An electron is in a region outside the nucleus. An electron
a) Is larger than a proton and has no charge
b) Has less mass than a proton and has a negative charge
c) Is smaller than a proton and has no charge
d) Has a positive charge

Answers

Answer 1

Answer:

b

Explanation:

electrons lie in the orbits of the atom. they are negatively charged and they are very small in size. they have very less mass than proton. ele tron has 1/1840 mass of proton.


Related Questions

Name three group l bases and three group ll bases

Answers

Answer:

Group 1: LiOH, NaOH, KOH

Group 2: Ca(OH)2, Sr(OH)2, Ba(OH)2

Explanation:

Classify the following as an element, compound, homogeneous mixture, or heterogeneous
Mixture :
Iron and rust

A. Element
B. Compound
C. Homogenous mixture
D. Heterogenous mixture

Answers

It is a homogenous mixture because when iron and rust mix it’s homogenous.

Answer:

It's an homogeneous Mixture

hehe

l Active transport
IL Simple diffusion
lll Facilitated diffusion
IV. Osmosis
Which of the above type of transport moves molecules against a concentration gradient?
Your answer:
ll and lV only
l only
ll only

Answers

Answer:

l only

Explanation:

The movement of substances in living cells can either require energy (active) or not (passive) depending on the direction of movement across concentration gradient. Naturally, substances tend to move down a concentration gradient i.e. difference in concentration, which is from a region of high concentration of water to a region of low concentration. This is the passive type of transport, which does not require energy input. Examples are osmosis, simple diffusion and facilitated diffusion.

However, another type of transport exists in which substances move against the concentration gradient i.e. from a less concentrated region to a more concentrated region. In this case, energy input in form of ATP is required for this kind of transport to occur. This transport is referred to as ACTIVE TRANSPORT. Hence, the answer is I only.

Which image shows a nonrenewable resource?

Answers

The can is the correct answer

Answer: The orange can shall be your answer.

Need help please: How many mL of 0.150 Molarity CaBr2 solution must be used to react with 50 mL of 0.115 Molarity AgNO3?

CaBr2 + 2AgNO3 --> Ca(No3)2 + 2AgBr

Answers

Answer:

0.019 L or 19.1 mL

Explanation:

Given the equation of the reaction; we have:

CaBr2 + 2AgNO3 --> Ca(No3)2 + 2AgBr

We must first obtain the number of moles of AgNO3 reacted. This can be obtained from;

Concentration of AgNO3 reacted= 0.115 M

Volume of AgNO3 reacted= 50 ml

Since

Number of moles of AgNO3= concentration of AgNO3 × volume of AgNO3

Number of moles = 0.115 M × 50/1000 = 5.75 ×10^-3 moles

From the reaction equation;

2 moles of AgNO3 reacts with 1 mole of CaBr2

5.75 ×10^-3 moles of AgNO3 reacts with 5.75 ×10^-3 moles × 1 /2 = 2.875×10^-3 moles of CaBr2

Now;

Number of moles of CaBr2= concentration of CaBr2 × volume of CaBr2

Number of moles of CaBr2= 2.875×10^-3 moles

Volume of CaBr2= ????

Concentration of CaBr2= 0.150 M

Hence;

Volume of CaBr2= number of moles of CaBr2/ concentration of CaBr2

Volume of CaBr2= 2.875×10^-3 moles / 0.150

Volume of CaBr2= 0.019 L or 19.1 mL

Answer:

19 mL of CaBr₂ solution should be used to react with AgNO₃

Explanation:

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) react:

AgNO₃: 2 molesCaBr₂: 1 mole

50 ml of 0.115 M AgNO₃ react. Since molarity is the number of moles of solute per liter of solution, then you can do the following rule of three: if there are 0.115 moles of AgNO₃ in 1 L, in 0.05 L (being 1 L = 1000 mL, then 50 mL = 0.05 L How many moles are there?

[tex]moles of AgNO_{3}=\frac{0.05L*0.115 moles}{1 L}[/tex]

moles of AgNO₃=5.75*10⁻³

Now we can make a new rule of three to calculate the amount of moles necessary for CaBr₂ to react with moles of AgNO₂: if stoichiometry 2 moles of AgNO₃ react with 1 mole of CaBr₂, 5.75*10⁻³ moles of AgNO₃ with how many moles of CaBr₂ react ?

[tex]moles of CaBr_{2} =\frac{5.75*10^{-3}moles of AgNO_{3}*1 mole of CaBr_{2} }{2moles of AgNO_{3}}[/tex]

moles of CaBr₂=2.875*10⁻³ moles

Being 0.150 the molarity of the CaBr₂ compound, you can apply the following rule of three: if by definition of molarity 0.150 moles are in 1 L, 2.875 * 10⁻³ moles in how much volume is it present?

[tex]volume=\frac{2.875*10^{-3} moles*1L}{0.150 moles}[/tex]

volume=0.019 L

Being 1 L = 1000 mL, then 0.019 L = 19 mL

19 mL of CaBr₂ solution should be used to react with AgNO₃


The best method to improve air quality is to
A. use technology to reduce the pollutants in air
b. produce less pollution
c. produce less pollution and use technology to reduce the pollutants in air
d. better utilize land and technology to prevent pollution
Please select the best answer from the choices provided

Answers

Answer:

A produce less polution

Explanation:

Answer:

C) produce less pollution and use technology to reduce the pollutants in air

Explanation:

EDG2020

Atoms with a high electronegativity, like oxygen have a strong attractive force
for electrons because
A. they have only a few valence electrons and need a total of eight to
fulfill the octet rule
O B. they're trying to share electrons with other elements of high
electronegativity
O C. opposites attract
O D. they re close to filling their outer shell, fuffilling the octet rule

Answers

Answer:

D. they're close to filling their outer shell, fulfilling the octet rule

Explanation:

:)

Is Raisin Bran cereal with milk homogeneous

Answers

Answer:

no

Explanation:

Homogeneous means that the substance looks uniform throughout. This means that all of it looks the same (ex. juice or water). Because you can see the different parts of raisin bran cereal with milk it is not homogeneous, it is heterogeneous.

Will Mark Brainly thing please help

Balance this equation. If a coefficient of "1" is required, choose "blank" for that box.


CO + O ₂ → CO ₂

Answers

Answer:

2CO + O ₂ → 2CO ₂

Explanation:

CO + O ₂ → CO ₂

Left Side

C = 1

O = 3

Right Side

C = 1

O = 2

So we'll balance the oxygen first

2CO + O ₂ → 2CO ₂

Left Side

C = 2

O = 4

Right Side

C = 2

O = 4

Ok so balancing the O has also balanced the C

physical science 6.06 part one

Answers

Answer:2 for 5, 6 for7

Explanation:

4. What is the name of A13+?
A)Aluminum ion
B)Aluminum
C)Aluminous ion
D)Aluminide ion

Answers

Answer:

Aluminum ion

Explanation:

I used Google tbh but it has a higher charge then a regular Aluminum atom

Aluminide Ion

I think it’s the right answer

What is the potential energy of the bowling ball as it sits on top of a building?

Answers

Answer:

Potential energy is the amount of energy calculated from an object's height off the ground.

Explanation:

Potential energy = Mass x Height x Gravity

Well if it isn’t moving, then there wouldn’t be any potential energy. So the answer is 0 :) hope this helped


hii:) how to do (c)?

Answers

Answer:

C

Explanation:

C shows a mixture of CO2 and H2O, 2 compounds

Answer:

C

Explanation:

C shows a mixture of CO2 and H2O, 2 compounds

Questions
Warm air rising in the atmosphere is an example of heat being transferred by
o absorption
O conduction
O convection
O radiation

Answers

Answer:

the answer is convection

convection

10 Points
Why was Dalton's theory of the atom incorrect?
A. Dalton theorized that atoms were too small to see but they are not.
B. Dalton' theory was correct.
C. Dalton theorized that had negative charges spread throughout them but they are
actually in electron shells.
D. Dalton theorized that atoms were indivisible but they are actually made of smaller
parts.
Reset Selection

Answers

Answer:

D

Explanation:

The indivisibility of an atom was proved wrong an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions......

hope i helped

pls mark brainliest,,,,,thanks

John Dalton was the chemist that gave the theory of atoms. His atomic model was incorrect as he said that the atoms cannot be further divided, but they are made of smaller particles. Thus, option D is correct.

What is Dalton's atomic model?

Dalton's atomic model stated that all matter is composed of atoms that are made of elements with identical properties and mass. He further stated the formation of the compounds from the molecules.

In the theory, he stated that atoms cannot be divided further and are indivisible. This was proven wrong as the atoms are composed of sub-atomic particles namely, electrons, neutrons, and protons.

Therefore, the statement that atoms are indivisible in Dalton's atomic theory is incorrect.

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Which structural formula represents an isomer?

Answers

Answer: 4

Explanation: same amt of Hs Cs and Cls

The Option 4 has same number of atoms but arranged differently so it is the isomer of the given compound.

What is an Isomer ?

Isomers are compounds that contain exactly the same number of atoms, i.e., they have exactly the same empirical formula, but differ from each other by the way in which the atoms are arranged.

By the definition of Isomer we can understand that we have to look for a compound that has same number of Carbon , Hydrogen and Chlorine atoms as that given .

Number of Carbon atoms = 3

Number of Hydrogen atoms = 6

Number of Chlorine atoms = 2

It can be seen that there are same number of Carbon , Hydrogen and Chlorine atoms in the fourth option , so Option 4 is the correct answer.

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What’s the answer to this?

Answers

Answer : The balanced chemical reaction will be:

[tex]3Ca(s)+2Al(NO_2)_3(aq)\rightarrow 2Al(s)+3Ca(NO_2)_2(aq)[/tex]

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.

When solid calcium metal reacts with aqueous aluminum nitrate then it gives aqueous calcium nitrate and solid aluminium.

The balanced chemical reaction will be:

[tex]3Ca(s)+2Al(NO_2)_3(aq)\rightarrow 2Al(s)+3Ca(NO_2)_2(aq)[/tex]

A molecule is what ?

Answers

Answer:

Explanation:

A group of atoms bonded together and the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. They are made up of atoms that are held together by chemical bonds. These bonds exchange electrons among atoms.

A molecule is just a group of two or more atoms bunched together.

Why do you subtract the mass of the solute from the total mass desired when making mass percent calculations?

Answers

I don’t know do you know hahhahahahaha

We can represent the concentration of a material even when we don't know its molecular mass, since mass percentage and parts per million or a billion are just alternative ways of expressing the ratio of the mass of a solute to the mass of the solution.

What is molecular mass ?

The mass of a certain molecule is its molecular mass, which is expressed in daltons. Because they contain various isotopes of an element, multiple molecules of the same substance can have distinct molecular weights.

More solute can be dissolved in a given volume of solution to increase concentration, since doing so increases the mass of the solute. By allowing some of the solvent to evaporate, which reduces the volume of the solution, concentration can be increased.

The amount of a solute that is present in a specific amount of solvent or solution is known as the concentration of a solution. Controlling the stoichiometry of reactants for solution reactions requires knowledge of the solute concentration.

Thus, We can represent the concentration of a material even when we don't know its molecular mass.

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Why does common table salt (NaCl) have a high melting point?
A.
It forms an ionic bond with a crystal lattice structure.
B.
It forms a covalent bond with a Lewis dot structure.
C.
It forms a metallic bond with an electron sea model structure.
D.
It forms a covalent bond by sharing electrons.
E.
It forms a metallic bond with a Lewis dot structure.

Answers

The correct answer is c

Answer:C is not the answer. I just got it wrong in Edmentum

Explanation:

how can the hemlock woolly upset natural ecosystem?

Answers

Answer:

The HWA attacks eastern hemlock trees in forests and ornamental hemlock trees found in our residential landscaping. It feeds on the hemlock trees' young twigs by sucking the sap, causing their buds to die and needles to dry out and drop from the plant prematurely i think

hope i helped!!

What volume of hydrogen will be produced at STP by the reaction of 67.3 g of tin with excess water according to the following reaction?

Answers

Answer:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

Explanation:

Sn + 2H2O ==> Sn(OH)2 + 2H2

67.3 g Sn x 1 mol/119 g x 2 mol H2/mol Sn x 22.4 L/mole = answer in liters

The volume of hydrogen that will be produced from the reaction of 67.3 g of tin with excess water is 12.68 L

How to determine the mole of tin Mass of Sn = 67.3 gMolar mass of Sn = 119 g/mol Mole of Sn =?

Mole = mass / molar mass

Mole of Sn = 67.3 / 119

Mole of Sn = 0.566 mole

How to determine the volume of H₂ produced

Sn + 2H₂O —> Sn(OH)₂ + H₂

From the balanced equation above,

1 mole of Sn reacted to produce 1 mole of H₂.

Therefore,

0.566 mole of Sn will also react to produce 0.566 mole of H₂

Recall

1 mole of H₂ = 22.4 L at STP

Therefore,

0.566 mole of H₂ = 0.566 × 22.4

0.566 mole of H₂ = 12.68 L

Thus, 12.68 L of H₂ were obtained from the reaction.

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What is the converse of the conditional statement?


Ifx is even, then x + 1 is odd.

If x is not even, then x + 1 is not odd.

Ifx + 1 is odd, then x is even.

Ifx + 1 is not odd, then x is not even
Ifx is even, then x + 1 is not odd.

Answers

Answer:

Conversing the conditional statement is nothing but switching the hypothesis and conclusion. Therefore, the converse of the given conditional statement will be “If x is odd, then x+1 is even.

Explanation:

The converse of the conditional statement is if x is odd, then x+1 is even.

What is conditional statement?

A conditional statement is defined as a specific kind of compound sentence that meets the "if...then" requirement. If the hypothesis is correct but the conclusion is untrue, a conditional statement is false. Programming language elements called conditional statements, expressions, or simply conditionals instruct the computer to take specific actions.

Reversing the two statements that make up a categorical or implicational statement yields its opposite. Carry on a discussion is more properly referred to as "converse." Let's say there is a conditional statement of the form "If p then q." If q, then p is the converse. In a symbolic sense, q p is the opposite of p q. The reverse of a conditional assertion is not logically comparable.

Thus, the converse of the conditional statement is if x is odd, then x+1 is even.

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How many grams of LiNO2 are required to make 250 mL of 0.75 Molarity solution?

Answers

Answer:

159 g OF LiNO2 WILL BE USED TO MAKE 0.25 L OF 0.75 M SOLUTION.

Explanation:

How many grams of LiNO2 are required to make 250 mL of 0.75 M?

First calculate the molarity in mol per dm3

0.75 M of LiNO2 reacts in 250 mL = 250 /1000 L volume

0.75 M = 0.25 L

In 1 L, the molarity of LiNO2 will be:

= (0.75 * 1/ 0.25) M

= 3 mol/dm3 of LiNO2

Next is to calculate the molarity in g/dm3:

Molarity in mol/dm3 = molarity in g/dm3 / RMM.

RMM of LiNO2

(Li = 7 , N =14 , 0 = 16)

RMM = ( 7 + 14 + 16 * 2) = 53 g/mol

Molarity in mol/dm3 =  Molarity in g/dm3 / RMM

Molarity in g/dm3 = Molarity in mol/dm3 * RMM

Molarity in g/dm3 = 3 * 53

Molarity in g/dm3 = 159 g/dm3.

So therefore, to make 250 mL of 0.75 M of LiNO2, we use 159 grams of LiO2.

Which of the following atoms has the largest atomic radius? Provide an explanation
a Hydrogen
b. Sodium
C Lithium
d Rubidium

Answers

Answer:

d Rubidium

Explanation:

The atomic radius of an atom is the distance from the center of the nucleus to its outermost electron.

The atomic radius of elements varies in the periodic table, it increases as you go down in a group and decreases along the period from left to right.  

All the elements listed: Hydrogen, Sodium, Lithium and Rubidium belong to the same group in the periodic table (group 1), Since atomic radius increases from top to bottom in a group, Rubidium has the largest atomic radius.

What happens to the motion of the atoms in a spoon after is placed in hot soup?

Answers

Answer:

they move faster

Explanation:

Answer:

They move faster.

When designing an engineering solution, certain criteria and constraints must be considered. Criteria are the features of the design that must be kept in mind while solving the problem. A criterion answers the question, What do you want the design to do? A constraint is something that prevents the design from performing at its best. These constraints can include time, resources, and money.




When designing the airbag, what are some criteria you might consider and what constraints would you anticipate in its implementation?




Create a list of at least two criteria and at least three constraints that you must consider in the design. Rank them in order of importance, with the most important ones at the top of the list.

Answers

Answer:

The criteria listed in order of importance are;

1) To be inflated in the event of a collision in order to protect the occupants of the front of the vehicle

2) To be able to withstand the load of the breaking force of the occupants in the front seat of the vehicle during a collision

3) To be relatively tough so as to resist being torn on impact with a sharp object

The constraints listed in order of importance are;

1) How is the model design able to sense a collision that requires the airbag to be inflated

2) The uncertainty of the load the airbag will withstand upon collision

3) The possible hazard that could be caused by the gas used to inflate the airbag

4) The usage/interaction tendency between the vehicle occupant and the airbag system

Explanation:

In order to produce an effective design, it is important to be able to foresee the possible deficiencies of an idea so as to be able to mitigate the problems before an actual incident happens.

The criteria that should be considered include:

To be inflated in the event of a collision.Ability to withstand the load of the braking force of the occupants.Durability.

It should be noted that when designing an engineering solution, there are some criteria and constraints that must be considered in order to achieve the objective of the engineering solution.

Some of the criteria that should be considered include the fact that it should be inflated in the event of a collision, the ability to withstand the impact of the braking force of the occupants, durability, etc.

The constraints listed include how the model design is able to sense a collision that requires the airbag. The possible hazards that can be caused by the gas. Also, it's vital to consider the interaction tendency between the airbag and the occupants of the vehicle.

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An element and an atom are different but related because
a) A particular element is made up of many different types of atoms b) A molecule is the same as an atom
c) An element is made up of all the same type of atom
d) An element is smaller than an atom

Answers

Answer:

c) An element is made up of all the same type of atom

Explanation:

Atoms are the smallest unit of an element that consists of protons, electrons and neutrons in its structure. An element is the smallest part of a chemical substance that cannot be disintegrated i.e. it cannot be broken down further.

Atoms and elements are different in many ways but they are connected in the sense that an element contains only one type of atoms. For example, aluminum element is made up of only aluminum atoms. Different atoms form a molecule but same atoms form an element.

The difference of the element and iron should be option c) An element is made up of all the same type of atom.

What are atoms and elements?

The atom represents the smallest unit that comprises of protons, electrons, etc.

While on the other hand, the element represents the small part of the chemical substance that should not be disintegrated. Also, it cannot be split. They both should be interlinked.

Therefore, the option c is correct.

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In a reaction, 25 grams of reactant
AB breaks down into 10 grams of
product A and an unknown amount
of product B. Using the law of conservation of mass, how much does product B weigh?
a. 25 g
B. 10 g
С. It cannot be determined from the given
information.
d
D. 15g

Answers

Answer:

D. 15g

Explanation:

The law of conservation of mass states that, in a chemical reaction, mass can neither be created nor destroyed. This means that the amount of matter in the elements of the reactants must be equal to the amount in the resulting products.

In this question, 25 grams of a reactant AB, was broken down in a reaction to produce 10 grams of products A and X grams of product B. According to the law of conservation of mass, the mass of the reactant must be equal to the total mass of the products. This means that 25 grams must also be the total mass of both products in this reaction. Hence, if product A is 10 grams, product B will be 25 grams - 10 grams = 15 grams.

Therefore, product B must be 15 grams in order to form a total of 25 grams when added to the mass of product A. This will equate the mass of the reactant AB and fulfill the law of conservation of mass.

Neutralization Reactions
PREDICT THE PRODUCTS OF THE FOLLOWING REACTIONS
+
HNO3+ Ba(OH)2
+
H3PO4 + Ca(OH)2

Answers

Answer:

2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O

H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O

Explanation:

2HNO3+ Ba(OH)2 = Ba(NO3)2 + 2H2O

H3PO4 + Ca(OH)2 = Ca3(PO4)2 + 6H2O

H+

O2-

OH-

Ba2+

Ca2+

NO3-

P 5+, 3+, 3-

H2O

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