which element has an atom with the following composition? 24 protons, 28 neutrons and 24 electrons.

Answers

Answer 1
Chromium - 28

The amount of protons is equal to the atomic number and this can always be used to identify the element

Related Questions

what is the density of an object with a mass of 100 grams and a volume of 50 cm​

Answers

Answer:

2

Explanation:

because 100÷50=2m÷v=d

place the items in order from highest to lowest degree of internal organization.

tissue
organ system
organ
cell

Put them in order please PLEASE​

Answers

ddjjfjrjejdjfj figure. tjdiskwe. fjickeke

Answer:

I hope this helps! Can I have Brainliest plz :)

Explanation:

if the gas has a volume of 20 L at a temperature of 25 Celsius what is the volume of the gas when it is heated to 100°C if the pressure remains constant

Answers

Answer:

i have no idea

Explanation:

lol

Answer:

this has to do with gas law

Explanation:

Charles law

v1=20

T1=25

V2=?

T2=100

hence V1/T1=V2/T2

V2=V1*T2/T1

V2=20*25/100

V2=5

Is the following an element, compound, homogeneous mixture, or heterogeneous mixture?

Coca-cola

Answers

Answer:

CO2 is classified as a compound

Explanation:

help me please im in 4th grade and online is frustrating

Answers

Answer:

A

Explanation:

The answer is A) because the A container has tightly packed molecules but not as tight as C so that means A is liquid, and C is a solid which makes B a gas

Answer:

The answer would be A

Explanation:

because in the first picture Liquid could be in many shapes like If I put water in my water bottle it would be the same shape as the water bottle.

In the third picture, the solid molecules will always be so close to each other like they will be stick to each other.

In the second picture, It will be separate always, as it cant stick to each other.

I hope I helped you!!!!

:)

Question 4 (4 points)
Special bonds formed because of electrostatic interaction between molecules are called

A.intermolecular forces
B. intramolecular forces
C.permanent forces
D.magnetic forces

Answers

Answer:

A. intermolecular forces.

Intermolecular force hope it helps

what is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons

A,22, B.23, C34, D 11

Answers

Answer:

23, B

Explanation:

The mass of an atom is determined by the number of Protons + Neutrons. Here, if we assume the units is AMU (Which means the mass unit for a proton and neutron would be basically 1), the answer would be 11 + 12 = 23 AMU, which is B.

Answer:

B) 23

Explanation:

Relative Mass = number of protons + number of neutrons

Relative Mass = 11 + 12

Relative Mass = 23

I think colloids are
heterogeneous
because ____________
___________________​

Answers

the particles do not dissolve completely..

What is the freezing point on this graph?

Answers

Answer:

Point a becuse it is the closest to -5*

Explanation:

Answer:

-5

Explanation:

Negative numbers get you confused.

- = Negative

5 = Number

You know 5 right?

I I I I I - 5

5 is a really less number already.

If you add a negative it will be double small.

Now lets figure out the problem:

What is the freezing point on this graph?

-5 is the smallest number

5 is bigger than -5

15 is bigger than 5 and -5

25 is bigger than all the numbers.

I know what your thinking. 25 is totally not the answer. Its the biggest number. Freezing is a very low number. What number is the lowest out of -5, 5, 15, 25. You see -5.

Therefore, -5 is freezing.

I need help with my chemistry homework

Answers

Speed in excess of 100 km/h, which is 208.8 km / h

Further explanation  

Linear motion consists of 2: constant velocity motion with constant velocity and uniformly accelerated motion with constant acceleration  

• An equation of uniformly accelerated motion  

[tex]\large {\boxed {\bold {x=xo+vo.t+\frac {1} {2} at ^ 2}}}[/tex]

vt = vo + at  

vt² = vo² + 2a (x-xo)  

x = distance on t  

vo / vi = initial speed  

vt / vf = speed on t / final speed  

a = acceleration  

I think it's not chemistry but physics

Known

Δx = 290 m

vf = 0⇒stop

Δt = 10 s

We use the formula in the question

[tex]\tt \Delta x=\dfrac{1}{2}(vf+vi)\Delta t\\\\290=\dfrac{1}{2}(0+vi).10\\\\vi=58~m/s=\boxed{\bold{208.8~km/h}}[/tex]

A glass of milk occupies a volume of 50.0 mL and has a mass of 52.0. what is its density

Answers

Answer: 1.04 is the density.                   Explanation: Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v.    52.0/50.0=


Which element has four times as many protons in its nucleus than are found in Neon?

Answers

Answer:

Zirconium, Zr, 40

Explanation:

Protons can be found by looking at the atomic number. Neon's atomic number is 10, so just multiply 10 by 4 and you get 40.

A dark blue beaker labeled 100 millimeters Y has an arrow leading to a pale blue beaker labeled 99 millimeters H subscript 2 O. This has an arrow leading to a white beaker labeled 99 millimeters H subscript 2 O. Each arrow has a label 1 milliliter over it. The dark blue beaker has a box below it labeled Beaker number 1. The pale blue beaker has a box below it labeled Beaker number 2. The white beaker has a box below it labeled beaker number 3.
Does taking 1 mL of solution Y (pure bleach) out of the first beaker change the solution’s concentration?

What would the concentration of the second beaker be?

If Beaker #2 is a 1% solution of Y, and Beaker #3 is 1/100th of that in the final solution, what percentage solution would Beaker #3 be?

Answers

Answer:

3, 5, 1000

Explanation:

I took the test.

Answer:The first one would be 3

The second is 5

And the last one is 1000

Explanation:

Which of the following d shell configurations is likely to be the best magnet?​

Answers

Answer:

D10 is answer

Explanation:

Magnetism can result from unpaired electrons in a given ion of an element, depending on the spin states of the electrons and d10 is fully filled

The d 10 is the d shell configurations which is most likely to be the best magnet.

What are configurations?

Configurations are defined as the way that parts are joined together to form the computer system. The arrangement of electrons scattered throughout the orbital shells and subshells is depicted by the electron configuration of an atom. Divide the periodic table into pieces to represent the atomic orbitals, the areas where electrons are stored, in order to determine an electron configuration. The s-block is represented by groups one and two, the d-block by groups three through twelve, the p-block by groups thirteen to eighteen, and the f-block by the bottom two rows.

Depending on the spin states of the electrons and whether or not d10 is completely filled, magnetism can emerge from unpaired electrons in a specific ion of an element.

Thus, the d 10 is the d shell configurations which is most likely to be the best magnet.

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

https://brainly.com/question/13410673

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The amount of kinetic energy an object has depends on which feature of the object?

Answers

Answer:

mass

Explanation:

The amount of kinetic energy an object has, depends on its mass and its speed.

Answer: motion

Explanation:

I just took the quiz in edging

Which of these processes are chemical reactions? Type the correct answer in each box.
Boiling an egg
Crushing spices
veges rotting
chopping veges
dew forming

Answers

boiling an egg

hope this helps

Which of the following occurs when a liquid becomes a gas

Answers

Answer:

Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.Boiling occurs when a liquid changes to a gas below its surface as well as at the surface. The temperature at which a liquid boils is called its boiling point. The opposite of vaporization is called condensation. Sublimation occurs when the surface particles of a solid gain enough energy that they form a gas.

Calculate the volume of a rock that has a mass of 24 g and a density of 8 g/mL

Answers

Answer:

24g÷8g/ml=3

volume =3

How many fluorine atoms are present in 6.30 g of C2F4

Answers

Fluorine atoms = 1.517 x 10²³

Further explanation

The mole is the number of particles contained in a substance

1 mol = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

[tex]\large{\boxed{\boxed{\bold{mol=\frac{mass}{molar\:mass}}}}[/tex]

Proust stated the Comparative Law that compounds are formed from elements with the same Mass Comparison so that the compound has a fixed composition of elements

Mass of F

[tex]\tt mass~F=\dfrac{4.Ar~F}{MW~C_2F_4}\times mass~C_2F_4\\\\mass~F=\dfrac{4.19}{100}\times 6.3=4.788~gr[/tex]

mol of F

[tex]\tt =\dfrac{4.788}{19}=0.252[/tex]

number of Fluorine atoms

[tex]\tt 0.252\times 6.02\times 10^{23}=1.517\times 10^{23}[/tex]

what are the strengths and weaknesses of the Mendeleev periodic table?

Answers

Answer:

Advantages:

1. Grouping of elements. He generalized the study of the elements then known to a study of mere 8 groups.

2. Gaps for undiscovered elements. Mendeleev left some gaps in his periodic table. These gaps were left for subsequent inclusion of elements not known at that time. He correctly thought that such elements would be discovered later.

3. Prediction of properties of undiscovered elements. He predicted the properties of then unknown elements om the basis of properties of elements lying adjacent to the vacant slots.

4. Incorrect masses corrected. He was able to correct the values of atomic mass of elements like gold and platinum by placing these elements strictly on the bases of similarities in their properties.

Disadvantages:

1. Anomalous pairs: Argon with atomic mass 39.9 precedes potassium with atomic mass 39.1.

Cobalt with atomic mass 58.9 precedes nickel with atomic mass 58.6.

Tellurium with atomic mass 127.6 precedes iodine with atomic mass 126.9.

2. Position of isotopes: According to Mendeleev's periodic law, isotopes of an element must be given separate places in the periodic table since they have different atomic masses. But they were not assigned separate places.

3.Grouping of chemically dissimilar elements: Elements such as copper and silver bear no resemblance to alkali metals but they have placed in separate groups.

4.Separation of chemically similar elements: Elements that are chemically similar, such as gold and platinum have been placed in separate groups.

5.Electron arrangement: It does not explain the electron arrangement of elements.

6. Position of Hydrogen: It was not given in a fixed position.Explanation:

The Mendeleev periodic table has strengths in its predictive power, organization of elements, and observation of periodic trends. However, it has weaknesses in incomplete representation, limited understanding of atomic structure, and challenges in placing rare earth elements.

The Mendeleev periodic table, developed by Dmitri Mendeleev in the 19th century, laid the foundation for the modern periodic table. It has several strengths and weaknesses, which are outlined below:

Strengths of the Mendeleev periodic table:

Predictive Power: One of the major strengths of the Mendeleev periodic table is its ability to predict the existence and properties of yet-to-be-discovered elements. Mendeleev left gaps in the periodic table, accurately predicting the properties of elements that were later discovered and filled in those positions.

Periodic Trends: The Mendeleev periodic table organizes elements in a way that allows for the observation of periodic trends. Elements within the same group (vertical column) exhibit similar chemical properties and have similar valence electron configurations. This periodicity helps in understanding the behavior and reactivity of elements.

Classification of Elements: The Mendeleev periodic table classifies elements based on their atomic number and chemical properties. It provides a systematic arrangement of elements, allowing scientists to organize and study them more efficiently.

Weaknesses of the Mendeleev periodic table:

Incomplete Representation: The Mendeleev periodic table, when initially proposed, had gaps for undiscovered elements. While Mendeleev made accurate predictions, some of the gaps were filled in later with elements that did not necessarily match the properties initially predicted. This incomplete representation can be seen as a weakness.

Limited Understanding of Atomic Structure: At the time of Mendeleev's development of the periodic table, the understanding of atomic structure was incomplete. The periodic table was based on elemental properties without the knowledge of atomic numbers or the electron configuration of elements. This limitation hindered the ability to explain certain observed trends and properties accurately.

Lack of Internal Structure: The Mendeleev periodic table did not provide a detailed understanding of the internal structure of atoms or the arrangement of electrons in energy levels. It primarily focused on organizing elements based on their chemical properties and atomic weights, lacking the underlying atomic structure information.

Rare Earth Element Placement: Mendeleev faced challenges in placing the rare earth elements in the periodic table. Initially, he grouped them together as a separate series, but later refinements led to the placement of the rare earth elements within the main body of the table. The difficulty in organizing these elements reflects a weakness in the early understanding of their properties and arrangement.

Learn more about Mendeleev periodic table from the link given below.

https://brainly.com/question/11974961

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Match each label below with the appropriate term. Note: there may be more than one correct answer.

nonbonding electrons
sigma bond
represents two electrons

Answers

Answer: sigma bond

Represents two electrons

Explanation:

E2020

Answer:

Sigma Bond AND Represents two electrons.

Explanation:

How do homes lose thermal energy?
I need TWO reasons on why we want to reduce the thermal loose.​

Answers

Answer:

Poorly insulated attics, windows not being insulated in the winter

Explanation:

One reason is so we do not get cold in the winter and the reason we have a home is to protect us from the weather or put a shelter above us. Second reason is so we don't get hypothermia in the winter time.

Which sublevel comes after 4d orbital

Answers

Answer:

5s

Explanation:

The 4d sublevel is filled next, after the 5s sublevel.

Complete the sentence.

Atoms form chemical bonds to satisfy the
rule and to become

Answers

Answer:

Whats the sentence

Explanation:

Answer:

Atoms form chemical bonds to satisfy the octet rule and to become stable.

Got it right on Edg. 2020, hope this helps!

According to Bohr, why don't the electrons fly off into space?

Answers

Bbbbbbbbbbbbbbbbbbbbbbbbbbbbb

Answer:

because Electrons are not little balls that can fly

Explanation:

What do these two changes have in common?
using a large magnet to remove pieces of iron from a junkyard
rain forming in a cloud
Select all that apply.
Both are caused by heating.
Both are only physical changes.
Both conserve mass.
Both are chemical changes.

Answers

Answer: Both are only physical changes.

Explanation:

Both are only physical changes.  

• The material, which takes part in the change is structurally similar after and before the change is known as the physical change.  

• The cloud formation is a physical change as when evaporation of water takes place  it goes into the air and produces cloud by the process of condensation. The same water goes back to earth by the process of precipitation and this get repeated again and again.  

• A chemical change takes place when formation of new substance takes place by combining two substances. In the case, when a magnet picks up iron in a junkyard, one is still having an iron and a magnet, no formation of substance is taking place. So it is a physical change.  

Thus, both the given processes are examples of only physical changes.

To know more about:

https://brainly.com/question/14587795

3. Students were measuring distances and found one to be 2.04 m. When they asked the teacher if their measurement was correct, the teacher said, “Actually, it is 2.16 m.” What is the percent error?

Answers

Answer:

5.56

Explanation:

What is the main point of mutation ?
quick please !!

Answers

Answer: type of mutation that causes the replacement of a single base nucleotide with another nucleotide of the genetic material, DNA or RNA. The term point mutation also includes insertions or deletions of a single base pair.

Explanation:

Answer:

Mutation is important as the first step of evolution because it creates a new DNA sequence for a particular gene, creating a new allele.  

Explanation:

Mutations put new DNA combinations into a population

The metric unit of force is the Newton (N) , which is kg⋅m/s2 .
Convert 10 kg⋅cm/s2 to Newtons.

OPTIONS:
A. 1×10−1 N
B. 1×10−2 N
C. 1×10−5 N
D. 1×10−6 N

Answers

Answer:

1×10^-1 N

I took the quiz

Answer:

A

Explanation:

I just took the test.

find the oxidation number of carbon in MgCO3​

Answers

Answer: +2

Explanation: Formula of oxide is MgO, because oxidation state of Mg in MgCO3 is +2.

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