What characteristic of an element’s atoms always determines the element’s identity?

Answers

Answer 1

Answer:

Number of protons

Explanation:

There are three sub atomic particles. These are;

- Protons

- Electrons

- Neutrons

Among these three particles, only one determines the identity of the element. This is the Protons. The number of protons which is also called the atomic number determines the identity of an element. For instance, atom with one proton is Hydrogen and n other element can have atomic number of one.


Related Questions

How many grams are present in 2.5 moles of silicon

Answers

Answer:

70.21375

Explanation:

rounded to he nearest tenth place 70.2

2. Based on what you know about waves and light, do you think that light can be
modeled as a wave? Explain why or why not.

Answers

Answer:

Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.

Explanation:

Hope this helps

Answer:

Light as a wave: Light can be described (modeled) as an electromagnetic wave. In this model, a changing electric field creates a changing magnetic field. This changing magnetic field then creates a changing electric field and BOOM - you have light. ... So, Maxwell's equations do say that light is a wave.

Explanation:

Credit for 2021FOLLOWme

How many grams of NH3 are needed to make 2.50 moles of (NH4)2SO4?
2 NH3(g) + H2SO4(aq) --> (NH4)2SO4(aq)

Answers

Answer:

85.155g NH3

Explanation:


Plants use sunlight as energy to convert carbon dioxide and water into glucose and oxygen. Which best describes
the reaction?
The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the
products
O The law of conservation of energy indicates the same amount of carbon will be found in the reactants as in the
products
The law of conservation of mass indicates the same amount of glucose will be found in the reactants as in the
products
O The law of conservation of energy indicates the same amount of glucose will be found in the reactants as in the
products

Answers

Answer:

The law of conservation of mass indicates the same amount of carbon will be found in the reactants as in the  products

Explanation:

The reaction between carbon dioxide and water in the presence of sunlight to produce glucose and water strictly follows the law of conservation of mass.

Let us give the reaction expression:

        6CO₂   +   6H₂O   →   C₆H₁₂O₆   +    6O₂

According to the law of conservation of mass, matter is neither created nor destroyed but new compounds are formed during a chemical reaction.

From the given reaction expression, we can clearly see that 6 moles of carbon on the reactant side will produce 6 moles of carbon on the product side.

Therefore, the law obeys the law of conservation of mass.

A 475 cm3 sample of gas at standard temperature and pressure is allowed to expand until it occupies a
volume of 600. cm3. What temperature would be needed to return the gas to standard pressure?

Answers

The final temperature : 345 K

Further explanation

Given

475 cm³ initial volume

600 cm³ final volume

Required

The final temperature

Solution

At standard temperature and pressure , T = 273 K and 1 atm

Charles's Law  :

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

[tex]\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Input the value :

T₂=(V₂T₁)/V₁

T₂=(600 x 273)/475

T₂=345 K

Some items, such as rubber, float on the water, while some items, such as gold, sink in
the water. If an item floats is it more or less dense than the water?

Answers

Answer:

If an item is less dense, it floats on the water.

Explanation:

We know this since the more dense something it usually is heavier than if it was less dense. Which ways it down resulting to it sinking.

Please helppppppp. I need this D:

50 points

Answers

Answer:

dont u mean 13 points?

Explanation:

Can someone help me with these three questions? please

Answers

Answer:

23 43 45 43

Explanation:

To locate objects in their environments, bats in flight and porpoises under water both use ultrasound waves with frequencies that are beyond human hearing. These animals produce an ultrasonic wave and then detect echoes from nearby objects in order to determine the location of the object Porpoise Bat If a porpoise and a bat both produce ultrasonic waves when they are 16 meters from an object, which animal would hear its echo first? The bat would hear its echo first because sound travels faster in air than in water. O The porpoise would hear its echo first because sound travels faster in water than in air. O The bat would hear its echo first because the frequency of sound waves is greater in air than in water 0 The porpoise would hear its echo first because the frequency of sound waves is greater in water than in air.​

Answers

Answer: The porpoise would hear its echo first because sound travels faster in the water than in air.

Explanation:

PLEASE HURRY !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL GIVE BRAINLIEST

What type of rock is limestone? Describe how a limestone rock is likely to change over a long period of time.

Answers

Answer:

Over time, the limestone is broken down into its chemical parts and may come back to the surface as volcanic CO2 (in the atmosphere). From the atmosphere, the CO2 might again become part of the biosphere by molluscs or corals absorbing the CO2 to help make their shells

Explanation:

Over a long period of time, we would take a look at the rock "limestone" through the rock cycle. Limestone being a sedimentary rock would be converted to marble, a metamorphic rock if subjected to metamorphic conditions over an extensive period of time.

How many chickens would it take to kill an elephant?

Answers

Answer: One chicken with a bomb

Answer: 26,000 chickens

Explanation:

why can nuclear fusion occur in the core of a star

Answers

Answer:

When the core is hot enough, nuclear fusion commences. Fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy. ... This is because a single helium atom contains less mass than two hydrogen atoms. The excess mass is released as energy.

Name the following compounds and classify them as ionic or covalent.
a. Cu2CrO4
b. Ba(NO3)2
c. Cl2O
d. BrF5

Answers

A-copper chromate oxide ionic I think
B-barium nitrate ionic
C-chlorine monoxide ionic
D- Bromine pentafluoride covalent

The classification of the above given compounds would be listed below as follows:

a.) Cu2CrO4 = ionic

b. Ba(NO3)2 = ionic

c. Cl2O = ionic

d. BrF5= covalent

What is an ionic or covalent compound?

An ionic compound are those chemical substances that are made up of both positively charged ions called cations and negatively charged ions called anions.

A covalent compound is defined as the type of chemical compound that is formed when two nonmetals react with each other. This is seen in the chemical compound BrF5 where bromine and fluorine which are both nonmetals react with each other.

Learn more about chemical compounds here:

https://brainly.com/question/26556885

#SPJ6

would using a strainer be filtration?

Answers

Answer:

To some extent, yes

Explanation:

what is a solution for deforestation



(full sentences please)

Answers

The best solution to deforestation is to curb the felling of trees by enforcing a series of rules and laws to govern it. Deforestation in the current scenario may have reduced; however, it would be too early to assume. The money-churner nature of forest resources can be tempting enough for deforestation to continue.

The best solution to deforestation is to curb the felling of trees by enforcing a series of rules and laws to govern it. Deforestation in the current scenario may have reduced; however, it would be too early to assume. The money-churner nature of forest resources can be tempting enough for deforestation to continue.

Are the forces on the parachutes balanced?

A. The parachutes fall at a constant speed, so the forces are balanced.
B. There is a change in motion, so the forces are balanced.
C. The parachutes fall at a constant speed, so the forces are unbalanced.
D. There is a change in motion, so the forces are unbalanced.

Answers

Answer:

When the parachute opens, air resistance becomes much greater than gravity. The forces are no longer balanced and this changes her speed.

Explanation:

Eventually the upward force of the air equals the downward force of gravity. When forces are balanced the speed remains constant.

What is the charge of an electron?

Answers

There is the answer hope this helps

4. How many moles are in 375 L of O2?​

Answers

Answer: 16.7 moles

Explanation:

Between the green skinned lime and the yellow skinned lime, which of these are more acidic.

Answers

Green limes are more acidic as they tend to be smaller than yellow skinned limes. Yellow skinned limes tend to be sweeter whereas green skinned limes tend to be more sour. Green skinned limes are most likely immature compared to a yellow skinned lime which is mature

How many torr, atms, and psi is 303.9 kPa equal to?
Torr=
Atms=
Psi=
I'LL NAME YOU BRAINLIEST AND GIVE YOU 20 POINTS, IF YOU HELP ME SOLVE THIS PROBLEM!!!!! /^?^/ !!!

Answers

Answer:

2.99 atm

2279.43 torr

44.07 psi

Explanation:

Torr, atms and psi all units are units of pressure.

Conversion from KPa to atm:

1 KPa is equal to 0.00987 atm. To convert from KPa to atm we will multiply the  given value with 0.00987 atm.

303.9 KPa × 0.00987 atm / 1 KPa

2.99 atm

Conversion from KPa to torr:

1 KPa is equal to the 7.5006 torr. To convert from KPa to torr we will multiply the KPa value by 7.5006.

303.9 KPa × 7.5006 torr/ 1 KPa

2279.43 torr

Conversion from KPa to psi:

psi is pound per square inch. 1 KPa is equal to the 0.1450 psi. To convert from KPa to psi we will multiply the KPa value by 0.1450 psi.

303.9 KPa × 0.1450 psi /  1 KPa

44.07 psi

What is happening at x ?

Answers

A. The sun is causing evaporation.
C Because Clouds need water for rain so all of the molecules go into the cloud like storage

which diagram would this be?

Answers

Carbonic acid ---> water + carbon dioxide

so it's the second option


Sulfur dioxide represents which of the following representative particles?

molecule

formula unit

atom

ion

Answers

Answer:

molecule

Explanation:

Sulfur dioxide represents a molecule.

A molecule is a covalent compound that has discrete or separate units. The formula of this molecule given is:

    SO₂

Here, two non-metals share their valence electrons form a covalent bond.

An atom is the smallest indivisible particle of a substance that takes part in a chemical reaction. An ion is an atom that has lost or gained an electron.

Aluminum is used to build aero planes. Which two of its physical properties make it suitable for this use

Answers

Answer:

Titanium is another metal that's commonly used in aerospace engineering. It's strong, lightweight, Aluminum isn't the strongest metal, but it maintains a perfect balance of strength and low weight that make airplanes fly

Explanation:

vote mee as the brainliest

Answer:

it weight were so thin

explanation

With a weight roughly a third lighter than steel, it allows an aircraft to either carry more weight, or become more fuel efficient. High Strength — Aluminum's strength allows it to replace heavier metals without the loss of strength associated with other metals, while benefitting from its lighter weight

Explain in terms of intermolecular forces why water has an unusually high heat of fusion?

Answers

Answer:

hydrogen bonding among water molecules

Explanation:

In mass-volume and volume-mass calculations, all gases are
considered to be at standard
____
and pressure, also
referred to as
___


answer: temperature, stp
:P

Answers

Answer: temperature, Stp

Explanation:

The calculation for standard temperature and pressure has been referred to as STP.

The mass-volume and volume-mass, has been the measurement of the concentration of the solution.

The mass-volume has been the measurement of mass of sample in the volume of solution. The volume by mass has been the measurement of the volume of solute to mass of solution.

Standard conditions

The measurement has been performed with the standard conditions of temperature and pressure.

The standard temperature has been 273.5 K and standard pressure has been 1 atm. These temperatures and pressure has been referred to as STP.

Thus, the calculation for standard temperature and pressure has been referred to as STP.

Learn more about standard conditions, here:

https://brainly.com/question/2142674

4.
Find the area of a rectangle whose length and width are
9.025 x 106 m and 5.215 x 10 m respectively.
-8

Answers

Answer:

0.47m²

Explanation:

Given parameters:

Length = 9.025 x 10⁶m

Width  = 5.215 x 10⁻⁸m

Unknown:

Area of the rectangle  = ?

Solution:

Area is the derived from the product of the length and width of a body.

 Area  = length x width  = 9.025 x 10⁶m  x  5.215 x 10⁻⁸m

  Area  = 0.47m²

Part b (r)–3-chloro-2-methylhexane will undergo a nucleophilic substitution reaction in the presence of sodium ethoxide and ethanol. complete the mechanism for the sn2 reaction and draw the products of the reaction. draw all missing reactants and/or products in the appropriate boxes by placing atoms on the grid and connecting them with bonds and including charges where needed. indicate the mechanism by drawing the electron-flow arrows on the molecules. arrows should start on an atom or a bond and should end on an atom, bond, or where a new bond should be created.

Answers

Answer:

See answer below

Explanation:

To understand this, we need to make the reaction involved with the given configuration. Configuration R means that the substituents of the molecule, the priority order goes clockwise (From heaviest to lightest) so, if an Sn2 is ocurring in the reaction this means that the nucleophile, which in this case, is the sodium ethoxide will attack the molecule in the opposite side of the leaving group (which is the chlorine).

Also when this occurs, as Sn2 is a bimolecular reaction and is held in one step, it occurs an inversion in the configuration of the product. So, it's the innitial reactant was R, then the final product will be S.

The mechanism and product can be watched in the attached picture

Hope this helps.

Which observation shows that a substance is malleable
(A) the substance breaks apart when stretched
(B) the substance shatters when hit with a hammer
(C) the substance flattens when hit with a hammer
(D) the substance can be stretched easily into wires

Answers

Answer:

B

Explanation:

Answer:

It is C: the substance flattens out when struck with a hammer

Explanation:

Given:

8CO + 17H2 → C8H18 + 8H2O

In this chemical reaction, how many grams of H2 will react completely with 6.50 moles of CO? Express your answer to three significant figures.

grams of H2 will react completely.

Answers

Answer:

- 27.6 grams of hydrogen are required.

Explanation:

Other Questions
In the movie The Hunger Games, the Capitol (a term used to refer to what we would call the government) produced genetically enhanced birds called jabber jays to spy on rebels. Unexpectedly, these birds bred with mockingbirds, creating a new hybrid bird called the mocking jay. The Capitol did not intend for this to happen, and the bird became a symbol of rebellion. What lessons can we draw about genetic engineering from these examples? Could a scenario like this, where a genetically engineered organism hybridizes with a wild animal or plant, happen in the real world? Why or why not? A cell phone company offers two plans to its subscribers. At the time new subscribers sign up, they are asked to provide some demographic information. The mean yearly income for a sample of 39 subscribers to Plan A is $55,575 with a standard deviation of $8,970. For a sample of 29 subscribers to Plan B, the mean income is $59,475 with a standard deviation of $6,942.At the .025 significance level, is it reasonable to conclude the mean income of those selecting Plan B is larger? Hint: For the calculations, assume the Plan A as the first sample.The test statistic is ______. (Negative amount should be indicated by a minus sign. Round your answer to 2 decimal places.)The decision is _______the null hypothesis that the mean of Plan B is larger.The p-value is ______(Round your answer to 2 decimal places.) Solve 8 = 2^x+ 4Help meeee Use Of Feathers, Fat, and Freezing to answer questions 1-4.What is the authors primary purpose in writing the selection? -6 + (-8)= Whats the answer I need help I will give brainliest to who ever helps me!!. Answering the following questions will help you to focus on the outcomes of these experiments:How does the length to height ratio (the IMA) of trial 1 compare to trial 2?Why is the actual mechanical advantage less than the ideal mechanical advantage in each of the trials?If a machine was 100% efficient, how would the AMA compare to the IMA?Write a summary paragraph discussing this experiment and the results. Use the following questions and topics to help guide the content of your paragraph.According to your data, was your hypothesis correct? (Be sure to refer to your data when answering this question.)Summarize the conclusions that you can draw from this experiment. Use the questions above to guide your ideas.Summarize any difficulties or problems you had in performing the experiment that might have affected the results. Describe how you might change the procedure to avoid these problems.Give at least three examples from everyday life where an inclined plane is used to reduce the effort force needed to accomplish a task. can u help plsssssssssssssssssssssssss Which expression represents the phrase?"20 decreased by the sum of 6 and b." Which option is the basic unit of water, a compound?A. A water atomB. A hydrogen atomC. A hydrogen moleculeD. A water molecule Find the rule and the graph of the function whose graph can be obtained by performing the translation 4 units right and 3units down on the parent function f(x) = xl. change 12 out of 40 to a percentage mention many ways to change how we use water, Which way do you think is the best and explain why. What is an intended audience? Why is it important to make sure the articles you choose are meant for your intended audience? Staley Co. manufactures computer monitors. The following is a summary of its basic cost and revenue data: Per Unit Percent Sales price $480 100 Variable costs 312 65 Unit contribution margin $168 35 Assume that Staley Co. is currently selling 600 computer monitors per month and monthly fixed costs are $80,000. Staley Co.'s margin of safety ratio (MOS%) if 600 units are sold would be (round intermediate calculation up to nearest whole number of units): 79.5%. 19.5%. 33.4%. 17.7%. 20.5%. Cities in the Midwest became important centers for which of the following? who oversees the senate chamber? a. a judge b. the vice president c. speaker of the house d. speaker of the senate please answer a few biology questions for me! (asap please)1. heterozygous individuals have two of the same alleles for a particular gene.A. trueB. false2. the law of segregation states thatA. different alleles of a gene can never be found in the same organism.B. alleles of a gene separate from each other during gamete formation.C. each gene of an organism ends up in a different gamete.3. the law of independent assortment applies only to genes that areA. autosomalB. located on different chromosomes or are far apart on the same chromosomeC. located on the same chromosomes I feel like im not enough for anyone, back at my starting point, just forget that i was even here, just for get everything bc im nothing and none needs me at all. Justin needs to memorize words on a vocabulary list for Spanish class. He has 30 words to memorize, and he is two-thirds done. How many words has Justin memorized so far I'M BEGGING YOU. HELP ME. There is an image of the question.