ANSWER PLEASE ..Which property of an element would be MOST helpful in determining its column in
the periodic table?

Answers

Answer 1
Im not sure but I recommend taking a look at the periodic table
Answer 2

The column number of an element in the periodic table is generally determined on the basis of the number of valence electrons. The elements in the same column have similar chemical properties.

What are valence electrons?

The electrons present in the outermost shell of an atom which take part in chemical reactions are called the valence electrons. These electrons are responsible for the interaction between the atoms and the formation of chemical bonds.

The valence electrons of an atom also gives us an idea about the chemical properties of elements like valency, the number of unpaired electrons present, etc. The column number of an element is mainly determined on the basis of number of valence electrons.

The elements are placed in vertical columns in the periodic table. There are 2 electrons in the outermost shell of Alkaline earth metals. So they belong to second column.

Thus it is the valence electron which determines the column number.

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Related Questions

which branch of science studies non-living things?

Answers

Answer: The branch of science you are referring to is Physical Science.

Answer:

physical science

Explanation:

Physical science is a branch of natural science that studies non-living systems, in contrast to life science.

А
B
с
578 g
343 9
722 g
which is more dense?

Answers

Answer:

can you rephrase the question it is hard to understand

If a substance has a mass of 12.50 g and takes up 3.4 mL of space, what is the density?

Answers

Answer:

The answer is

3.68 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} [/tex]

From the question

mass of substance = 12.50 g

volume = 3.4 mL

The density of the substance is

[tex]density = \frac{12.50}{3.4} \\ = 3.676470588...[/tex]

We have the final answer as

3.68 g/mL

Hope this helps you

Which of the following example(s) from everyday life are made possible by modern chemistry?

If you could help me out I would really appreciate it. Thank you!

Answers

Answer:

I believe it is c

Explanation:

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

From everyday life the following have been made possible by modern chemistry:

b. wearing a synthetic spandex athletic shirt

c. taking a pill to get relief from a cold

d. getting a boost of energy by eating an apple

Modern chemistry is a branch of chemistry that deals with the identification of structure, composition, physical as well as chemical properties of the substances that can help modern day humans to deal with their day to day problems like poor health, meeting energy requirements and others. Spandex is a material that has a chemical nature of absorbing the sweat from the body of athlete so this can be a part of modern chemistry. The chemical formulation of pill will help in fighting with the cold causing infecting agent in the body so it will help in overcoming the ill effects of cold thus helping mankind, so it is the part of modern chemistry. Apple is a source of sugar when it is metabolically broken in the body it releases energy which can be utilized by the body as a source of energy so it is a part of modern chemistry. Observing the sky at night during campaign is a physical phenomena.

Hence, use of spandex in athletics shirt, pill for overcoming cold and apple as source of energy are parts of modern chemistry.

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Which atom has a configuration that ends in 5s 2?

Answers

Answer:  Zirconium [Kr]4d :)

Explanation:

help me slove this question
which places have more kinetic energy than potential energy ​

Answers

Answer:

usually at a higher place or height as in at the highest point on a roller coaster.

Explanation:

Calculate the number of moles for 12.044*10^23 number of helium atoms

Answers

Answer:

Explanation:

number of moles=number of particle (atoms)/avogadro number (NA)

we know that avogadro number is equal to 6.23*10^23

given number of atoms=12.044*10^23

therefore

moles=12.044*10^23/6.23*10^23=1.9=2

You have 150 g of water (m). The specific heat of the water is 4.184 g/jC (c) . You heat the water and raise the temperature by 1 degree. How much heat did the water absorb?

Answers

Answer:

627.6J

Explanation:

q=mcΔT

where:

q = heat energy (J)

m = mass (g)

c = specific heat (g/j*C)

Δt = change in temperature (C/K)

q= (150)(4.184)(1) = 627.6

CONCLUS Your conclusion will include a summary of the lab results and an interpretalion of the results. Please answer al questions in complele sentences using your own words Using two to three sentences, summarize what you investigated and observed in this lab What I observed in this lab was what materials to use for different things. I also learned how to make things sturdier. 2 What building malerial did you use to build your house? My house is made.autof brick and/or clay brick and wood. 3 Did your results support or fail to support your hypotheses? Type Here IN 4 What were the densities of the malerials you chose for the was ond floor for the home in Thy Worlar Type Here Why do you think a building material's density is important when building homes or architectural structures? Type Here Why wouldn't you choose wood or aluminium for the lalches on your house? Type Here Help Improve Office Notes​

Answers

Answer:

Here’s the answer

Explanation:

what does the chemical formula Ba(HCO3)2 tell us about number of atoms of each element present​

Answers

Answer: The chemical formula is Ch(HCO3)2 and Cn(HO3)2

Explanation:

There is 1 atom of Ba, 2 atoms of hydrogen, 2 atoms of carbon, and 6 atoms of oxygen.

What are molecules?

The smallest particle of a substance has all of the physical and chemical properties of that substance.

The chemical formula Ba(HCO3)2 tells us about the number of atoms of each element present​ as follows:

1 atom of Ba

2 atoms of hydrogen

2 atoms of carbon

6 atoms of oxygen.

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trial 2, 2.68 g/cm/3 trial 3, 2.84g/cm/3. aluminum has a density of 2.70g/cm/3 calcute the percent error for each trial.

Answers

Answer:

trial 2: 0.74

trial 3: 5.19

I think but the equation for sloving percent error is:

(true value - determined value)/true value * 100

Explanation:

Plsss helpppp pls fast :(

Answers

Answer:

valance electrons are located in the outermost shell/ outermost energy levels. it determines how they will react their reactivity.

what happens during covalent bonding? ​

Answers

Answer:

The atoms share some of their outer electrons so that each atom has a stable noble gas arrangement.

Explanation:

Wood has a density of 0.531 g/cm3. What is the volume of 44 grams of wood?

Answers

Answer:

The answer is 82.86 cm³

Explanation:

The volume of a substance when given the density and mass can be found by using the formula

[tex]volume = \frac{mass}{density} \\ [/tex]

From the question

mass of wood = 44 g

density = 0.531 g/cm³

It's volume is

[tex]volume = \frac{44}{0.531} \\ = 82.86252354...[/tex]

We have the final answer as

82.86 cm³

Hope this helps you

what is the name of that equipment she is using​

Answers

Answer:

picture?

Explanation:


Consider a sealed glass bottle. If the bottle is thrown into a fire, what will happen to the bottle and why? Which law is the best explanation?

Answers

Answer:

Charles' Law

Explanation:

If a sealed container of gas were placed in a fire, the temperature and pressure of the gas would increase until the container broke or exploded. ... to volume when temperature is constant.

In the case when the bottle should be thrown into the fire so here Charles' Law should be applied.

What is  Charles' Law?

Charles's law is a statement where the volume should be occupied by a fixed amount of gas that should be directly proportional to its absolute temperature in the case when the pressure remains constant.

Since in the case when the sealed container of gas should be placed in the fire so here the temperature and the pressure should be increased till the break of the container.

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A student is measuring the volumes of nectar produced by a flowering plant for an experiment. He measures nectar from 50 flowers using a graduated cylinder that measures to the nearest millilitre (mL). Which statement describes a change that can help improve the results of his experiment?
A.) His measurements will be more precise if he takes measurements from an additional 100 flowers. B.) His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. C.) His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL. D.) His measurements will be more accurate if he takes measurements from an additional 100 flowers.
NEED HELP NOW PLEASE!!!

Answers

Answer:

His measurements will be more precise if he uses a graduated cylinder that measures to the nearest tenth of a mL.

Explanation:

His measurements will be more accurate if he uses a graduated cylinder that measures to the nearest tenth of a mL. The correct option is B.

The closeness of a measurement to the real or recognised value is referred to as accuracy.

The learner can achieve more exact measurements and eliminate the possibility of rounding mistakes by using a graduated cylinder that measures to the closest tenth of a millilitre.

This enhanced precision will help to improve measurement accuracy. Taking measurements from more flowers (options A and D) will expand the sample size but will not enhance accuracy unless the measuring device is updated.

Option C recommends improving precision but does not address accuracy.

Thus, the correct option is B.

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If 5.0 g of copper cools from 35.0oC to 22.6 oC and loses 23.6 J of heat, what is the specific heat of copper? a. 0.038 J/(g. oC) b. 0.62 J/(g. oC) c. 0.076 J/(g. oC) d. 0.38 J/(g. oC)

Answers

Answer:

c = 0.38 J/(g-°C)

Explanation:

Given that,

Mass of copper, m = 5 g

Initial temperature, [tex]T_i=35^{\circ} C[/tex]

Final temperature, [tex]T_f=22.6^{\circ} C[/tex]

When copper cools, it looses 23.6 J of heat. We need to find the specific heat of copper. The heat lost is given by :

[tex]Q=mc\Delta T[/tex]

c is specific heat

[tex]c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{23.6}{5\times (22.6-35)}\\\\c=0.38\ J/g-^{\circ} C[/tex]

Hence, the correct option is d.

Where light is hitting an object

Answers

When lights hits an object, the light either get absorbed, reflected or refracted

The phrase "where light is hitting an object" refers to the specific points or areas on the surface of an object that are directly exposed to light.

These are the regions where photons from a light source directly interact with the object's surface.

When light hits an object, it can be absorbed, reflected, or transmitted depending on the object's properties. The areas where light is hitting will typically appear brighter or illuminated, while the areas in shadow or not directly exposed to light will appear darker.

The distribution of light hitting an object plays a crucial role in determining its visibility, color, and overall appearance.

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1.
What is the chemical symbol for silver?

Answers

Answer:

Explanation:

Ag

pretty sure it’s “ag” :)

Question 4 (4 points)
(01.06 LC)
Water is an example of a mixture because it is made up of hydrogen and oxygen atoms bonded together. (4 points)
O True
O False

Answers

Answer:

False

Explanation:

The mixture is defined as a chemical substance formed by the combination of two or more substance but do not form any bond together.

Water is not a mixture because the water molecule is consists of two hydrogen (H2) atoms and one oxygen (O) atom bonded together with hydrogen bonds.

Hence, the given statement is "false".

What is the specific heat of a substance that absorbs 228 joules of heat when a sample of 706 g of the substance increases in tempature from 26.0 c to 88.8 c

Answers

Answer:

[tex]c=5.14\ J/kg ^{\circ} C[/tex]

Explanation:

Given that,

Heat absorbed by a sample, Q = 228 J

Mass of a sample, m = 706 g = 0.706 kg

Initial temperature is 26 °C and final temperature is 88.8°C

We need to find the heat absorbed by the sample. The heat absorbed by an object is given by :

[tex]Q=mc\Delta T\\\\\text{Where c is specific heat of sample}\\\\c=\dfrac{Q}{m\Delta T}\\\\c=\dfrac{228\ J}{0.706\ kg(88.8-26)^{\circ} C}\\\\c=5.14\ J/kg ^{\circ} C[/tex]

So, the specific heat of the sample is [tex]5.14\ J/kg ^{\circ} C[/tex].

Is copper penny react
reaction with Nitric
acid a
Chemical or physical
Change?

Answers

Answer:

The reaction that occurs is a redox reaction. The Copper metal (Cu 0)on the copper pennies is oxidized in concentrated nitric acid to produce Cu2+ ions. Copper is easily oxidized to Cu2+, which is blue in aqueous solutions (water) so you should see the solution turn blue as the copper penny reacts.

Have a nice day ;)(^-^)

Taking into account the definition of chemical and physical change, the reaction of the copper penny with nitric acid is a chemical change.

Physical change

Physical changes are those in which the substances involved are the same before and after the change. That is, a physical change is a transformation in which the nature of matter does not change.

Chemical change

Chemical changes are considered to be those in which the substances involved are transformed into totally different ones.

In this way, the initial substances do not exist after the phenomenon has occurred and instead, new substances are formed, different from the initial ones.

That is, a chemical change is a transformation in which the nature of matter varies.

This case

When a penny of copper reacts with nitric acid, a redox reaction occurs where the copper metal in the copper pennies is oxidized to produce Cu²⁺ ions, whereas because the nitric acid oxidizes the copper, the nitric acid itself is reduced to nitric oxide (NO). Nitric oxide then reacts with oxygen in the air to produce nitrogen dioxide (NO₂). This can be represented by:

Cu + 4 HNO₃ → Cu²⁺(ac) + 2 NO₃⁻  + 2 NO₂ + 2 H₂O

Finally,  the reaction of the copper penny with nitric acid is a chemical change because a redox reaction occurs.

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I need help with problems 11-13 please. I’m very confused on how to find Volume when there’s no specific shapes and numbers.

Answers

Answer:

To find volume you can either look at the displacement of the water or Length•Width•Height

Explanation:

11) 12

12) 340 mL

13) 196 m\

PLEASE HELP ME QUICK
When an iron nail is ground into powder, its mass ____.
a. stays the same
b. decreases
c. increases
d. cannot be determined

When paper turns yellow-brown upon exposure to sunlight, what type of change is likely taking place?

a. a physical change
b. a chemical change
c. neither a physical change nor a chemical change
d. both a physical change and a chemical change

Answers

Answer:

1.It stays the same

Explanation:

because its only the natural stature of it has changed

(01.04 MC)
Describe two distinct ways in which the skin could help cool the body on a hot day. (5 points

Answers

i turned in this exact assignment today haha

the blood vessels dilate to draw body heat away from the body and towards the surface of the skin
sweat glands release sweat, when sweat evaporates it releases heat

Which mineral is found in almost every type of rock?

Answers

Answer:

Olivine

Explanation:

Hope this helps! :) x

What characteristic of an epic hero does this passage
show?
the ability to embark on a long journey
the ability to receive help from a supernatural force
the ability to speak with confidence

Answers

The ability to speak with confidence shows the characteristic of an epic hero does this passage show. Option C is correct.

What is confidence?

The  feeling  or emotion or belief that one or a person  can have faith in or trust on someone or for something that he or she is doing or about to do and the hero are the inspiration for the society.

In other words a feeling or emotion  of self-assurance or self believe  arising or rises  from an appreciation or motivation of one's own abilities or qualities or performance.

Therefore, ability to speak with confidence shows the characteristic of an epic hero does this passage show. Option C is correct.

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Answer:

B

Explanation:

Cuz

Which of the following is an example of an intensive physical property?
a. boiling point
b. height
c. volume
d. none of the above is an example of intensive properties
e. all of the above are examples of intensive properties

Answers

I think It’s A and C

Answer:

boiling point is an intensive property because it stays the same no matter the amount of an element or molecule

Explanation:

what happened to the color of the sand when it goes through filtration and is quantitative or qualitative

Answers

Answer:

Qualitative

Explanation:

I'm not sure if there was another part to the question, but if you are looking at the color of the sand, that is a qualitative observation.

Quantitative statements involve numbers. (Ex: The house has 4 bedrooms.) Qualitative statements describe characteristics. (Ex: The house is blue.)
Other Questions
While location is about how to find something, ___ is about ___ Rewrite 8 3/4 as an improper fraction.A. 35/4 B. 28/3 C.35/8D.32/4 Which term represents 0 latitude? North Pole international date line equator prime meridian 2. Is the Voynich manuscript written in some kind of code? (D2+6d+9)+(d3-6d+9) Simplify: 6 (4x - 5) Seth, Pete, Cara, and Jen form Kingfisher Corporation with the following consideration:Consideration Transferred Basis to Transferor Fair Market Value Number of Shares IssuedFrom SethInventory $30,000 $96,000 30*From PeteEquipment ($30,000 of depreciation taken by Pete in prior years)45,000 99,000 30**From CaraProprietary process 15,000 90,000 30From JenCash 30,000 30,000 10*Seth receives $6,000 in cash in addition to the 30 shares.**Pete receives $9,000 in cash in addition to the 30 shares.a. Seths recognized gain or loss. Identify the nature of any such gain or loss.b. Seths basis in the Kingfisher Corporation stock.c. Kingfisher Corporations basis in the inventory.d. Petes recognized gain or loss. Identify the nature of any such gain or loss.e. Petes basis in the Kingfisher Corporation stock.f. Kingfisher Corporations basis in the equipment.g. Caras recognized gain or loss.h. Caras basis in the Kingfisher Corporation stock.i. Kingfisher Corporations basis in the proprietary process.j. Jens recognized gain or loss.k. Jens basis in the Kingfisher stock. 6*10^-2 is how many times as large as 2*10^-8 10. Write and equivalent expression for theexpression 4-4. 2. Elements in the same group have similar properties because they have O the same number of protons O the same number of valence electrons O the same number of energy levels with electrons O the same total number of electrons please help!! Two sides of a triangle, a and b, have lengths 1 in Jackie is often surprised when she goes to other countries to learn that people do business so differently. For instance, in meetings Jackie is used to getting straight to the point and addressing any relevant issues. However, she has learned that in many countries businesspeople take the time to first make small talk and ask about the family before finally getting down to business. To Jackie this seems to make the meetings unnecessarily long and wastes valuable time. These cultural differences seem strange to Jackie because she is relying on her:________ a. self-reference principle b. international bias c. self-reference criterion d. cultural relativism e. ethical perspectives Sex chromosome disorders are often not recognized until A coordinate plane with a line passing through (negative 3, 2) and (0, 3) Find the linear function represented by the graph. The slope of the line is . The y-intercept of the line is at . What linear function is represented by the graph? What is a unit rate? Use context clues to determine the meaning of the underlined words in this passage ? Question Read the sentence. If Steve had taken part in the swimming competition, he would have won the gold medal. Why does the sentence use conditional mood? 1. to show a possibility of Steve winning the gold medal, 2. to state a fact about Steve's luck at winning a swimming competition, 3. to question Steve's ability of winning the swimming competition, 4. to command Steve to participate and win the gold medal Explain the role that gravitation played in the formation of the Moon after the large planetesimal hit Earth. what are the earliest invention in human history Darron loves his career because it mostly fits in with his lifestyle. He likes how he is able to make a lot of money and stay very busy while at work. He also likes that he travels a lot and gets to see new places. He thinks that one of the reasons he is successful is that he enjoys the competition in his career that some people would find stressful. However, he wishes he had more time at home with his family. Which aspect of Darrons career matches his lifestyle but is also in conflict with some of his desires?