds of beta minus decay, we have:

[tex] ^{226}_{88}Ra \rightarrow ^{226}_{89}Ac + \beta^{-} + \bar{\nu_{e}} [/tex]    

[tex] ^{226}_{89}Ac \rightarrow ^{226}_{90}Th + \beta^{-} + \bar{\nu_{e}} [/tex]

Therefore, if a neutral atom with 88 electrons undergoes 2 rounds of beta minus decay the new element will be thorium-226 (²²⁶Th).

I hope it helps you!    

If 10 cubic centimeters of a liquid has a mass of
70 grams, what is its density?
A. 0.7 g/cm3
B. 7 g/cm3
C. 70 g/cm3
D. 700 g/cm

Answers

Answer:

V = 10 m³

m = 70 grams

density = ....?

density = m/v

= 70/10

= 7 g/cm³ (B)

Do nonmetal gases have a lot or a little kinetic energy?
Yes
No
Maybe

Answers

Answer:

No they do not have a lot of kinetic energy

I’m pretty sure the answer is no

What is the molarity of a solution prepared by diluting 43.72 ml of 1.005 M aqueous K2CR2O7 to 500 ml

Answers

Answer:

43.72

Explanation:

that is the answer hope u liked it and I did this already along time ago

The molarity of the solution will be "0.088 M".

Given values are:

Volume,

[tex]V_1 = 43.72 \ ml[/tex][tex]V_2 = 500 \ ml[/tex]

Molarity,

[tex]M_1 = 1.005 \ M[/tex][tex]M_2 =?[/tex]

By using the Dilution principle, we get

→ [tex]M_2 = \frac{M_1 V_1}{V_2}[/tex]

By substituting the given values, we get

→       [tex]=\frac{1.005\times 43.72}{500}[/tex]

→       [tex]= \frac{ 43.9586}{500}[/tex]

→       [tex]= 0.088 \ M[/tex]

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Explain the relationship between protons and ionization energy

Answers

The more protons in the nucleus, the stronger the attraction of the nucleus to electrons. This stronger attraction makes it more difficult to remove electrons. Within a group, the ionization energy decreases as the size of the atom gets larger.

Which force is stronger? 40 N → or ← 4.218 Newtons

Answers

Answer:

40 Newtons

Explanation:

4.218 is not even close to 40 N.

The 40 N force must be the larger force because 40 has a larger magnitude than the 4.218.

Magnitude of a force?

The term magnitude has to do with how large the force is. The larger the force the larger the value that is mentioned.

This implies that the 40 N force must be the larger force because 40 has a larger magnitude than the 4.218.

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The reaction for the combustion of acetylene is shown. Explain why this reaction is a redox reaction by identifying the oxidation numbers that change, what is oxidized, what is reduced, and what happens to the electrons during the reaction. 2C2H2 + 5O2 → 4CO2 + 2H2O

Answers

Answer:

2 C2H2 (g) + 5 O2 (g) → 4 CO2 (g) + 2 H2O (l)

Explanation:

Redox reaction: In this type of reaction, oxidation and reduction reaction occurs simultaneously in same chemical reaction.

2C_2H_2+5O_2\rightarrow 4CO_2 + 2H_2O2C

2

H

2

+5O

2

→4CO

2

+2H

2

O

This reaction is a redox reaction :

Removal of hydrogen or addition of oxygen is termed as oxidation. in above reaction, removal hydrogen from acetylene gives carbon-dioxide.

Removal of oxygen or addition of hydrogen is termed as reduction. in above reaction, removal of one oxygen atom from oxygen molecule with addition of two hydrogen atoms gives water

The oxidation number of carbon in acetylene is -2.

The oxidation number of carbon in carbon-dioxide= +4

Oxidation number of carbon increases after the reaction which means that carbon is getting oxidized.

The oxidation number of oxygen in oxygen gas = 0

The oxidation number of oxygen in water = -2

Oxidation number of oxygen decreases after the reaction which means that oxygen is getting reduced.

The electrons released during oxidation are transferred to the species which are undergoing reduction reaction.

Answer:

Just put this, or something like it:

The oxidation number of carbon changes from -1 to +4.

The oxidation number of oxygen changes from 0 to -2.

Carbon is oxidized.

Oxygen is reduced.

Electrons are transferred from carbon to oxygen.

Explanation:

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Which three sentences in the passage best show the author's belief that Plymouth Colony's fate was guided by divine Providence?A) And of these in the time of most distress, there was but 6 or 7 sound persons, who, to their great commendations be it spoken, spared no pains, night nor day, but with an abundance of toil and hazard of their own health, fetched them wood, made them fires, dressed them meat, made their beds, washed their loathsome clothes, clothed and unclothed them; in a word, did all the homely and necessary offices for them which dainty and queasy stomachs cannot endure hearing named; and all this willingly and cheerfully, without any grudging in the least, showing herein their true love unto their friends and brethren. A rare example and worthy to be remembered. Two of these were Mr. William Brewster, their reverend Elder, and Myles Standish, their Captain and military commander, unto whom myself, and many others, were much beholden in our low and sick condition. 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