1. Atomic mass of 12 and 6 neutrons what is the atomic number?

Answers

Answer 1

Answer:

The atomic number would be 12.

Explanation:

A neutral atom of Carbon-12 contains six protons, six neutrons, and six electrons.


Related Questions

What is the molarity of a 75.0 mL solution that contains 0.225 g of
potassium nitrate?

Answers

Answer:

M=0.0297M

Explanation:

we know that molarity equals number of mole of solute over the volume of solution.

M=n/V but n=m/M

n=0.225g÷101g/mol =0.00223mol

M=0.00223mol/0.075l

M=0.0297M

Answer:

0.0297M

Explanation:

We will use the formula M= moles of solute/lites of solution.

First we need to figure out the Moles of the solute, to get this we first need the molar mass of KNO3 (potassimum nitrate).

The Molar Mass of potassimum nitrate is 101.103 g/mol
K - 1 x 39.09
N - 1 x 14.006
O - 3 x 15.999
KNO3 - 101.103 g/mol

Now we get the moles of the solute by doing.
0225g/ 101.103g/mol = 0.00223 mol

Put the answer into the orginal equation to get 0.00223mol / 0.045 L
Which equals to 0.0297M. This is also the correct amount of significant figures.

A sugar crystal contains approximately 1.4×1017 sucrose (C12H22O11) molecules. What is its mass in milligrams? Express using 2 sig figs

Answers

Answer:

Our process would be just turning the molecules of sucrose to the moles by dividing using Avogadro's number (6.02 x 10^23), which will give us the moles we need. In order to find the mass of the sucrose, you have to multiply the moles by the molar mass of sucrose in order to find the mass, and then multiply by it 1000 to change it to mg.

Here are the formulas:

Number of moles = Number of molecules / Avogadro's number

Mass = Moles x Molar mass

Number of moles = (1.4 x 10^17) / (6.02 x 10^23) = 2.3255814 x 10^-7 moles

Now that we have the moles, we can multiply them by Sucrose's molar mass, which can be calculated by using the masses listed in the periodic table.

Carbon's Molar Mass = 12g/mol (There are 12 atoms of Carbon in sucrose)

Hydrogen's Molar mass = 1.01g/mol (22 atoms of Hydrogen in sucrose)

Oxygen's Molar mass = 16g/mol (11 atoms of oxygen in sucrose)

Now we just add them together:

((12)x(12)) + ((1.01)x(22)) + ((16)x(11)) = 342.22g/mol is the molar mass of Sucrose

Now back to the question, you multiply the moles of sucrose by its molar mass to get the mass in grams

(2.3255814 x 10^-7) x (342.22) = 0.0000796 grams

Now to get it in milligrams, you multiply the answer above by 1000

0.0000796 x 1000 = 0.079 mg (already in 2 sig figs)

Therefore there are 0.079 milligrams of sucrose in the sugar crystal.

The mass of sucrose molecules is  0.079 milligrams .

How is mass calculated from number of molecules?

To calculate mass of a substance wherein number of molecules is given, initially number of moles is obtained.

number of moles= number of molecules/Avogadro's number

=1.4×10¹⁷/6.022×10²³

=2.234×10[tex]^-7[/tex]

Now the mass is calculated  by multiplying number of moles into molar mass of sucrose

=2.234×10[tex]^-7[/tex]×342.22

=795.31 ×10[tex]^-7[/tex] g

=0.079 mg.

The mole concept is a convenient method for expression of amount of substance in chemical applications.It is mainly focused on the quantity  of mole which is a count of large number of particles.One mole of  any substance is equal to the Avogadro's number .

It is useful for measuring products of chemical reaction. It is the basis of stoichiometry and expresses amount of reactants and products  which are formed and consumed during the course of chemical reaction.

Learn more about mole concept ,here:

https://brainly.com/question/22540912

#SPJ2

How quickly the electron are moving through the circuit
A.Resistance
B.voltage
C.current

2.The strength with which electrons are pushed through the circuit?
A.Resistance
B.voltage
Current

Answers

Answer:

B

Explanation:

because the electrons are moving fast

B because electrons move very quickly

Balance the following equation: __Na+__H₂O ➞ __NaOH+__H₂ *

Answers

Answer:

4 4 8 4 is the balanced equation

[EARTH SCIENCE]

Hi, can anyone help please? Thank uuuu!!! :D

The relationship between the average distance of a planet from the sun and the planet’s orbital period is described by the....

A. Law of ellipses.
B. Law of equal areas.
C. Law of motion.
D. Law of periods.

Answers

Answer:

c. law of motion

Explanation:

I think I hope it helps

H2O decomposes to hydrogen and oxygen as describe in the
following reaction:
2H20 (1) ► 2H2 (9) + O2 (9)
What is the mole fraction of hydrogen gas in the products?
a 0.5
b 0.33
C 0.4
d 0.67

Answers

When a gas is collected over water, one must subtract the vapor pressure of water from the total pressure in order to find the pressure of the gas itself. Thus, 1.05 atm - 0.0278 atm = 1.0222 atm = pressure of the O2 gas.

PV = nRT and solve for n to determine moles of O2 collected.
n = PV/RT = (1.0222 atm)(0.5 L)/(0.0821 Latm/Kmol)(296 K) note the use of Kelvin for temperature.
n = 0.02103 moles O2
mass of O2 = 0.02103 moles x 32 g/mole = 0.67 grams (to 2 significant figures)

Which element are in the compound CoCI2?

Choose all correct answers.

Answers

Answer:

the answer is cobalt and chloride

copper cannot be used as an anode in electrolysis of water​

Answers

Answer:

I hope this will help

Explanation:

Copper is purified by electrolysis . Electricity is passed through solutions containing copper compounds, such as copper(II) sulfate. The anode (positive electrode ) is made from impure copper and the cathode (negative electrode) is made from pure copper.

Page. 5. What is the position of alkali metals in the Modern periodec table. ​

Answers

Question:-

What is the position of alkali metals in the Modern periodic table.

Answer:-

They are placed in the IA group, which is the first column on the left side of the periodic table.

Explanation:-

Alkali metals are placed on the first column (IA)

(lithium, sodium, potassium, rubidium, cesium, francium)

HELP!!!!! I WILL GIVE BRAINLYEST write a 250 word report on a extinct or endangered animal

Answers

Answer:

bro thats plagiarism

Explanation:

Can someone help me with this please

Answers

That is an ionic bond.

Explanation:

It has cations and anions

What is the volume, in liters, of 1.4 moles of CO2 gas at STP?

Answers

Answer:

22.4 L.

Explanation:

How many total atoms are present in the compound: Mg(OH)_2

Answers

Answer:

In the compond Mg(OH)_2, 20 atoms are present.

Explanation:

I NEED HELP!!!! URGENTLY!!!! I HAVE TO GET THIS DONE THIS WEEK!!!! WILL GIVE BRAINLIEST!!!!
1. You learned that waves in the ocean, sound waves, and light waves all have certain things in common. They all carry energy. The velocity, frequency, and wavelength of each is connected by the same equation. Which type of wave would you most want to learn more about? Why does it interest you? What would you want to find out about it? Write your answers in 2-3 paragraphs. (10 points) Would you like to know more about how waves in the ocean move, how sound travels, or how light works?

2. If you could somehow travel inside an atom and look around, what part of the atom would you want to look at? Why? What would you want to understand better as a result of your "travels"? Write your answers in 2-3 paragraphs. (10 points) Do electrons or the nucleus interest you more? What questions do you still have about how an atom works?

Answers

Answer:

Explanation:

1)  I personally would want to learn more about how the waves in the ocean move. About what causes high tide. What causes low tide. Why some waves are big and some small.  

I know it has something to do with the gravitational pull of the moon. But that is as far as my knowledge extends on the subject. I have always been fascinated with the secrets of the ocean and the secrets of space. To me learning, this is a little of both.

2)  The nature of the interaction between neutrons and protons in the atomic nucleus, which binds the nucleons together, is the biggest wonder in the inside of the atom that I would like to really know. Protons have a positive charge, but neutrons do not. What form of interaction between a charged particle and an uncharged particle is possible? That is what I expect to learn more about as a result of my explorations into the inner workings of the atom.

The inside of the atom is made up of the nucleus and electrons that travel about in orbits. The nucleus is made up of protons and neutrons. Electrons have a negative charge, protons have a positive charge, and neutrons have none. The nucleus is held together by electrostatic interaction between electrons and protons. The majority of the mass of an atom is made up of protons and neutrons.

I'm interested in finding out more about ocean waves travel. regarding the reason for high tide. what brings on a low tide. Although some waves become also large while others are smaller.

What are ocean waves?

Ocean waves seem to be alterations to the ocean's surface. They could be produced by water being moved by the wind, gravity, as well as other forces.

What are waves?

A disturbance that moves from one place to another across a medium has been referred to as a wave. As an illustration of a wave, think of a sinuous wave.

Personally, I'm interested in finding out more about ocean waves travel. regarding the reason for high tide. what brings on a low tide. Although some waves become also large while others are smaller I'm certain that the moon's gravitational force is somehow implicated. Because that is basically the extent of my expertise on the matter. The mysteries of the water and the mysteries of space have always interested me. I'm still learning, so this combines a bit of both.The largest enigma in the interior of the atom something I would really like to understand is the nature of the connection involving neutrons as well as protons in the nucleus of an atom, which holds the nucleons together. Neutrons just don't have a positive electrical charge, whereas protons do. What kind of interactions is conceivable between charged as well as uncharged particles. Through my investigations into the internal workings of the atom, I hope to understand more about it.

To know more about Ocean waves and waves.

https://brainly.com/question/8705558

#SPJ2

10 facts about “molecules”

Answers

Answer:

Explanation:

A perfect diamond is a single molecule made of carbon atoms.

DNA is a super long molecule that has information uniquely describing every human being.

When two or more atoms chemically bond together, they form a molecule.

They are very small in size.

They have space between them.

They are in constant random motion.

molecules move when Particles move rapidly in all directions but collide with each other more frequently than in gases due to shorter distances between particles.

In 1926, French physicist Jean Perrin received the Nobel Prize in physics for proving, conclusively, the existence of molecules.

Molecules can exist in free state because they are very stable.

The smallest particle of a compound capable of existing on its own is a Molecule-not a atom.

how many different elements are present in c6h12o6

Answers

Answer:

3 different elements are present in the compound.

Which answer is it for number 7

Answers

Answer:

The answer is I

The 4 one represents Solids coz in solids atoms are tightly packed

The drummer is the best performer. What is the noun in this sentence

Answers

Answer:

Performer if not I say drummer

let me know the answer!

Explanation:

drummer is the noun because a noun is a person place thing or idea

how many neutrons of atomic mass is 31 and atomic number is 12

Answers

[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]

As we know, Number of protons = Atomic Number

So,

Number of protons = 12

And, Atomic mass = Number of protons + Number of Neutrons (N)

therefore ~

31 = 12 + N

N = 31 - 12

N = 19

Number of Neutrons = 19

what is the relationship between plants soil and nutrients?

Answers

Answer:

Soil helps anchor plants and provides them essential elements of water and nutrients. Plants prevent soil erosion and provide organic matter.

Explanation:

Can anyone pls answerrrrt

Answers

Answer:

wdym

Explanation:

hmm

How many atoms are in 80.45 g of magnesium with explanation

Answers

Answer:

There are 1.9926 * 10 ^24 atoms.

Explanation:

M ( Mg ) = 80.45 g

We can find the molar mass of magnesium in the Periodic table:

M ( Mg ) = 24.31 g / mole

n = 80.45 g : 24.31 g/mole = 3.31 moles

N a ( Avogadro`s constant ) = 6.02 * 10 ^23

N = Na * n = 6.02 * 10 ^24 * 3.31 = 19.926 * 10 ^23

Which of following is not an ingredients for photosynthesis?

A. oxygen
B. carbon dioxide
C. light energy
D. water

Answers

Answer:

A. oxygen

Explanation:

Oxygen is the waste created after photosynthesis.

Answer:

oxygen

Explanation:

photosynthesis are for plants and plants don't need oxygen

One of the products when aqueous Na, CO, reacts with aqueous
Sn(NO3), is
O a. Sn(CO3)2
O b. CNO3
O c. NaSn.
O d. NaNO3

Answers

Answer:

NaNO3

balanced equation - Na2CO3 + Sn(NO3)2 → 2NaNO3 + Sn(CO3)

what is the difference between hypertonic and hypotonic

Answers

Answer: A solution will be hypertonic to a cell if its solute concentration is higher than that inside the cell, and the solutes cannot cross the membrane. If a cell is placed in a hypotonic solution, there will be a net flow of water into the cell, and the cell will gain volume.

Picture:
Meaning of hypertonic: (1): having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid. (2) of or in a state of abnormally high muscle tone.

2) Nitrogen gas will react with hydrogen gas to produce ammonia, NH3, How many
moles of hydrogen gas are required to produce 0,86 moles of NH3?

Answers

Answer:

12 grams of hydrogen gas

and 56 grams of nitrogen gas

The molar mass of ammonia is 17 g/mol.

68 grams of ammonia corresponds to  

17g/mol

68g

=4moles

4 moles of ammonia will be obtained from  

2

4×1

=2  moles of nitrogen and  

2

4×3

=6  moles of hydrogen.

The molar masses of nitrogen and hydrogen are 28 g/mol and 2 g/mol respectively.

2 moles of nitrogen corresponds to 2×28=56  grams.

6 moles of hydrogen corresponds to 6×2=12  grams.

11.
What is the missing product from this reaction?
32 32
15P → 16S +
a.
4.
2 He
b.
0
10
C.
0
or
d.
0
le
e.
0
1P

Answers

Answer:

good times

Explanation:

always nedded

Here the nuclear decay of phosphorous to give S-32 is an example of beta-decay. Hence, the emitted particle is an electron. Thus, option b is correct.

What is beta decay ?

The heavy unstable radioactive isotopes undergo nuclear decay by the emission of alpha or beta particle. Thus, there are mostly two types of decays, alpha decay and beta decay.

In alpha decay, the isotope emits a helium nuclei. Hence, mass number decreases by 4 units and atomic number decreases by 2 units. In beta decay, mass number does not change but atomic number increases by 1.

Here, P-32 undergo beta -decay by emitting an electron to form S -32. Hence, atomic number is increased by one. Therefore, the mission product is an electron option b.

Find more on beta- decay:

https://brainly.com/question/12448836

#SPJ6

Polyester is a synthetic material used for many different purposes. It is produced from petroleum and natural gas. Producing polyester from these natural resources requires many steps and uses other chemicals that are potentially harmful. Polyester production also requires a lot of energy. Although polyester is not biodegradable, it is easily recyclable.

Which statement about synthetic materials is best supported by the example of polyester?
A.
Using synthetic materials has a negative impact on the environment, but using natural materials does not.
B.
Synthetic materials created from petroleum and natural gas are difficult to produce and to recycle.
C.
Materials that are created from natural resources affect the environment more than those that are not.
D.
Producing certain synthetic materials could have a greater environmental impact than disposing of them.

Answers

Answer:

A. Producing certain synthetic materials could have a greater environmental impact than disposing of them.

Explanation

I just did this question and got it right.

You know that a circuit is a path along which electrical charges can flow. In this activity, you are going to illustrate that the flow of electricity needs a closed circuit. Your task is draw the wires that connect these objects in order to create a closed circuit. In the space provided, write one sentence that identifies why this circuit allows electrical charges to flow. Be sure to include each object in your answer.

Answers

Answer:

I cant do it for you but to help you I can tell you this The charged particles can move only when there is a complete conducting pathway (called a 'circuit' or 'loop') from one terminal of the battery to the other.

Explanation:

Which are included in the inflammatory response? Select three options.painswellingantibodiesmucusredness

Answers

redness, swelling, and pain
Other Questions
explain how wavelength is related to the energy of a wave Children's are the future of the country . why Elizabeth earned $150 a week tutoring . If he saved $75, what percent of the money he earned did he save PLEASE HELP WHAT IS THE DOMAIN AND RANGE OF THIS GRAPH Help for points and Ill give brainliest to correct! PLEASE HELP I"LL GIVE BRAINLIST!!?!??!??!??? The Panama Railroad was the first _________ railroad.intercontinentalintracontinentaltranscontinentalcontinental What factor played an important role in the Revolutions of 1848?Immersive Reader(1 Point)a. Anti-Colonialismb. Anti-Communismc. Nationalismd. Neoconservatism why was Washington the first president?on egde... Simplify 30 3 of [37-{30(13-20+12)}-26] Which word best describes the Continental (Rebel) Army?1. Young 2. well trained 3. passionate 4. ragtag what is the advantage of plasmolysis to the terrestrial plants? The length of a retangle garden is 4 yards more than its width The area of the garden is 60 square yards Find the with of the garden Calculate the molar mass of NH4NO3. Molar mass of NH4NO3 = g/mol. What is one major measure of economic growth? tom drank 3/4 of a cup of water in 2/3 of a minute. at this rate how much water did he drink in a full minute PLEASE HELP Triangle UVW is dilated by a scale factor of 6 to form triangle U'V'W'. Side W'U'measures 18. What is the measure of side WU? Pls help me !!!!!!!! What was khilafat movement? /14 Which strategy is important to apply when answering short-answer or essay questions? Compare items in a list. Look for key words in the question. Identify words in the question that act as qualifiers. Answer the question by first covering up the answers. Hannah makes $46,675 per year, how much will she make each paycheck if she is paidweekly?