Determine from the balanced chemical reaction if
the derived mole ratio is correct or incorrect.
2 FeBr3 + 3Na2S → Fe2S3 + 6NaBr
1 moles NaBr
1 moles Nas

Answer:

volume problem

Explanation:

cubic usually means volume

The mass concentration of the 0.75 mol.dm-³ AgNO3 solution is 127.5 g/dm³.

Concentration is the amount of a solute present ina a given volume of solution.

Concentration of solutions can either be expressed as:

The concentration of 0.75 mol.dm-³ AgNO3 is a molar concentration.

The concentration can be converted to mass. concentration as follows:

molar mass of AgNO3 = 170 g/mol

Mass concentration = 0.75 × 170 = 127.5 g/dm³.

Therefore, the mass concentration of the AgNO3 solution is 127.5 g/dm³.

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To determine the substance that comprises the anode and the cathode in a galvanic cell is by determing ;

The material with the larger (more positive) standard reduction potential that will be the cathode.

In a galvanic cell, oxidation which leads to the loss of elctrons occurs at the anode, while reduction ( addition of elctrons ) occurs at the cathode. therefore the materials with a more positive standard reduction potential will be the cathode of the galvanic cell.

Hence we can conclude that The material with the larger (more positive) standard reduction potential will be the cathode.

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Temperature (T) = 120°C

= (120+273) K

= 393 K

Pressure (P) = 33.3 atm

Volume (V) = 25.5 L

Gas Constant (R) = PV/T

= (1*22.4)/273

= 0.082 atm.L/K.mol

Law= PV = nRT

= (33.3*25.5)

= (n*0.082*393)

= 849.15

= 32.226n

= 26.349n

= 26.3 mol Cl₂

therefore, the number of moles are 26.3 mol Cl₂.

PV = nRT

P = 33.3 atm

V = 25.5 L

n = ? mol

R = 0.08206 L•atm/K•mol

T = 120.0 °C + 273.15 = 393.15 K

Solve for moles:

n = PV/RT

n = (33.3 atm × 25.5 L)/(0.08206 L•atm/K•mol × 393.15 K)

= 26.3 mol Cl₂

Answer:

Explanation:

Remark

You have 2 facts that you got from the experiment. The first is that the mass of the wood is 63.85 grams and the volume can be calculated.

From there, the desity can be found.

Givens

m = 63.85 grams

vo = 50 mL

vf = 125 mL

Solution

Volume = vf - vo

Volume = 125 mL - 50 ml. This gives you the amount of water that has been moved aside (called displaced)

volume = 75 mL

D = 63.85 grams/ 75 mL

D = 0.851 grams / mL

Some woods actually do have a density less than 1 which is the density of water. These woods float.

Answer:

Using magnets to repel each other is one way to try to achieve a frictionless bearing.  In practice, it can be difficult to remove all friction.  While a pair of magnets will repel each other, they are not stable in this condition.  One magnet won't simply float forever above another magnet.

Explanation:

Answer:

woodpecker it's easy lil lol

Taking into account the definition of calorimetry, sensible heat and latent heat, the specific heat capacity of the material is 0.203 [tex]\frac{calories}{gC}[/tex].

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

The amount of heat a body receives or transmits is determined by:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

Replacing in the definition of amount of heat:

1220 calories= c× 100 g× 60 C

Solving:

c= 1220 calories÷ (100 g× 60 C)

c= 0.203 [tex]\frac{calories}{gC}[/tex]

Finally, the specific heat capacity of the material is 0.203 [tex]\frac{calories}{gC}[/tex].

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Answer:

A liquid evaporated slow at higher temperature bz the vapour pressure of the is higher so few molecule can escape the surface

Answer:

The correct answer is D. A liquid evaporates faster at higher temperatures because more particles have a higher speed and can overcome attractions in the liquid.

Explanation:

I just got it right on Edge.

Hope this helped!

Brainliest would be greatly appreciated :D

Answer:

C because 77.0 CsF

Explanation:

That is the correct answer because I have that homework and i got it right

The description included refers to safety measurements when using microbiological transfer loops in the laboratory.

These are simple tools used to pick up small samples of microorganisms, which is often used to transfer the microorganisms.

Transfer loops can easily contaminate; due to this, it is essential to flame loops. This should be done either by:

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In an energy profile diagram, part 2 the initiation or activation energy is lowered and parts 1 and 3 would be unchanged; option C.

A catalyst is a substance which alters the rate of a chemical reaction but is not chemically altered in the reaction.

Addition of a catalyst to a reaction lowers the activation energy of that reaction.

Thus, in an energy profile diagram, part 2 the initiation or activation energy is lowered and parts 1 and 3 would be unchanged.

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In an energy profile diagram, in part 2 the initiation or activation energy is lowered and parts 1 and 3 would be unchanged. Hence, option C is correct.

The addition of a catalyst provides an alternate pathway/mechanism with a lower energy of activation, thus speeding up the reaction.

Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism.

Thus, in an energy profile diagram, in part 2 the initiation or activation energy is lowered and parts 1 and 3 would be unchanged.

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Answer:

Electrical energy is the product of power multiplied by the length of time it was consumed. So if we know how much power, in Watts is being consumed and the time, in seconds for which it is used, we can find the total energy used in watt-seconds. In other words, Energy = power x time and Power = voltage x current.

The amount of current the electric motor having a power of 240 W Will draw from the 24 V supply is 10 A

This is defined as the rate in which energy is consumed. Electrical power is expressed mathematically as:

Power (P) = voltage (V) × current (I)

P = IV

From the question given above, the following data were obtained:

Voltage (V) = 24 V

Power (P) = 240 W

Current (I) = ?

P = IV

240 = I × 24

Divide both sides by 24

I = 240 / 24

I = 10 A

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Answer:

but purely citric acid synthetic Acid whose moller mass is equal to 192 g per mole. Okay, so here we have Modernity is even McGarity is equal to 0.5 M and we have volume, so Volume is equal to 200 mililiters  is equal to 0.1 liter  Okay, so they are asking to calculate the mass of what u have  Okay. So first of all, if we want to calculate the mass of then we have to calculate the number of moles. So maturity is equal to the number of moles per volume in liters . So you mean zero point sorry from this one number of moles is equal to So N is equal to m multiplied very weak. So that is equal to 0.1 and 0.5. So that is equal to 0.05 moles. Okay, now the mask is equal to the mass of cool eh is equal to the number of Okay. Number of 0.5 and it is multiplied by 92 g per mole. Then it is equal to 9.6 g. So this is the mass of a present. A 0.500 ml

Answer:

Here are some disadvantages

Explanation:

Hard water does not pose a health threat.

Hard water can contribute to dry skin and hair.

Hard water is unfit for washing as it is difficult to form lather with soap.

Trimming of kettles will take place due to the formation of magnesium and carbonates of calcium.

The Taste/Smell

Lather

Dishwashing Ability

Clothes-Washing Ability

Staining

Limescale Buildup

Corrosion

From the mole ratio of the gases, 10 moles of hydrogen will produce 10 moles of water, and if 10.0 L of hydrogen and 6.0 L of oxygen were used, 10.0 L of water will be produced.

The mole ratio of the reactants in the formation of water can be shown from the equation below:

[tex]2H_2 + O_2 \rightarrow 2H_2O[/tex]

Mole ratio of hydrogen to oxygen is 2:1

10 moles of hydrogen will require 5 moles of oxygen, therefore hydrogen is the limiting reactant.

10 moles of hydrogen will produce 10 moles of water.

1 mole of a gas has a volume of 22.4 L.

If 10.0 L of hydrogen and 6.0 L of oxygen were used, 10.0 L of water will be produced.

Therefore, the volume ratio of gas equals mole ratio of gas.

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When Mercury-203 undergoes beta minus decay, the nucleus that is formed is 203/81Tl.

A parent nucleus is said to undergo beta emission when only when an electron is lost to form the daughter nucleus. This would make the atomic number of the daughter nucelus to increase by 1.

Hence, when Mercury-203 undergoes beta minus decay, the nucleus that is formed is 203/81Tl.

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Answer:

Mercury-203 undergoes beta minus decay. The subscript in the nuclide notation, Hg, is ____80______

The element symbol produced is __TI__ . It has a mass number __203__ and an atomic number ___81____

80

Explanation:

Answer: The mass of oxygen in 25.0 grams of potassium permanganate, KMnO4 is 10.13 grams. molar mass of KMnO₄ = 39 + 55 + 16(4).

Explanation:hope this helps ^^ have a good day xlXCherryColaXlx..(pls mark me brainliest)

To determine the mass of oxygen in 25.0 grams of potassium permanganate (KMnO4), we need to consider the molar mass and the ratio of oxygen atoms in the compound.

Molar mass is a term used in chemistry to denote the mass of one mole of a substance. It is expressed in grams per mole (g/mol). Molar mass is calculated by summing up the atomic masses of all the atoms in a molecule, as indicated by its chemical formula.

The molar mass of potassium permanganate (KMnO4) can be calculated as follows:

Molar mass of K = 39.10 g/mol

Molar mass of Mn = 54.94 g/mol

Molar mass of O = 16.00 g/mol (since there are 4 oxygen atoms in KMnO4)

Molar mass of KMnO4 = (39.10 g/mol) + (54.94 g/mol) + (4 * 16.00 g/mol)

= 39.10 g/mol + 54.94 g/mol + 64.00 g/mol

= 158.04 g/mol

Now, we can calculate the mass of oxygen in 25.0 grams of KMnO4 using the molar mass and the molar ratio:

Mass of oxygen = (Molar mass of O / Molar mass of KMnO4) * Mass of KMnO4

= (4 * 16.00 g/mol / 158.04 g/mol) * 25.0 g

= (64.00 g / 158.04 g) * 25.0 g

= 0.4052 * 25.0 g

= 10.13 g (rounded to two decimal places)

Therefore, the mass of oxygen in 25.0 grams of potassium permanganate (KMnO4) is approximately 10.13 grams.

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Answer:

Bases

Explanation:

Soap is a common example of a base. They taste bitter (try tasting soap or shampoo) and are slippery (that is why a wet bar of soap flies out of your hands)

Answer:

physical property has a melting point

Answer:

true

Explanation:

Answer:

its true

Explanation:

you know Aspirin is one of the Aesthetic Values of biodiversity is true

hope it help to you and goodluck next time

Answer:

INTENSIVE PROPERTY OF MATTER

Explanation:

DENSITY IS AN INTENSIVE PROPERTY OF MATTER THAT ILLUSTRATES HOW MUCH MASS A SUBSTANCE HAS IN A GIVEN AMOUNT OF VALUE,

Answer:

I gotthe answer

Explanation:

The explanation is This

Now writing the value in sentific term

It would look like

[tex]4.76 \times {10}^{2} \times {10}^{ - 9} [/tex]

[tex]4.76 \times {10}^{2 - 9} [/tex]

4.76

[tex]4.76 \times {10}^{ - 7} [/tex]

Now in centimeter

[tex]4.76 \times {10}^{ - 5} [/tex]

PLEASE MARK ME BRAINLIEST IF MY ANSWER IS CORRECT PLEASE

Answer: a. cause nuclear decay

Explanation:

Calculate its molar solubility in a saturated aqueous solution that is also 0.050 M in fluoride ion, F-. Ksp = (x)(2x + 0.05)2. 2x = 4.210 4

The specific heat capacity of Aluminum of mass 3 grams that was heated from 20 °C to 662 °C while absorbing 1728 J of heat is 12.5 J/g°C.

The specific heat capacity of a substance can be calculated using the following formula:

Q = m × c × ∆T

Where;

According to this question, 3 grams of Aluminum was heated from 20 °C to 66.2 °C while absorbing 1728 J of heat.

1728 = 3 × c × (66.2 - 20)

1728 = 138.6c

c = 1728 ÷ 138.6

c = 12.5 J/g°C

Therefore, the specific heat capacity of Aluminum of mass 3 grams that was heated from 20 °C to 662 °C while absorbing 1728 J of heat is 12.5 J/g°C.

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Answer:

If the temperature is increased, the average speed and kinetic energy of the gas molecules increase. If the volume is held constant, the increased speed of the gas molecules results in more frequent and more forceful collisions with the walls of the container, therefore increasing the pressure

Explanation:

hope this helps

Answer:

If you know the formula to use you should have no trouble getting the answers.

molality = mols/kg solvent.

mols sucrose = g/molar mass

kg solvent = 0.275 kg.