The Sulphate of x is XSO4 valency of x is

Answers

Answer 1

Answer: m mm

/lk ac

Explanation:


Related Questions

Which statement best describes John Dalton’s use of creativity in his work?

Answers

Answer:

c

Explanation:

8. In a chemical reaction, if the reactants are heated, the reaction usually
happens a) Faster
b) Slower
c) At the same rate

Answers

the reaction usually happens faster

help please I would really appreciate ​

Answers

Answer:

option C

Positive terminal of the cell connected with red

Explanation:

hope it may help you

The body's reaction to a change in the environment is called a response.
Please select the best answer from the choices provided
OT
OF

Answers

the first answer or “t” :)

There are on average 43 g of sugar and 355 mL can of soda please calculate the molarity of sugar in the can of soda the molar mass of sugar is 342.2 g/mol

Answers

Explanation:

Given :

Amount of solute - sucrose (C12H22O11) = 41 g

Amount of solvent -soda  = 355-mL

Molarity of the solution with respect to sucrose= ?

Molarity(M) is a unit of concentration measuring the number of moles of a solute per liter of solution. The SI unit of molarity is mol/L.

Formula to find the molarity of solution :

               Molarity =  

Amount of solvent is given in mL, let’s convert to L :

               1 L = 1000 mL

Therefore, 355 mL in L will be :

                   

               = 0.355 L

We have the amount of solute in g, let’s calculate the number of moles first :

       Number of moles (n) =  

Molar mass of C12H22O11 = 342.29 g/mol.

Therefore, n =  

               = 0.119 moles.

How many particles are in 54.5 g of aluminum? Show your work.
A. Convert the mass of aluminum to moles of aluminum. Molar mass of aluminum (Al) = 26.98 g/mol
B. Convert the moles of aluminum to particles of aluminum. There are 6.02 x 1023 particles/mol.

Answers

There are 1.216x10^24 particles in 54.5g of aluminum.

A. 54.5/26.98 = 2.02mols of aluminum

B. 2.02mols*6.02x10^23 particles/mol = 1.216x10^24

When a substance melts, evaporates or boils, which four of the following things are true for it's particles?
Select four answers.


A. Lose energy

B. Gain energy

C. Move more

D. Move less

E. Become further apart

F. Become closer together

G. Overcome the attractive forces

H. The forces between them hold them more in place

Answers

Answer:

B, C, E, G

Explanation:

B - As particles are heated, they gain heat energy (or thermal energy, Q) from whatever the source may be.

C - Thermal energy particles gain is converted into kinetic, and the more KE/kinetic energy particles have, the more energy they have to move around.

E - When particles have more energy to move around more, they slide and move past each other and create more space; hence, they become further apart.

G - Eventually, particles will have enough energy and will move around so much that the attracting forces holding them together in the first place will be lesser than the particle's energy to break free and move from the attractive forces.

Please mark me as brianliest :D

TIMED PLS HELP AND WILL GIVE BRAINLIST
Given the following reaction:

2 Al + 2 KOH + 4 H2SO4 + 22 H2O --> 3 H2 + 2KAl(SO4)2•12H2O

If you start with 8.3 mL of 9.9M sulfuric acid, what is the theoretical yield of alum?

Answers

Answer:

19.4 g of alum, will be its theoretical yield

Explanation:

The reaction is:

2 Al + 2 KOH + 4 H₂SO₄ + 22H₂O → 3H₂ + 2KAl(SO₄)₂•12H₂O

Let's determine the amount of acid.

M are the moles contained in 1 L of solution or it can be mmoles that are contained in 1 mL of solution

M = mmol /mL

M . mL = mmol

We replace: 8.3 mL . 9.9 M = 82.17 mmoles

We convert to moles: 82.17 mmol . 1 mol / 1000mmol = 0.082 moles

Ratio is 4:2

4 moles of sulfuric acid can make 2 moles of alum

By the way, 0.082 moles of acid may produce ( 0.082 . 2) /4 = 0.041085 moles.

We convert moles to mass:

Molar mass of alum is: 473.52 g/mol.

0.041085 moles . 473.52 g/mol = 19.4 g

Increasing the concentration increases the speed of reaction by... increasing the number of collisions between products increasing the amount of energy in the system increasing the number of collisions between reactants lowering the activation energy of the reaction

Answers

Answer: increasing the number of collisions between reactants

Explanation:

A reaction is possible due to collisions between the reactants to create products. If we increase the concentration of reactants then that means that we are increasing the molecules of the reactants which would give them more chances to collide and make products.

For instance, using a non-chemistry example, if there are few cars in a large city, the accidents there will be less because the cars will have such space that they wouldn't collide with each other. If the number of cars in the city is increased however, there is now less space and more chances for cars to collide.

What causes hurricane on Saturn?

Answers

Hurricanes on Saturn are caused by when the water clouds heat up and rise, causing storms (not too sure if this is the right answer, hope it helped).

Rob measures the solubility of three different salts in water at 22°C.

Which type of graph should he use to display his data?

Answers

Answer:

He should use a bar graph

Explanation:

Since this is a distinction between three very distinct categories a bar graph should be perfect

Which law states that the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant volume conditions?
Boyle’s law
Charles’s law
Dalton’s law
Gay-Lussac’s law

Answers

Answer:

Gay-Lussac’s law

Explanation:

Gay-Lussac’s law is one of the gas laws discovered and proposed by a French scientist called Joseph Gay Lussac (1778 - 1850). In this law, it is stated that the pressure (P) of a gas varies directly with the absolute temperature (T) at a constant volume.

That is;

: P ∝ T

: P/T = K

Where:

P = pressure exerted by the gas

T = absolute temperature of the gas

K = the constant.

Hence, according to this question, the law that states that "the pressure and absolute temperature of a fixed quantity of gas are directly proportional under constant volume conditions" is Gay-Lussac’s law.

Answer:

D. Gay-Lussac’s law

Explanation:

have a great day :)

Why does platinum metal make a good catalytic surface for reactant molecules?
It causes reactant molecules to be less reactive.
It strengthens bonds between reactant molecules.
It prevents products from breaking away from the surface.
It holds reactant molecules in a good position for them to react.

Answers

Answer:

it holds reactant molecules in a good position for then to react

Answer:

D. It holds reactant molecules in a good position for them to react.

Explanation:

Got a 100 on e2020.

I need help finding out what this is please help

Answers

Answer:

search the Lewis dot structure you will know the answer.

What is the frequency of an electromagnetic wave that has a wavelength of 8.5 x 10^2 m in a vacuum? (The speed of light in a vacuum is 3.00 x 10^8 m/s.)

A. 1.2 x 10^-3 Hz
B. 2.8 x 10^-6 Hz
C. 3.5 x 10^5 Hz
D. 2.6 x 10^11 Hz

Answers

Answer:

C=3.5 x 10^5 Hz

The answer to this question is D as it says in the answer sheet of the question paper but how?

Answers

Answer:

D

Explanation:

Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.

Answer:D

Explanation:Because of their complementary nature, the oxidation and reduction processes together are referred to as redox reactions. The reactant that brings about the oxidation is called the oxidizing agent, and that reagent is itself reduced by the reducing agent. Examples are, mercury(II) oxide, oxygen, and the copper(II) ion are oxidizing agents, and carbon, hydrazine, and zinc are the reducing agents.

What happens when phenol is treated with bromine water?

Answers

Answer:

Polyhalogen derivatives are given when Phenol is treated with bromine water, in which all the H-atoms present at the o- and p- positions are substituted by Bromine with respect to the -OH group.

hope it helps

thanku

Explanation:

Explain and describe how the photoelectric effect occurs on an atomic level in terms of protons, neutrons, and electrons

Answers

ANSWER:

Explaining the experiments on the photoelectric effect. How these experiments led to the idea if light behaving as a particle of energy called a photon.

Difference between
Atom and molecule​

Answers

Answer:

Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.

Explanation:

its on safari ??????????

What volume of 12 M NaOH and 2 M NaOH should be mixed to get 2 litres of 9 M NaOH solution?​

Answers

So you add 1.4 L of 12M NaOH to 0.6 L of 2M NaOH to get 2 L of 9M NaOH.

The volume of 12 M NaOH and 2 M NaOH should be mixed to get 2 litres of 9 M NaOH solution is 1.4 L and 0.6 L

What is Concentration ?

In chemistry, concentration is the abundance of a constituent divided by the total volume of a mixture.

Several types of mathematical description can be distinguished: mass concentration, molar concentration, number concentration, and volume concentration.

Amount of stuff = concentration x volume.

We can set up 2 equations:

V₁ = volume 12M NaOH.V₂ =  volume 2M NaOH.

(12×V₁) + (2×V₂) = 9×2 = 18

12V₁ + 2V₂ = 18 (1)

V₁ + V₂ = 2 (2)

From (2) we get:

V₁ = (2 − V₂)

Substituting  V₁ back into (1)  ⇒

12 (2−V₂) + 2V₂ = 18

24 − 12V₂ + 2V₂ = 18

10V₂ = 6

V₂ = 0.6L

From (2) we can say:

V₁ + 0.6 = 2

V₁ = 2 − 0.6 = 1.4L

Therefore, The volume of 12 M NaOH and 2 M NaOH should be mixed to get 2 litres of 9 M NaOH solution is 1.4 L and 0.6 L

Learn more about concentration here ;

https://brainly.com/question/19221273

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Jonathan conducts an experiment to determine what solutes readily dissolve in water. He places 3 tablespoons of potting soil into one cup of water. He records his observations in 15-minute increments. After a half hour, he notices that some of the soil particles have separated and sank to the bottom. O 15 minutes 30 minutes Which term best describes the combination of soil and water?

A.Mixture
B. A solution
C. an alloy
D. an emulsion ​

Answers

Answer:

A. Mixture

Explanation:

State the optimum pH for sucrase activity and describe how sucrase activity changes at more acidic and more alkaline pH values.

Answers

Answer:

Explanation:

The rather high specific activity of intracellular sucrase towards sucrose is known to be optimal at pH 6.0 and at a temperature of about 30°C. And thus, we can say that the optimum pH for sucrase activity is exactly at 6. Also, it's behaviour is said to be decreasing with increasing acidic and increasing alkallinic values.

a sample of gas measures 5 liters at 1 atm. to change the volume to a 3.5 liters at constant temperature what pressure must be applied

Answers

Answer:

0.7atm

Explanation:

3.5/5 because constant temperature

when water is added pH of the acidic solution
1 remain same
2 increases
3 decrease s
4 become zero

Answers

Answer:

the solution becomes less concentrated... meaning there is a decrease in acidity ...hence the pH slightly increases as lesser ph

means more acidity

¿QUE DATO DE LA CONFIGURACIÓN ELECTRÓNICA TE PERMITE UBICAR LOS ELEMENTOS QUÍMICOS EN LA TABLA PERIÓDICA?

Answers

The question is: WHAT DATA OF THE ELECTRONIC CONFIGURATION ALLOWS YOU TO LOCATE THE CHEMICAL ELEMENTS IN THE PERIODIC TABLE?

Explanation:

Elements which have same number of valence electrons tend to show similar chemical properties due to which they are placed in the same group.

Hence, electronic configuration of an element tells us the number of valence electrons present in an element. As a result, it becomes easy to locate the element in its respective group.

Which question would most likely be studied by a physicist?
A.
Were there ever any living organisms on Mars?
B.
Should the government spend taxpayers' money to send space probes to Mars?
C.
How can the forces on a space probe be controlled so it will land on Mars?
D.
What type of substances make up the soil on Mars?

Answers

Answer:

C.

Explanation:

Physicists main field of study is physics. This includes everything from force, matter, energy, and even time among other things. Therefore, from the questions provided the one that would most likely be studied by a physicist would be How can the forces on a space probe be controlled so it will land on Mars? This is because this question deals with forces acting on an object, regardless of what the object is Force is a huge part of physics and therefore studied by Physicists.

Is the number of electrons in different shells of an atom fixed or unlimited ? Explain by giving an example.​

Answers

Answer:

the number of electrons in a particular shell is given by the formula 2n^2 . However an electron when gets very exicited loose energy in the forms of radiation and comes in high energy level shell.


Explain why, when a force is applied to a piece of steel, it does not break but just
changes its shape.

Answers

Steel is a metal. Metals atoms are able to roll over each other into new positions without breaking the metallic bond. So, steel doesn't break but changes its shape.

What is a covalent bond ?

Answers

What is a covalent bond ?

Answer is c A bond between two atoms resulting from a transfer of an electron.

Explanation:

A covalent bond is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding pairs, and the stable balance of attractive and repulsive forces between atoms, when they share electrons, is known as covalent bonding.

A covalent bonds is a bond between two atoms that is made up of share electrons.

Options B is correct.

which chemical formula describes carbon monoxide?
a) CO
b) CO2
c) C100
d) CH4

Answers

Es(CO) .

muchas gracias!!

Answer:

[tex]{ \bf{a). \: CO}}[/tex]

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