Which of the following statement(s) are true about the atoms of any element?
a) The number of protons in an atom of an element is unique to each element.
b) The number of protons and neutrons in an atom of an element is unique to each element
c) A proton in an atom of one element is identical to a proton in an atom of another element.
d) The number of protons in an atom of an element is the same for all elements.

Answers

Answer 1

Answer:

C

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Related Questions

When a substance freezes, it changes from the liquid phase to the solid phase because of its _____.

intermolecular bonding
ability to fit the shape of its container
compactness
molecular bonding

Answers

Answer:

intermolecular bonding

Explanation:

You have decided that you want to make ice cubes. You put them in the freezer and they become solid at 32°F. What
temperature will the ice cubes melt?
32°F
100°F
OF
It's impossible to tell.

Answers

lago claro todo esta lleno de basura

Answer:

I think its about the same tempurature so i would say 32 degrees

Explanation:

Notice that the curve shows periods where the temperature does not change. These plateaus occur because energy is being used to changing the substance's phase, not raise the temperature. This is why water will not get hotter as it is boiling.

Please help me with this question.

Answers

Answer:

12?

Explanation:

Answer:

8

Explanation:

haploid is half

Which shell is the outermost for oxygen?
A 192
B. 292
C. 252P
D. 2P

Answers

Answer:

D is the answer

(a) Convert the following:
50 cm into m

Answers

Answer:

0.5m

Explanation:

Which graph best shows an inverse relationship?

Answers

Answer:

b

Explanation:

just got done with this one

It’s b!!!!!!!!!!!!!!!!

An ionic bond for calcium and oxygen is CaO. If an oxygen ion has a charge of two negative, what is the charge for calcium? +2 –1 +1 –2

Answers

Answer:

+2

Explanation:

Convert 35 mL to cm3. 1 mL = 1 cm3

Answers

it’s still 35cm3
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What is a carcinogen? a. a toxin linked to an increased risk of cancer b. a non-carbon based chemical c. a type of pollution that can be traced to a specific source d. a type of pollution that cannot be traced to a specific source

Answers

Answer:

Explanation:

a i think

Answer:

it would (a)

Explanation:

carcinogen is a substance that gives your tissues a higher chance of getting cancer

HELP ME WITH THIS QUESTION PLEASE
ASAP

When a cup is placed on a table, which force prevents the cup from falling to the ground?


A gravitational force

B.


normal force
с.

resistance force
D.

tension force

Answers

Answer:

B. normal force

Explanation:

When a cup is placed on a table, the forces acting on the cup are the gravitational force and the normal force. The gravitational force acts in the downward direction while the normal force acts in an upward direction. It is clear that the gravitational force is balanced by the normal force. So, the correct option is (b) " normal force ".

How many significant figures are in 320001

Answers

there are 6. looked it up

A cylinder with 10 mL of coconut oil has a mass of 9.3 g. What is the density of the oil? Round to the nearest hundredth. ​

Answers

Answer:

0.93 grams per milliliter

Explanation:

Density is the division of mass by volume. It is how "hefty" an object is; for example, wood isn't very "hefty" but metal is. The density is measured in mass over volume, so it is 9.3/10. After applying units, it is 0.93 grams per milliliter.

hello :) for qn 3 , I got 0.01 mol but I’m not sure if it’s correct :/ I need help , thanks!

Answers

Answer:

0.05 dm³

Explanation:

Please see the attached picture for full solution.

The question is asking for the volume of H₂SO₄, so we need to find the number of moles of KOH then the number of moles of H₂SO₄. (Using mole ratio from the balanced equation) Also, potassium hydroxide is KOH not K₂SO₄ :)

How does quantitative data apply to the scientific method?

Answers

Quantitative data measures the aspect in the real world in quantifiable terms, numbers. Qualitative data observes the qualities of natural phenomena such as opinions and motivations.

HELP QUICK ILL GIVE YOU BRAINLIEST AND 25 POINTS! bromine (br) has four energy levels. name 2 other elements that would have four energy levels.

Answers

Answer:

titanium and potassium

Explanation:

Answer: geranium and krypton

Explanation: hope this helps

2. You water three sunflower plants with salt water. Each plant receives a different

concentration of salt solutions. A fourth plant receives pure water. After a

two-week period, the height is measured.

IV

I

DV

CG

Answers

Answer:

Independent variable, is the amount of salt water received by each plant

Dependent variable, is the height of each plant

Control group, is the fourth plant that received pure water.

Note: The question is incomplete. The complete question is as follows: For the following experiments, define the independent variable (IV), dependent variable (DV) and control group (CG).

2. You water three sunflower plants with salt water. Each plant receives a different concentration of salt solutions. A fourth plant receives pure water. After a two-week period, the height is measured.

Explanation:

Independent variable: An independent variable is a variable that an experimenter changes or controls and which has a direct effect on the dependent variable.

In the experiment above, the independent variable is the amount of salt water received by each plant because it is under the control of the experimenter and also is thought to have a direct effect on the height of plants.

Dependent variable: A dependent variable is a variable that is being measured or studied in an experiment, and it depends on the independent variable for its results.

The height of the plants is the dependent variable as it depends on the amount of salt water the plant receives.

Control group: The control group is the group in an experiment or study that does not receive the treatment as the other groups being studied and as such, is not influenced by the independent variable. Therefore, it is used as a standard for the other groups under study.

In this experiment, the control group is the fourth plant that received pure water.

why matter looks and feels different depending on the object

Answers

This is because the object has different textures which makes it feel and look different.

Answer:

because the volume

Explanation:

Who wrote the first modern chemical textbook?
O Antoine Lavoisier
O Dmitri Mendeleev
O Henry Moseley
O Johann Dobereiner

Answers

Answer:

Antoine Lavoisier

Explanation:

Antoine Lavoisier wrote the first modern textbook. It is the answer.

The modern chemical textbook was written by Antoine Lavoisier. The book is titled as Elementary Treaties On Chemistry.

Who is Antoine Lavoisier?

Antoine Lavoisier is known as the father of modern chemistry. He contributed a lot to revolutionize chemistry. Antoine Lavoisier proposed the law of conservation of mass.

Nomenclature of chemical compounds was proposed by Antoine Lavoisier. He studied about the combustion and respiration in detail and the results are written in the book Elementary Treaties On Chemistry.

Hence, the first modern chemical textbook was written by Antoine Lavoisier.

To learn more about Antoine Lavoisier, refer the link here,

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Express the following in regular notation:
3.4 x 10-1

A)O 34
B)O 0.34
C)0 3.4
D)0.00034

Answers

A because if you multiple it, you will be moving the decimal one time

ii What is the state of matter just before a substance melts?

Answers

Explanation:

Before melting,Substance are in Solid state.

The MSDS for benzene indicates that it is a clear liquid that has a substantial vapor pressure. It has a health rating of
2, a fire rating of 3, and a reactivity rating of 0. It is a cancer-causing agent.
Based on this information, which siatement about benzene is accurate?
Benzene readily reacts with moist air.
Benzene explodes if the container is shaken.
Benzene must be kept away from flames.
Benzene must be stored under high pressure.

Answers

Based on the provided information, the statement that is accurate about benzene is that it must be kept away from flames. This is because benzene has a high flammability rating of 3, which indicates that it can ignite and burn easily.

Additionally, the MSDS states that benzene has a substantial vapor pressure, which means it can easily evaporate into the air and form flammable mixtures with air.

The other statements are not accurate. Benzene does not readily react with moist air or explode if the container is shaken. It also does not need to be stored under high pressure. However, benzene is a cancer-causing agent, so it is important to handle it with care and follow proper safety precautions.

For more question on benzene click on

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Coyotes and oak trees are unicellular organisms?

Answers

Answer :

Multicellular organisms

Explanation :

Coyotes are multicellular organisms.

Trees are multicellular organisms. They are made up of eukaryotic cells, which are complex cells full of organelles.

Coyotes and oak trees are not unicellular organisms but are multicellular organisms.

Unicellular organisms are living organisms that consist of only one cell. These organisms are complete and functional in their single-cell structure, carrying out all essential life processes, such as respiration, nutrition, reproduction, and growth, within that one cell. Examples of unicellular organisms include bacteria, archaea, protozoa, certain algae, and some fungi.

Coyotes and oak trees are multicellular organisms made up of many cells. Coyotes are mammals, and oak trees are plants, both of which are complex organisms with specialized tissues and organs. In contrast, unicellular organisms, such as bacteria and protists, carry out all life processes within a single cell.

Learn more about Unicellular organisms, here:

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two ways
2 Describe two ways in which sodium chloride is different from chlorine. (for 7th graders)

Answers

Salt be pool cleaner, end of story

• An element is shiny, brittle, and a poor conductor of electricity.
Which of the following is the best classification for the element?

Answers

I don’t see the complete question

what is The chemistry of living things and living systems created a new
combined field in science

Answers

Answer:

The answer is biochemistry

Explanation:

Biochemistry is a field of science that studies the chemistry and chemical processes involved in a living system. These chemical processes include glycolysis, gluconeogenesis, citric acid cycle, pentose phosphate pathway among others. Biochemistry studies the relatedness of these processes, the importance of these processes and how these processes can or cannot be regulated.

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.

Sir Isaac Newton developed a law that describes the gravity between bodies of matter called _________________________________.

Answers

Answer:

Universal law of gravitation

How many years are in 72,000 sec?

Answers

Answer:

72000 seconds equals 20 hours.

Explanation:

Block A has a mass of 5g and a volume of 15mL. What is the density of block A? Will it float in water (density of water is 1.0 g/mL) Don't forget the units!! PLSSSS PLSSS PLSSS HELP I WILL MARK BRAINLIEST AND HELP WITH UR QUESTIONS I PROMISE!!!!

Answers

Explanation:

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

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

From the question

mass of block = 5 g

volume = 15 mL

The density of the block is

[tex]density = \frac{5}{15} = \frac{1}{3} \\ = 0.33333333...[/tex]

We have the final answer as

0.33 g/mL

The block will float on water since it's density is less than that of water which is 1 g/mL

Hope this helps you

Please help! If a forensic chemist discovers evidence through examination which would prove a person guilty of a crime, why then might this person not be convicted?

Answers

Explanation: You cannot be convicted of a crime without evidence. You cannot be convicted of a state crime. You cannot be convicted of a federal crime. If there is no evidence against you, under the law, it simply is not possible for the prosecutor's office to obtain a conviction at trial. So, when you do have evidence it is really impossible to not get convicted unless the judge truly believes your side of the story and declares you not guilty.

I hope this helped :) If not i'm sorry!

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Please solve need help! Look at the incomplete multiplication problem below. 632x28 5600 +[?] What value is missing? A)11,376 B)12,540 C)12.640 D)18,328 The US is ____ of Mexico What is the value of y in the solution to the following system of equations?5x 3y = -112x - 5y = -14 can anyone help me with the answer above? brainlist if you end up being correct The average of four numbers is 26.Three of these numbers are 20, 42and 16. What is the fourth number? 6. What contributions did he monks and Nuns make to Medieval Europe?Posted Thu Sep 10, 2020 at 1:38 pm Simplify:6(1 + 6x) At 9:12am Flight 77 is hijacked. Predict what will happen next. What created conflict between colonial governorsand colonial representative assemblies? A square has a side length 9 cm.What is its area? Are angles 1 and 2 a linear pair? Yes or no. 5Select the correct answer.if(t + 4) is a factor of polynomial p, which statement must be true?OA. p(4)0B. p(4) < 0OC. P(-4) = 0OD. p(-4) > 0Whats the answer Plz answer me will mark as brainliest plz answer full 5) Settlers were required to find a way to make a ____ for the investors. how did life change after the fall of Rome during the early Middle Ages? A DNA segment is changed from GTCACGATT to GTCAACGATT. This is an example of which type of mutation?Insertion mutationDeletion mutationPoint mutationSubstitution mutation After the Monkey King returns from the five pillars of gold, what evidencedoes Tze-Yo-Tzuh have in his hand to prove that the Monkey King was alwayswithin his reach?A. The Monkey King's cudgelB. The Monkey King's nameC. The Monkey King's hairD. The Monkey King's shoe PLEASE HELP!!! I WILL GIVE BRAINLIEST AND 100 POINTS Someone please help me!!!