Help ASAP!!!! Plz!!!!!!!

Help ASAP!!!! Plz!!!!!!!

Answers

Answer 1
The atomic number,protons and electrons are all the same! The neutrons you just add by 1 to the protons. The atomic mass is at the bottom. For example- for oxygen the atomic #,protons, and electrons would all be 8. The neutron would be 9 and the atomic mass is 15.999.

Related Questions

What happens to the particles of a liquid when energy is removed from them?

A. The motion of the particles increases and the distance between the particles increases.

B. The motion of the particles increases and the distance between the particles decreases.

C. The motion of the particles decreases and the distance between the particles increases.

D. The motion of the particles decreases and the distance between the particles decreases.

Answers

Answer:

b im pretty sure it is  b

Explanation  b  The motion of the particles increases and the distance between the particles decreases.

The motion of the particles decreases and the distance between the particles increases, the correct option is C.

What are different states of matter?

The matter is anything that has mass and occupies space.

Matter can exist in four different states: solid, liquid, gas, and plasma.

By examining the arrangement of molecules, it is possible to comprehend the characteristics of the many forms of matter.

The state of a solid turns to a liquid when it is heated past its melting point.

A liquid turns into a gas when it is heated past the point at which it vaporizes.

Solids have a distinct shape and dimension and are densely packed.

Liquids fill the container's space and are loosely packed.

Gas has a large intermolecular distance and is not stiff.

When energy is removed from the particles of a liquid, the speed gets slowed, and so the motion decreases, as the motion is limited they become packed and the distance between them decreases, and the intermolecular forces increases.

To know more about Different states of matter

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what is the ionic formula for potassium and chlorine

Answers

Its chemical formula is KCl, consists of one potassium (K) atom and one chlorine (Cl) atom.

3.4 moles of CO to liters?

Answers

3.4 moles of CO to liters is 76.2

Answer:

76.2 L of [tex]CO_{2}[/tex]

Explanation:

Converting the unit of moles to liters is very easy if you know the value of a mole to a liter. Remember that 1 mole is equivalent to 22.413962 L.

Step 1:

3.4 mol [tex]CO_{2}[/tex] x 22.413962 [tex]\frac{liters}{mole}[/tex] = ?

Step 2:

Cancel out the moles.

Step 3:

If you multiply 3.4 by 22.413962, the answer is 76.2

Step 4:

Don't forget to put the units every time you answer. So the answer is: 76.2 L of [tex]CO_{2}[/tex]

When calculating percent error, the accepted value is in the denominator
True or false

Answers

Answer:

True

Explanation:

The answer is TRUE

Have a nice day / night! :)

An organism that has two identical alleles (like two capital “T’s” or two lowercase “t’s” for example) is called

Answers

Answer:

h, o, m, o, z, y, g, o, u, s

Explanation:

h, o, m o z y g o u s- T, T or t, t

H, e, t e r o z y g o u s- T, t

I put the commas there so it would let me submit, because it said I put bad words for some reason...

ANSWER WITHOUT THE COMMAS LOL

Electrons will pair up in an orbital only when

Answers

Answer:

All orbitals in the same sub level have one electron

Explanation:

All orbitals in the same sub level have one electron

What is the last energy level of N? Mg?

Answers

Answer:

2

3

Explanation:

To infer the last energy of the given atoms, we need to write their electronic configuration:

For N = 1S² 2S² 2P³

     Mg  = 1S² 2S² 2P⁶ 3S²  

The energy levels are usually designated as;

   n = 1

   n = 2

   n = 3

   n =4

For N, the last energy level is 2

     Mg, the last energy level is 3

We can also determine this number by the periods the atoms can be found.

Do 2. A student determines that there are 1.3 x 1025 molecules of an unknown
substance in a 968 g sample. Which compound most likely represents this
unknown substance?
CO
CIO
2)
CO2
N203
CLEAR ALL

Answers

Answer:

The correct option is;

CO₂

Explanation:

The given information are;

The number of molecules in the substance = 1.3 × 10²⁵

The mass of the substance = 968 g

Therefore, we have;

The number of molecules in one mole of a substance = 6.02 × 10²³

The number of moles present = (1.3 × 10²⁵)/(6.02 × 10²³) ≈ 21.595 moles

Therefore, 968 g = 21.595 moles

1 mole = 968/21.595 = 44.826 g

The mass of one mole of the substance = 44.826 g

Therefore the mass of one mole of the substance is closely related to the mass of one mole of CO₂ which is 44.01 g/mol.  

The correct option is CO₂

The calculation is as follows:

The number of molecules in one mole of a substance should be = 6.02 × 10²³

And,

The number of moles present is

= (1.3 × 10²⁵)/(6.02 × 10²³)

≈ 21.595 moles

Now

1 mole = 968/21.595 = 44.826 g

The mass of one mole of the substance = 44.826 g

So,  the mass of one mole of the substance is closely related to the mass of one mole of CO₂ i.e.  44.01 g/mol.  

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what is the mass of 10 moles of helium​

Answers

Answer:

The mass of 10 moles of helium is: 2.5

Which element is this.Its shiny,Is solid at room temperature, has atoms with two valence electrons?A:Lithium B:Strontium C:Aluminium D:Silicon

Answers

Answer:

Strontium

Explanation:

STRONTIUM

Strontium is a chemical element that is non radioactive and its occur naturally. It is a shiny and silvery white metal that have atomic number of 38 and it belong to group 2 member of the periodic table which is why it have two valence electrons. It is a solid metal at room temperature.

About 99% of Strontium is found in bones. It help to make new bones in humans by replacing the old bones.

Therefore, it is strontium.

Strontium is the element which is shiny, solid at room temperature and has two electrons in its outermost shell.

The atomic number of Strontium is 38. In the first shell, there are two electrons, in the second and fourth shell has space for 8 electrons so these shells are filled with electron whereas third shell has 18 electrons and the fifth shell has 2 electrons. Strontium belongs to second group i.e. alkaline earth metals due to which it has two valance electrons in its outermost shell.

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Need help plz fast it’s science

Answers

Answer:

Photosynthesis, cytoplasm, cell wall, plastid, mitochondrion

Explanation:

An object accelerates 16.3 m/s2 when a force of 4.6 Newton’s is applied to it. What is the mass of the object?
A= .28 kg
B=74.98
C=3.8 kg
D= just to heavy to calculate

Answers

Answer:

A=0.28kg

Explanation:

FORCE=MASS * ACCELERATION

4.6=m*16.3

Then make m the subject.

m=4.6/16.3

m=0.28kg

8.
188 W
188
75
Re
+
74

Answers

The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. The size of the forces on the first object equals the size of the force on the second object. The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs. 

A student observes that instant tea dissolves more rapidly in a cup of 250 mL of stirred hot water than in a cup of 250 mL of stirred cold water. Which is the most relevant hypothesis that the student could develop based on this observation?

A.
Volume affects the rate that instant tea dissolves in a solvent.
B.
Temperature affects the rate that instant tea dissolves in water.
C.
Stirring affects the rate that instant tea dissolves in water.
D.
Pressure affects the rate that instant tea dissolves in water.

Please answer my question!

Answers

Answer:

B

Explanation:

In this question, there is no mention of pressure, so we can eliminate answer D. In both cups, it mentions they contain 250 mL of water and both are stirred, so these would be constants. The only difference between the cups is temperature, so temperature must affect the rate that instant tea dissolves in water. Therefore the answer is B.

Rain exist in which phase

Answers

Answer:

WATER!!!!!

Explanation:

hope it helps

1. A pile of boxes exerts a force of 500 newtons downward on the floor. The boxes are not in motion. What is the normal force on these boxes?

2. Norman drags a stubborn dog by his leash with a force of 200 newtons. The dog is slowly moving towards Norman. What do you know about the force exerted by the dog?

3. A baby grand piano sits in a music room. The piano exerts a force of 3500 newtons downward. Isaac tells his friends that he is strong enough to lift the piano off the floor. How much force will he have to use to lift the piano?

4. Ms. Holt is dragging a box of assessments across the floor using a force of 70 newtons. The frictional force acting against the box is 50 newtons. What is the net force on the box?

5. A bicycle is sitting motionless in the driveway. What is the net force acting on this bike?

6. Maria drops a box that exerts of force of 300 newtons downward on a table. The normal force acting on the box from the table is 250 newtons. What will happen to the table and the box? What is the net force of the box?

7. Anna is riding her bike, moving at a constant velocity of 3 miles per hour to the south. She is using 200 N of force to pedal her bike. A gust of wind blowing in the same direction she is traveling suddenly exerts a force of 20 Newtons on her. What will happen to her motion? (hint: Use the term accelerate OR decelerate in your answer.)

8. Mrs. Fedde is riding her bike, moving at a constant velocity of 5 miles per hour to the north. She is using 300 N of force to pedal her bike. A gust of wind blowing in the opposite direction she is traveling suddenly exerts a force of 50 Newtons on her. What will happen to her motion? (hint: Use the term accelerate OR decelerate in your answer.)

Answers

5000 for sure hope this helps you

How to separate these pure substance?if it is not possible, please write cannot be separate

Oxgen
Water
Gold
Carbon Dioxide
Carbon​

Answers

Answer:

Oxgen- cannot be separated

Water - chemical change

Gold - cannot be separated

Carbon Dioxide - chemical change

Carbon​ - cannot be separated

Explanation:

A pure substance, which can either be an element or a compound, contains only one type of such element or compound. In opposition to a mixture, pure substances cannot be separated by physical means.

- Elements as a pure substance cannot be separated because it contains only one type of atom. However, compounds contain two or more types of atoms, and hence, can only be separated into its individual atoms via chemical means.

In this question, oxygen (O2), Gold (Au) and carbon (C) are all elements and hence cannot be separated. Carbon dioxide (CO2) and water (H2O) are compounds because they contain two different atoms respectively, hence, can be separated into individual atoms.

what mass of gold, Au, contains the same number of atoms as 9.0 g of aluminum Al

Answers

Answer:

55.16 grams of gold contain same number of atoms as 7.72g AI contain

You find a clear gem that is made of one substance. What could you do to
identify whether the gem is a diamond?

Answers

Answer:

You could have a scratch test, fog test, break test, theres many tests you could perform to see if it is a diamond.

Explanation:

Valence electrons determine blank

Answers

Answer:

the element's chemical properties and whether it may bond with other elements.

Explanation:

Please answer it correctly and explain clearly

Answers

Answer:

i think that the children will inherit the brown eyes, it is the best answer since the other things cant be inherited and he dyed his hair blonde

Explanation:

Identify the choice that best completes the statement or answers the question.
Banana slugs live on the ground in moist forests of the Pacific Northwest. They consume and
break down a variety of materials, including small dead animals and rotting leaves. Which
term describes banana slugs?
O carnivores
O consumers
O decomposers
O producers
PLEASE HELP!!!

Answers

The answer would be decomposers

the ability for a substance to rust is
a. oxidation
b.rustability
c.magnetic attraction
d.reactivity

Answers

Answer:

i think it is letter b. rustability but not so sureeee

help please this is due at 2!!

Answers

Answer:

I believe the answer is C (3)

Explanation:

In an atom usually electrons number and protons number is equal.

Here lithium atom has three protons

So it has three electrons، too.

What is the decomposition of 2LiCIO3

Answers

Decomposition is AB —> A + B

2LiClO3 —> 2LiCl + 3O2

What is Arsenic cost per unit?

Answers

Answer:

arsenic costs $320 per 100g

Explanation:

When exposed to very high temperatures, metals like iron can be turned into fluids that flow and can be poured into molds. What happens within the iron to allow it to flow?

A) The energy of the solid decreases, and the particles begin to collide with high frequency

B)The energy of the solid increases, and the particles begin to slide past each other

C)The solids collide at an increasing rate until reaching equilibrium energy

D)The particles vibrate about equilibrium in an effort to minimize energy

Answers

Answer: B) The energy of the solid increases, and the particles begin to slide past each other.

Explanation:

The energy of the solid matter is required to be increased so that molecules of the solid matter get separated from each other and an transition from solid matter to liquid matter occurs. The liquid components of the matter will slide past each other as they have obtain energy for fluidity. The liquid iron can be molded into any shape and the energy decreases considerably.

An object with a mass of 1.2 g takes up a space of 2.4 mL. What is it's density?

Answers

Answer:

The answer is 0.5 g/mL

Explanation:

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

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

From the question we have

[tex]density = \frac{1.2}{2.4} \\ [/tex]

We have the final answer as

0.5 g/mL.

Hope this helps you

The formula for density is almost always expressed as grams per milliliter in chemistry. To find the density of this object, simply divide the number of grams by the number of milliliters.

Therefore, we get:

1.2g / 2.4 mL = 0.5g/mL

This results in a density of 0.5g/mL!

Can someone help me quickly?

Answers

The first one is correct :)

Which components are part of all scientific investigations? Check all that apply.

Answers

Answer:

Steps of a scientific investigation include 1. make observation

2. ask a question

3. form a hypothesis

4. test the hypothesis

5. analyze results

5 , drawing conclusions,

6. and communicating the results

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which is expression is equivalent to 1/51/2 A 6th grade class was presented with the following statement the amount of water on the surface of earth today is the same amount as 1000 years ago half of the class argued that the statement was true as the other half argued the statement was false, argue how you know your choice is correct Which question best relates to the point of view of a source?When was the source created?For whom was this source created?Does the source seem to have a bias?Where was the source first published? In 10a10d, choose Yes or No to tell whether the statement is correct Which phrase gives two processes scientists think move the Earth's lithospheric plates?pls answer correctly to earn Brainliestscience class btw Character is one factor used in determining credit worthiness -true-false How is computer programming useful in real life? Help me Bender Electronics buys keyboards for its computers from another company. The keyboards are received in shipments of 100 boxes, each box containing 20 keyboards. The quality control department at Bender Electronics first randomly selects one box from each shipment and then randomly selects 5 key boards from that box. The shipment is accepted if not more than 1 of the 5 keyboards is defective. The quality control inspector at Bender Electronics selected a box from a recently received shipment of keyboards. Unknown to the inspector, this box contains 6 defective keyboards.Round your answers to four decimal places. a. What is the probability that this shipment will be accepted? P(shipment accepted)= b. What is the probability that this shipment will not be accepted? P(shipment not accepted)= 27. Mrs. Smith bought stock valued at $142.00 per share and sold itfor $153.83. What was the percent of profit? Calculate the ratio of the mechanical energy at B and mechanical energy at a (eb,ea) and (ec,ea). What do these ratios tell you about the conservation of energy? A) is the mechanical conserved between a and b? explain B) is the mechanical energy conserved between b and c ?explain Washington D.C. Is a federal district, which comes under the authority of the Congress, and is therefore not a part of any of the states. B. Washington State is named after George Washington, the first president of the United States. C. This city also has Ford's Theater, the United States Botanic Garden, and a Madame Tussauds Museum that houses life-size wax models of famous Americans. D. There is an exact copy of the U.S. Capitol at Madison, Wisconsin, called the Wisconsin State Capitol. There are 81 cal in a 3/4 cup serving of chicken noodle soup how many calories are in a 2/3 cup serving? What performs more functions human cells or bacterial cells and why Please define these words.Artesian well:Water pressure:Zone of saturation:Porosity: Please tell me the answers to A, B, and C The ocean exploration institute has a submarine that is used to study patterns of fish moment the submarine started at the surface of the water and collected data at three different depths each time the submarine dove 40 feet down write an integer equation to model the situation and determine the lowest depth of the submarine Which element is this.Its shiny,Is solid at room temperature, has atoms with two valence electrons?A:Lithium B:Strontium C:Aluminium D:Silicon . John has two coupons to use at a clothing store. One is for $20 off and the other is for 20% off. John wants to purchase a shirt with one of the coupons and wants to pay the least amount that he can. Choose the answer that BEST describes the situation. * A rational function in the form ax^m+.../bx^n+... has a slant (oblique) asymptote when ________.(A.) a=b(B). m=n(C). m n Which sentence most accurately describes a common quality of Modernistplays?A. Many plays followed the forms of Classical tragedy.B. Playwrights rebelled against Puritan values.C. Themes were not as idealistic as in previous eras.D. The actors onstage were typically all male.