If the atomic number of Lithium is 3 and its mass number is 7, how many protons, electrons, and neutrons does a neutral
atom of Li have

Answers

Answer 1

Answer:

Protons = 3

Neutrons = 4

Electrons = 3

Explanation:

For every atom, the atomic number is equal to the number of protons.

In a neutral atom (atom with no charge) the number of protons is equal to the number of electrons.

To calculate neutrons subtract the number of protons (atomic number) from the rounded molar mass:

7 - 3 = 4 neutrons


Related Questions

List and define the 3 parts of a chemical equation (R->P).

Answers

Answer:

R- reactants

arrow- yields

p- products

Explanation:

CFCs were found to destroy what important compound in our atmosphere?
A: ozone
B: nitrogen
C: water vapor
D: helium

Answers

Answer:

A: ozone

Explanation:

Chlorofluorocarbons (CFCs) and hydrofluorocarbons (HCFCs) destroy ozone in the stratosphere.

Answer:

A: ozone

Explanation:

right on EDGE 2021

A wave is a _____that transfers _____ through a ______
A.) medium, disturbance, energy
B.) disturbance, energy, medium
C.) energy, disturbance, medium
D.)disturbance, medium, energy

Answers

The correct answer is B.) disturbance,energy,medium

A wave is a  disturbance that transfers energy through a medium. There

are types of  such as sound and light waves.

A wave involves the transfer of energy such as sound, light waves etc

through a medium. The medium could be through liquids , solids or air and

they have characteristic waves which pass through them.

When a wave transfers energy through a medium, the matter involved

doesn't experience any type of movement.

Read more on https://brainly.com/question/19210453

if you could choose from having fire or ice powers, what would you choose?

Answers

Answer: I would choose ice

Ice is the solid state of water, a normally liquid substance that freezes to the slid state at temperatures of 0 °C (32 °F) or lower and expands to the gaseous state at temperatures of 100 °C (212 °F) or higer

Answer:

fire

Explanation:

just my opinion but.

If you have fire you could melt things and it defeats ice and ice is easily melted.

Fire is good in a "battle" too lol.

If an atom has a diameter of 395 pm,
what is its radius?

Answers

Answer:

197.5pm

Explanation:

Given parameters:

Diameter of the atom  = 395pm

Unknown:

Radius of the atom  =?

Solution:

Radius is the half of diameter;

  Radius = [tex]\frac{diameter}{2}[/tex]

 Radius  = [tex]\frac{395}{2}[/tex]   = 197.5pm

Benzoic acid, C6H5COOH, is another derivative of benzene. The pH of an aqueous solution of benzoic acid at 298 K is 2.95. Determine the concentration of hydroxide ions in the solution,

Answers

Answer:

[OH⁻] = 8.91x10⁻¹²M

Explanation:

In aqueous solutions, the [OH] and [H⁺] are associated in the equation of hydrolisis of water:

1x10⁻¹⁴ = [OH⁻] [H⁺]

With pH, we can solve for [H⁺] and obtain, the [OH⁻] using this equation:

pH = -log [H⁺]

[H⁺]= 10^-pH

[H⁺] = 1.122x10⁻³M

1x10⁻¹⁴ = [OH⁻] [1.122x10⁻³M]

[OH⁻] = 8.91x10⁻¹²M

What causes rain to precipitate from clouds?

Answers

Answer: Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth.

Explanation: Have a blessed day!

Answer: Precipitation forms in the clouds when water vapor condenses into bigger and bigger droplets of water. When the drops are heavy enough, they fall to the Earth.

Explanation:hope this helps u

why burning of wood and cutting it into small pieces are considered as two different types
of changes.in sort type
.
اور بس انتي شلال​

Answers

Answer:

burning causes pollution cutting results furniture

Explanation:

are u a nepali ?

Answer:

burning of wood, new substances are formed and hence it is a chemical change. While cutting the wood into small pieces no new substance is formed, thus it is a physical change. Hence, burning of wood and cutting it into small pieces are considered as two different types of changes.

According to the periodic table, the neutral atom of what element has 4
protons, 5 neutrons, and 4 electrons?

Answers

Answer:

Beryllium

Explanation:

Given parameters:

Number of protons = 4

Number of neutrons  = 5

Number of electrons  = 4

Unknown:

Element = ?

Solution:

To determine an element, the atomic number is the most important identifier.

The atomic number is the number of protons in an atom.

Since the atom here has a proton number of 4, checking on the periodic table, it is Beryllium, Be

how is a solute and a solvent different

Answers

Solute is substance which is dissolve in a solvent and Solvent is a substance that dissolves solute in a solution.
Answer: Solute is the substance being dissolved, and solvent is the substance that the solute is dissolving in. For example, 1 g of sugar in 100 mL of water. Sugar is being solved so it is the solute, and water is what the sugar is dissolving in so it is the solvent.

I WILL GIVE BRANLIEST What factor is the temperature in an ecosystem? Abiotic or Biotic?

Answers

Abiotic I think

“ temperature is an abiotic factor with an ecosystem abiotic factors are the parts of an ecosystem that are nonliving such as weather and temperature”

Answer:abiotic .

Explanation:

how can you test a sample of soil for acidity or alkalinity​

Answers

Answer:

Scoop a soil sample into a fresh container, add 1/2 cup of water, and mix. Then, add 1/2 cup of baking soda. If the soil bubbles or fizzes, the soil is acidic. The reaction you're seeing is the result of acidic soil coming into contact with an alkaline substance (baking soda).

Explanation:

Hope this helped!

Can someone help me plz for BRAINLIST I swear I’ll give it to you !! I’m in 6th grade ( just started ) please help I’m begging !!

Answers

Answer:

Lithium                    Li                        3                 3                 4

Titanium                Ti                        22               22               26

Cobalt                   Co                      27                27               32

Silicon                    Si                       14                 14                14

Platinum                 Pt                      78                 78               117

Bromine                 Br                      35                 35               45

Nickel                     Ni                     28                  28               31

Manganese            Mn                   25                    25             30

Boron                      B                       5                     5                6

Oxygen                   O                       8                     8                8

Zinc                         Zn                      30                  30             35

Lead                        Pb                      82                   82            125

Explanation:

Can I have brainliest? This took me like an hour to find the answers and type the answers. TYSMMMMMMMMMMMMMMM  

Edit: I am also in 6th grade, but I looked it up because I haven't learned this yet.

When you climb to the top of a water slide, you are gaining:
O A. gravitational kinetic energy.
B. chemical potential energy.
c. gravitational potential energy.
D. chemical kinetic energy.

Answers

Answer:

C

Explanation:

You climbing the water slide gives you potential energy and your building gravitational eneergy.

When we climb the top of a water slide we are gaining gravitational kinetic energy. That is we are moving through the surface and thus we experience both kinetic energy and gravitational energy.

What is  kinetic energy?

Kinetic energy of a body is generated by virtue of its motion. Gravitational energy is a form of energy by which the an object attracts other object to its center of mass. Both forms of energy are  directly proportional to the mass of the object.

Potential energy is generated by virtue of  the position and height of the object. As the height from surface increases, potential energy increases. Potential energy and kinetic energy together called as mechanical energy of an object.

When starts moving our potential energy is converting to kinetic energy. Hence, when we climb the top of a water slide kinetic energy starts to increase. Thus, option A is correct.

To find more on kinetic energy, refer here:

https://brainly.com/question/26472013

#SPJ2

1.Which statement(s) is/are true about a divergent plate boundary? Check all that apply.

A.new crust is created here

B.an ocean trench is found here

C.a rift valley is associated with this boundary

D.subduction occurs at this boundary

E.a mid-ocean ridge is found at this boundary

F.San Andreas is an example of this type of boundary

G.sea floor spreading occurs here
--------------------------------------------------------------------------------------------------------------------------------

2.Which statement(s) is/are true about a transform plate boundary? Check all that apply.

A.an ocean trench is found here

B.earthquakes frequent this boundary

C.subduction occurs at this boundary

D.two plates are sliding past each other

E.San Andreas is an example of this type of boundary

F.an ocean trench is found here
--------------------------------------------------------------------------------------------------------------------------------
3.Which statement(s) is/are true about a convergent plate boundary? Check all that apply.

an ocean trench is found here

a rift valley is associated with this boundary

subduction occurs at this boundary

volcanic island chain might occur here

folded mountains might form here

earthquakes might occur here

San Andreas is an example of this type of boundary
--------------------------------------------------------------------------------------------------------------------------------
SINCE THIS IS ALOT OF THINKING I AM GIVING A GOOD AMOUT OF POINTS.....
PLEASE DONT SCAM AND STEAL THE POINTS

Answers

Answer:

I know the first one is c or e but i not sure what the others are, the second one is- wait are you sure your in 6th grade lol? I dont remember learning this

Answer:

OMG ITS MEHH

Explanation:

what is the density of a 100g piece of titanium if a 10g piece of titanium has a density of 4.506g/cm3?

Possible answers:
A: 45.06g/cm3
B:4.506g/cm3
C: 9.1g/cm3
D: 91g/cm3

Answers

Answer:

B. Density stays the same no matter how much of a substance there is.

Explanation:

Density of the substance is the same and it is the measure of its mass per unit volume. Thus, the mass of titanium per  1 cm³  is 4.506 g which is the same for 10 g, 100 g or whatever the mass.

What is density ?

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed.  Density of an object depends on its bond type, temperature and pressure.

The more denser the object is , more will be its mass distribution per unit volume. Substances denser than water will sink on it otherwise they float on water.

Density is constant for a substance, the distribution of given mass per unit volume is same for all masses. Hence, the density of 100 g Ti is same as that of 10 g. i.e., 4.56 g/cm³.

To find more on density, refer here:

https://brainly.com/question/15164682

#SPJ2

Which state of matter do mercury, orange juice and lava represent?

Answers

Answer:

they represent liquid state of matter.

Answer:

they state liquid state of matter .

hope it is helpful to you

PLEASE HELP!!!!!!!!
Step 4: Create Lewis dot diagrams.
a) Draw Lewis dot diagrams of the reactants and products on the paper with your chemical equation.
b) Select a different color to use for each element in the chemical reaction. Use your chosen color
for the element’s symbol and for its valence electrons.
c) Label these diagrams “Lewis Dot Diagrams.”

Answers

Answer:

Hey student your question is not proper arrange, i don't understand what you want us to do

I WILL GIVE BRANLIEST What factor is a river in an ecosystem? Abiotic or Biotic?

Answers

Answer:

River ecosystems are flowing waters that drain the landscape, and include the biotic (living) interactions amongst plants, animals and micro-organisms, as well as abiotic (nonliving) physical and chemical interactions of its many parts.

Explanation: it should be both

Answer:

Ecosystems mostly consist of both - abiotic and biotic factors. For that reason the answer which would properly address your question would be A - biotic and abiotic factors. Biotic factors are considered to represent the part of nature that are living and affect other organisms while abiotic factors are things which do not affect other living compounds.

Potato strips placed in a container of concentrated salt water will ultimately __.

Answers

Answer:

00000

Explanation:

Question 14
1 pts
How many moles of NaCl could be found in 0.4 L of a 0.9 M solution? Round your answer to
two decimal places.

Answers

Answer:

0.36mol

Explanation:

Given parameters:

Volume of NaCl  = 0.4L

Molarity  = 0.9M

Unknown:

Number of moles  = ?

Solution:

To find the number of moles, the molarity of a solution is the amount of solute contained in a solution.

 Molarity  = [tex]\frac{number of moles}{volume}[/tex]  

 Number of moles = molarity x volume

 Insert the parameters and solve;

 Number of moles = 0.4 x 0.9  = 0.36mol

what is inert pair effect​

Answers

Answer:

The inert pair effect is the tendency of the two electrons in the outermost atomic s-orbital to remain unshared in compounds of post-transition metals. The term inert pair effect is often used in relation to the increasing stability of oxidation states that are two less than the group valency for the heavier elements of groups 13, 14, 15 and 16. .[1] The name suggests that the outermost s electrons are more tightly bound to the nucleus in these atoms, and therefore more difficult to ionize or share

What can you say about an atom with 4 protons, 2 neutrons, and 5 electrons?

Answers

Explanation:

This is a neutral beryllium atom

How many orbitals surround the nucleus in a neutral atom of sulfur (S)?
1
3
5
6

Answers

it would be 3 have a good day

SOMEONE HELP ME PLEASE ILL GIVE BRAINLY!

Is the following picture an example of a chemical change or a physical change?

A chemical change, because the atoms are rearranging to form new molecules.

A physical change, because the molecules are staying the same.

A chemical change, because the molecules are staying the same.

A physical change, because the atoms are rearranging to form new molecules.

Answers

Answer:

It would be a physical change, because the atoms are rerranging to form new molecules!

Explanation:

how do i do the chemicals

Answers

you have to put them togeter

Can the process of rusting be called combustion? ​

Answers

Answer:

no the answer is oxidation

The process of rusting cannot be called combustion due to the following reasons : ... No energy is obtained in a rusting process. Combustion is a chemical process in which a combustible substance reacts with oxygen to produce heat and light whereas in rusting, a metal reacts with oxygen to produce metallic oxide.

Question 4 of 10
What is the molarity of a solution of 3 moles (mol) of FeBr3 in 1/2 L water?
A.
3 mol/2L
B.
2L/3 mol
C.
0.5L/3 mol
D.
3 mol/0.5 L
SUBMIT

Answers

Answer:

B

Explanation:

Answer:

D. 3 mol/0.5 L

Explanation:

Just took the quiz

In your own words, please explain how to name acids.

Answers

Answer:

Acids are named based on their anion — the ion attached to the hydrogen. In simple binary acids, one ion is attached to hydrogen. Names for such acids consist of the prefix “hydro-“, the first syllable of the anion, and the suffix “-ic”. Complex acid compounds have oxygen in them.

please help me..........​

Answers

Answer:

4/6

6/9

8/12

Explanation:

What is Jadi? is it goat? what language is Jadi?

Other Questions
Heidi (39 kg) is walking her tiny chihuahua, Chaxi (5.60 kg), on the sidewalk. To encourage Chaxi along, Heidi pulls forward with a force of 9.55 N. Identify the correct reaction force in response to Heidis action force.a. The friction is less than 660 N since the beam can be moved at a constant velocity. b. There is no friction acting on the beam since it is accelerating. c. The friction is equal to 660 N since the beam is not accelerating. d. The friction is greater than 660 N since the beam is not in equilibrium. What have people done to help stop further desertification?A.planted sturdier treesB.planted more grassC.done more farmingD.nothingI don't have a lot of points sorry Which like is the Skew to RQ. (hint not MN) Help!!! Worth 12 points !!!! Ill mark brainliest!!! i have to do these sentences into passive voice somebody help me ASAPThe teacher is correcting the tests.He must give you the money.Tom is watching TV.How can i learn french?My friends will throw a party.thanks. What need contributed to the rise of feudalism? O Surplus food O Taxes O Disease O Protection I NEEDA KNOW IF IM RIGHT , IDK HELP Which of following are coding languages used in controlling a robot? *A. ScratchB. B/B--C. C/C++D. Robot Z Find the equation for a line passing through (2,1) and (0,4). (standard form) Will give Brainliest X/4-14=9what is x? If roots of a quadratic equation are real and equal, then which of thefollowing options is true? The seven Principles are...Emphasis, Unity, Rhythm, Movement, Size, Balance, PatternEmphasis, Unity, Shape, Movement, Value, Balance, PatternEmphasis, Unity, Texture, Movement, Proportion, Balance, PatternEmphasis, Unity, Variety, Movement, Proportion, Balance, Pattern from where did pop art draw it's subject? What is the value of x in the figure below? In this diagram, ABD ~ CAD. B 13 D3 A. 16 B. 208 C. 39 D. 48 E. 13/16 F. 139 The sum of three numbers is 123. The third number is 3 times the second. The second number is 8 less than the first. Whatare the numbers? Refer to the diagram the equilibrium price and the quantity in this market will be : A: $1.00 and 200 B: $1.60 and 200 C: $.50 and 130 D: $1.60 and 290 Solve the equation for y.3x + jy= 7 The two types of attack on an encryption algorithm are cryptanalysis, based on properties of the encryption algorithm, and _________ which involves trying all possible keys. Which of the following best completes the diagram?private correspondenceclassroom discussionscongressional hearingsprint journalism ! NEED HELP ASAP !what is the domain of the function below? (1,3) (2,5) (3,7) (4,9)***SEE PICTURE***