The molar mass of NaCl is 58.44 g/mol. What is the molarity of a solution that
contains 120 g of NaCl in 0.750 L of solution?
0.649 M
3.00 M
2.74 M
2.05 M

Answers

Answer 1
3:00m cu of the current in electrical engineering and electrical toques

Related Questions

What is an orbital? How does it differ from an orbit?

Answers

Answer:

An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion. An orbital can simply be defined as space or the region where the electron is likely to be found the most.

Explanation:

Answer:

An orbital on the other hand is simply the probable area where one can expect to find the maximum density of electron presence within an atom. An orbit on the other hand is simply present in a body with a certain mass, while an orbital exists for an electron as well as an atom.

Thus, these are the simple differences between Orbit and Orbitals. It is important to know the major differences, you can check out the differences between Orbit and Orbitals below:

Differences between Orbit and Orbitals

Orbit Orbitals

An orbit is the simple planar representation of an electron. An orbital refers to the dimensional motion of an electron around the nucleus in a three-dimensional motion.

It can be simply defined as the path that gets established in a circular motion by revolving the electron around the nucleus An orbital can simply be defined as the space or the region where the electron is likely to be found the most.

The shape of molecules cannot be explained by an orbit as they are non-directional by nature. The shapes of the molecules can be found out as they are directional by nature.

An orbit that is well-defined goes against the Heisenberg principle. An ideal orbital agrees with the theory of Heisenberg’s Principles.

Thus, these are the major differences between Orbit and Orbitals.

Explain cell division in multicellular organisms?

Answers

Answer:

the divide through osmosis of mitosis or sum

Explanation:

Answer:

In multicellular organisms, cell division aids in the formation of gametes, which are cells that combine with others to form sexually produced offspring. For growth to occur in living organisms, the number of cells have to increase through cell division until it reaches its maximum size. The human body also repairs injuries by means of cell division.

I hope this answer helps you find your answer! Have a great day! :)

need help with physical changes

Answers

Answer:

I give u three in explanation

Explanation:

Crushing the can, stomping on the can, and squishing the can

what is an example of a chemical change that occurs during weathering

Answers

Chemical weathering occurs when water dissolves minerals in a rock, producing new compounds. This reaction is called hydrolysis. Hydrolysis occurs, for example, when water comes in contact with granite. Feldspar crystals inside the granite react chemically, forming clay minerals.

Answer:

Hydrolysis is a chemical wheathering process that may affect silicates and carbonates minerals. an example of such a reaction in which water reacts with a silicates minerals is the following: Mg2SiO4 + 4H2O ⇄ 2 Mg(OH)2 + H4SiO. olivine (forsterite) + water ⇄ brucite + silicic acid.

Explanation:

What is the molarity of a solution
made by dissolving 18.9 g of
ammonium nitrate (NH4NO3) in
enough water to make 855 mL of
solution?
Molar Mass N: 14.01 g/mol
Molar Mass H: 1.008 g/mol
Molar Mass O: 16.00 g/mol

Answers

Answer:

Molarity = 0.28 M

Explanation:

Given data:

Mass of NH₄NO₃ = 18.9 g

Volume of solution = 855 mL (855mL × 1 L/1000 mL = 0.855 L)

Molarity of solution = ?

Solution:

Number of moles of NH₄NO₃:

Number of moles = mass/molar mass

Number of moles = 18.9 g/ 80.043 g/mol

Number of moles = 0.24 mol

Molarity:

Molarity = number of moles of solute  / volume in L

Molarity = 0.24 mol /0.855 L

Molarity = 0.28 M

Answer:

0.28

Explanation:

:D

Calculate the maximum mass of aluminium which can be extracted from 10 kg of
aluminium oxide

2AlO3+ 3C ----->4Al + 3CO2

Answers

Answer:

Hrishikesh. bshjsjbd. jwjjja

For the cold pack shown below, the temperature on the outside surface has dropped considerably from its initial temperature of 25 °C. Which of the following provides the best explanation for this temperature decrease?

Answers

Answer:

The correct answer is D

Explanation:

In an endothermic process, energy travels from the surroundings into the system. The decrease in the temperature on the outside of the bag indicates that energy has moved from the surroundings into the system.

The other answers are incorrect. A bag cannot release “cold” into the surroundings since cold refers to the absence of heat. The surroundings become colder when heat is removed. Option B is incorrect because the cooling is due to the cold pack absorbing heat energy from its surroundings. Option C is incorrect because a cold pack absorbs heat energy from the surroundings, not vice versa.

The surroundings are losing energy and the thermometer is measuring the temperature of the surroundings as the cold pack shows an endothermic process. Therefore, Option (D) is correct.

What is an endothermic reaction?

Endothermic reactions are those in which the reactants absorb heat energy from their surroundings to form products. Endothermic reactions reduce the temperature of their surroundings and create a cooling effect. Physical processes can be endothermic in nature as well, for example, ice cubes absorb heat from their surroundings to form liquid water.

Endothermic reactions include the making of chemical bonds through the absorption of energy from the surroundings. On the other hand, exothermic reactions are in which the liberation of heat energy is generated from bond breakage.

The temperature of the cold pack is lower than the temperature of the surroundings. So the heat energy will be traveled from the surroundings to the cold pack.

Therefore, the temperature of the surroundings will fall as heat transfers to the cold pack.

Learn more about endothermic reactions, here:

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12. Draw the lewis structure for the element to help you answer the question *

Answers

Answer:hope it helps

Explanation:

BRAINLIEST!! PLZ HELP

Answers

Answer:

1.0 is Answer

Explanation:

May be this is helpful!

Explain Joule's law in your own words. pls help

Answers

Answer:

Joules first law is a law that expresses the relatioship between heat that is generated and the current flowing heat thats through a conductor. The second law says that internal energy is independent of volume and pressure, depending only on temperature!

Explanation:

What type of energy is caused by positive and negative charges in matter

Answers

Answer:

Static electricity is the result of an imbalance between negative and positive charges in an object. These charges can build up on the surface of an object until they find a way to be released or discharged.

Explanation:

I’m pretty sure it’s static electricity

7 Ba(ClO3)2
How many oxygen atoms are shown?

Answers

3 times 2 is 6 so there are 6 oxygen atoms

What happen when? sodium oxide reacts with HCL​

Answers

Answer:

Sodium oxide reacts exothermically with cold water to produce sodium hydroxide solution. A concentrated solution of sodium oxide in water will have pH 14. ... For example, it reacts with dilute hydrochloric acid to produce sodium chloride solution.

does something that is hot have more thermal energy than something that’s cold?

Answers

Answer:

Yes it does because the atoms/molecules are moving faster than they are in a cold substance.

Explanation:

Aluminum metal reacts with hydrochloric acid to produce solid aluminum chloride and hydrogen gas. how many moles of aluminum are needed to produce 1.2 moles of hydrogen gas?

Answers

Moles of Aluminum needed : 0.8

Further explanation

Given

1.2 moles H₂

Required

moles of aluminum

Solution

The reaction coefficient in a chemical equation shows the mole ratio of the components of the compounds involved in the reaction (reactants and products)

Reaction(balanced equation)

2Al + 6 HCl = 2AlCl₃ + 3H₂

From the equation, mol ratio of Al : H₂ = 2 : 3, so mol Al :

= 2/3 x mol H₂

= 2/3 x 1.2

= 0.8 moles

16.
Magnesium reacts with hydrochloric acid according to the equation below.
Magnesium bertindak balas dengan asid hidroklorik mengikut persamaan berikut.
Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)
What is the volume of hydrogen gas produced at room condition if 0.6 g of
magnesium is added to the excess of sulphuric acid?
[Relative atomic mass : Mg = 24 : molar volume = 24 dmº mol' at room condition]
Berapakah isipadu gas hidrogen yang dihasilkan pada keadaan bilik jika 0.6 g
magnesium ditambahkan kepada asid hidroklorik berlebihan."
[Jisim atom relative:Mg = 24 : isipadu molar = 24 dm mol! pada keadaan bilik]
A 0.6 cm
B 6.0 cm
C 60.0 cm
D 600 cm​

Answers

I’ll say the answer is 6.0

Explain why no experiment is a failure.

Answers

Every experiment is a learning experience, you learn from the mistakes you made.

Answer:

No experiment is a failure, because anytime you mess up, you learn from your mistakes and when you try the experiment again you can fix what you messed up on last time.

PET plastic # 1 is used in water bottles and pop bottles. Why should they be recycled but not be reused?

Answers

They should be recycled but not reused because the "repeated use increases the risk of leaching and bacterial growth." Also, recycling PET plastic "results in reduced energy consumption, lower cost, and reduced environmental impact."

Magnetic Quantum Number tells you what? how many orbitals are in s, p ,d?

Answers

The number of orbitals in a shell is the square of the principal quantum number: 12 = 1, 22 = 4, 32 = 9.

There is one orbital in an s subshell (l = 0), three orbitals in a p subshell (l = 1), and five orbitals in a d subshell (l = 2). The number of orbitals in a subshell is therefore 2(l) + 1.

PLEASE ANSWER QUICK! 50 POINTS!!!!
How does the structure of amino acids allow them to form a polypeptide?

Options:
A. Each amino acid has an amino group and a carboxyl group.
B. Each amino acid has a hydrogen atom and a carboxyl group.
C. Each amino acid has a carboxyl group and an R group.
D. Each amino acid has an R group and a hydrogen atom.

Answers

Answer:

A. Each amino acid has an amino group and a carboxyl group.

Answer:a

Explanation:

Plzzzzz helppppp it’s due already I’ll mark Brainly

Answers

Is it too late to answer?

How does Cyanoacrylate compare to the elements that make it up?

Answers

Answer: The elements of the cyanoacrylate are different as compared to the main cyanoacrylate.

Explanation:

The cyanoacrylate is a adhesive water based substance. It is used for developing fingerprints by fuming method. It is the acrylic monomer which has property to develop into a plastic form after application another of its composition is the acrylic resin which imparts adhesiveness to the cyanoacrylate.

A gas with a volume of 2 L at 25°C is placed into a container that is 4 L. What is the new temperature of the gas?

Answers

Given :

A gas with a volume of 2 L at 25°C is placed into a container that is 4 L.

To Find :

The new temperature of the gas.

Solution :

Since, their is no information regarding pressure. We will assume that pressure is constant.

Now, we know when at constant pressure, volume is directly proportional to volume.

[tex]\dfrac{V_1}{V_2}=\dfrac{T_1}{T_2}\\\\\dfrac{2}{4} = \dfrac{25 + 273 }{x}\\\\x = 2 \times ( 25 + 273 )\\\\x = 596\ K[/tex]

Therefore, the new temperature of the gas is 596 - 273 K = 323  K.

which term refers to the condition that exists when no over all change in concentration results from diffusion?

a. concentration
b. osmosis
c. equilibrium
d. randomness​

Answers

Answer:

a.cocentration es la respuesta

When can I use ideal gas law?

Answers

Answer:

The ideal gas law can be used in stoichiometry problems in which chemical reactions involve gases. Standard temperature and pressure (STP) are a useful set of benchmark conditions to compare other properties of gases. At STP, gases have a volume of 22.4 L per mole.

what evidence is there of energy release after chemical reaction

Answers

Answer:

loss of mass

Explanation:

your welcome :)

GUYSS JUST ONE QUESTION PLEASE HELPPP!!!!!!

Answers

Explanation:

done

..................

Li²O, # of Elements and Atoms ​

Answers

Answer:Lithium atomic orbital and chemical bonding information. There are also tutorials on the first thirty-six elements of the periodic table includes: Li²O

Dry ice changes from a solid to a gas in a process known as A. Melting B. Freezing C.sublimation

Answers

Answer:

c

Explanation:

solid to gas directly

A 0.200 M NaOH solution was used to titrate a 18.25 mL HE
solution. The endpoint was reached after 31.20 mL of titrant
were added. Find the molar concentration of the original HF
solution.

Answers

Answer:

M₂ = 0.34 M

Explanation:

Given data:

Molarity of NaOH =M₁ =  0.200 M

Volume of HF =V₂=  18.25 mL

Volume of NaOH added = V₁ = 31.20 mL

Molarity of HF solution = M₂ = ?

Solution:

M₁V₁  =  M₂V₂

by putting values,

0.200 M × 31.20 mL = M₂ × 18.25 mL

M₂ = 0.200 M × 31.20 mL /  18.25 mL

M₂ = 6.24 M.mL / 18.25 mL

M₂ = 0.34 M

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