Chemical equation to show cdso4 dissolves in water

Explanation:

Calcium hydroxide  = Ca(OH)₂

Water  = H₂O

An Arrhenius base is a substance which interacts with water to yield excess hydroxide ions, OH⁻ in an aqueous solution.

  The reaction in water;

           Ca(OH)₂   →  Ca²⁺  + 2OH⁻

The medium of this reaction is water.

Answer:

1) 0.261 M, 2) 0.662 M

Explanation:

1. We must calculate the molarity of 0.300 mol of Na₂S in 1.15 L of solution.

We know, Molarity = moles of solute/ volume of solution

= 0.300 mol/ 1.15 L
= 0.261 M

2. We must calculate the molarity of 34.7 g of MgS (56 u) in 935 mL of solution.

We know, Molarity = moles of solute/ volume of solution
Moles of MgS = 34.7/56 = 0.619
Volume of solution = 935 mL = 0.935 L

= 0.619 mol/ 0.935  L
= 0.662 M

Answer:

Diamond is the hardest things in the world

Answer:

1000 or 250

Explanation:

500x2=1000

or

500/2=250

The energy release of the reaction is 4.852 x 1017 J using nuclear masses, and 3.972 x 1017 J using atomic masses while accounting for the energy of pair production.  

To calculate the energy release in this reaction, we can use the following equation:
Energy release = (Mass of Reactants - Mass of Products) x c2

(a) Using nuclear masses:
Mass of Reactants = 13.001354 u
Mass of Products = 7.016004 u + 1.008665 u = 8.024670 u
Energy Release = (13.001354 - 8.024670) x 9 x 1016 = 4.852 x 1017 J

(b) Using atomic masses while accounting for the energy of pair production:
Mass of Reactants = 13.001354 u
Mass of Products = 7.016004 u + 1.008665 u = 8.024670 u
Energy Release = (13.001354 - 8.024670 - 2(0.510998928) ) x 9 x 1016 = 3.972 x 1017 J

Therefore, the energy release of the reaction is 4.852 x 1017 J using nuclear masses, and 3.972 x 1017 J using atomic masses while accounting for the energy of pair production.

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The heat required is to convert 75.0 g of C₂Cl₃F₃ from a liquid at 13.60 ∘C to a gas at 76.00 ∘C is 17.55 kJ.

To solve this problem, we need to consider the different steps involved in the process of converting 75.0 g of C₂Cl₃F₃ from a liquid at 13.60 ∘C to a gas at 76.00 ∘C;

Heating the liquid C₂Cl₃F₃ from 13.60 ∘C to its boiling point at 47.6 ∘C, Vaporizing the liquid C₂Cl₃F₃ at its boiling point, and heating the resulting gas from 47.6 ∘C to 76.00 ∘C

Now, we can use the equations to calculate the heat required for each step;

q₁ = m × C₁ × ΔT₁

where q₁ is the heat required, m is the mass of C₂Cl₃F₃, C₁ is the specific heat of C₂Cl₃F₃(l), and ΔT₁ is the temperature change from 13.60 ∘C to 47.6 ∘C.

q₁ = 75.0 g × 0.91 J/g⋅K × (47.6 ∘C - 13.60 ∘C)

= 2466 J

q₂ = n × ΔHvap

where q₂ is the heat required, n is the number of moles of C₂Cl₃F₃, and ΔHvap is the heat of vaporization of C₂Cl₃F₃.

n = m/M

= 75.0 g / 137.37 g/mol

= 0.5464 mol

q₂ = 0.5464 mol × 27.49 kJ/mol

= 15.038 kJ

q₃ = m × C₂ × ΔT₂

where q₃ is the heat required, m is the mass of C₂Cl₃F₃(g), C₂ is the specific heat of C₂Cl₃F₃(g), and ΔT₂ is the temperature change from 47.6 ∘C to 76.00 ∘C.

m = n × M

= 0.5464 mol × 137.37 g/mol

= 75.0 g

q₃ = 75.0 g × 0.67 J/g⋅K × (76.00 ∘C - 47.6 ∘C)

= 1446 J

The total heat required is the sum of the heats required for each step;

\(q_{total}\)= q₁ + q₂ + q₃

= 2466 J + 15.038 kJ + 1446 J

= 17.55 kJ

Therefore, the total heat required is 17.55 kJ.

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Answer:

d=3.95 g/l

Explanation:

1) Ideal gas equation:

pV = nRT

2) Transform the equation to compute density, d = m / V

n = mass in grams / molar mass = m / MM

pV = (m/MM) RT

=> pV = mRT/MM

=> m/V = pMM / (RT)

d = pMM / (RT)

p = 1.21 atm

MM = 83.80 g/mol (this is the atomic mass of krypton element)

T = 50 + 273.15 K = 323.15K

3) Compute:

d = (1.25 atm * 83.80 g/mol) / (0.0821 atm*liter /K*mol * 323.15K)

Answer:

The percentage yield of sodium carbonate is 91.47%

Explanation:

we start by writing the reaction equation:

2NaCl + CaCO3 ——-> Na2CO3 + CaCl2

From the reaction we can see that 2 moles of sodium chloride produced 1 mole of sodium carbonate

Let us calculate the actual number of moles of sodium chloride produced from 112 g of it

Mathematically,

number of moles = mass/molar mass

Molar mass of sodium chloride is 23 + 35.5 = 58.5 g/mole

So the number of moles of sodium chloride produced will be 112/58.5 = 1.91 moles

The number of moles of sodium carbonate produced is half of this = 1.91/2 = 0.955

The mass of sodium carbonate produced from 0.955 moles of it will be;

number of moles * molar mass

The molar mass of sodium carbonate is 106 g/mol

So the number of moles is = 0.955 * 106 = 101.23 g

Mathematically;

percentage yield = actual yield/theoretical yield * 100%

Percentage yield = 92.6/101.23 * 100% = 91.47%

Answer:

No it is not balanced

Explanation:

CaCl2 + 2NaHCO3 → CO2 + CaCO3 + H2O + 2NaCl

Hope this helps

The mass percent composition of each constituent element of lead (II) phosphate is:
Pb = 76.58%
P = 7.63%
O = 15.79%

To calculate the mass percent composition of each constituent element of lead (II) phosphate, we need to first find the molar mass of each element in the compound and then divide each by the total molar mass of the compound.The chemical formula for lead (II) phosphate is Pb3(PO4)2.

The molar mass of each element in the compound is:
Pb = 207.2 g/mol
P = 30.97 g/mol
O = 16.00 g/mol

The total molar mass of the compound is:
Pb3(PO4)2 = (3 × 207.2) + (2 × 30.97) + (8 × 16.00) = 811.34 g/mol

The mass percent composition of each element is:
Pb = (3 × 207.2) / 811.34 × 100 = 76.58%
P = (2 × 30.97) / 811.34 × 100 = 7.63%
O = (8 × 16.00) / 811.34 × 100 = 15.79%

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The equilibrium constant (Kc) for the given reaction is approximately 16.448. The value of Kc indicates the relative concentrations of reactants and products at equilibrium. In this case, a Kc greater than 1 suggests that the products (H2 and P4) are favored at equilibrium, indicating that the forward reaction is more favorable.

To determine the equilibrium constant (Kc) for the given reaction:

4PH3(g) ↔ 6H2(g) + P4(g)

We can write the equilibrium constant expression based on the stoichiometric coefficients:

Kc = ([H2]^6 * [P4]) / ([PH3]^4)

Substituting the given equilibrium concentrations:

[PH3] = 0.250 M

[H2] = 0.580 M

[P4] = 0.750 M

We can plug in these values into the equilibrium constant expression:

Kc = ([0.580]^6 * [0.750]) / ([0.250]^4)

Kc = (0.0860128 * 0.750) / (0.00390625)

Kc = 16.448

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Answer:

lack of sunlight, overcrowded region for shelter of the plants, no nutrients and water supply, etc.

Explanation:

The plants needs favorable climatic conditions and nutrient to grow. Plants need air, sunlight, water, proper temperature, nutrients, etc. grow and make their food. They make their food with the help of sunlight and carbon dioxide by a process called as photosynthesis.

Now in the context, Amy is setting up an experiment where she will study the growth of plants in two models. One in the normal growing conditions and the other in a drought condition.

Drought is considered the most important abiotic factor that limits the growth and adversely affects the growth and the crop. The factor that is important for Amy to change the model into a drought conditions is the lack of water and carbon dioxide in the atmosphere. Also scarcity of sunlight and nutrients. The drought stress is considered as one of the crop performance limiting factors.

The concentration of the new potassium permanganate, KMnO solution is 0.06 M.

To find the concentration of the new solution, we can use the formula,

C₁V₁ = C₂V₂,

C₁ = 0.75,

V₁ = 20.0 mL,

V₂ = 250.0mL

C₂ is what we have to find. Plugging in the values we know, we get,

0.75 M x 20.0 mL = C₂ x 250.00 mL

Solving for C₂, we get the final concentration of the potassium permanganate.

C₂ = (0.75 M x 20.0 mL) / 250.00 mL

C₂ = 0.06 M

Therefore, the concentration of the solution has changed to 0.06 M from 0.75M.

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By a redox reaction that involves the transfer of electrons, often through the dissolution of an ionic substance, electrochemical cells produce electricity from the flow of electrons.

In electrochemistry, redox or oxidation-reduction reactions, in which electrons travel from one element to another, can produce electricity. Redox processes involve the transfer of electrons from one substance to another.

Batteries use a very significant class of oxidation and reduction reactions to produce useable electrical energy. Using solutions of respective sulphates, copper and zinc metals can be combined to create a straightforward electrochemical cell.

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Answer:

it may lead to read false measurements

while in an experiment.

that's what I think.

NaHCO3 is soluble in water.  NaHCO3 is ionic polar compound. water is polar quantities so, polar disolve in polar.

The basic concept of solubility is that like dissolves like. It means that polar substances are soluble in polar solvents and non-polar substances are soluble in non-polar solvents.

Solubility is described as the most amount of a substance so that it will dissolve in a given amount of solvent at a exact temperature. Solubility is a function property of a particular solute–solvent aggregate, and unique substances have substantially differing solubilities.

Solubility is the ability of a substance (solute) to form a solution with another substance (solvent). Insolubility is the opposite property, the inability of a solute to form such a solution.

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Crystals form when magma cools because the solution is super-saturated with certain minerals. Because the crystals do not have much time to form if the magma cools quickly, they are very small. The crystals have enough time to grow and become large if the magma cools slowly.

When the solution becomes supersaturated, which means there is too much salt dissolved in the water, crystals form. Crystals form from the extra salt (or other material). To obtain a supersaturated solution, either cool the solution or allow some of the water to evaporate.

The size of the crystals is affected by the solubility of the compound in the solvent used for recrystallization, the number of nucleation sites, mechanical agitation of the system, and time during crystal growth.

Thus, the crystals do not have much time to form if the magma cools quickly, they are very small.

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the possible quantum numbers (ordered n, ℓ, mℓ ) are:Option B.5, 3, -3 and Option C. 4, 3, -2

The quantum numbers n, ℓ, mℓ represent respectively the principal quantum number, the orbital angular momentum quantum number and the magnetic quantum number.

These are the three most important quantum numbers. T

here is another quantum number called the spin quantum number, denoted by ms.

Let's see which of the given quantum number sets is possible.2, 1, 3 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. 5, 3, -3 is possible.4, 3, -2 is possible. -4, 3, 1 is not possible.

For any value of ℓ, mℓ must be between -ℓ and +ℓ. e. 2, 1, -2 is not possible because for ℓ = 1, mℓ can only be -1, 0, or 1. f. 3, 2, 2 is not possible because for ℓ = 2, mℓ can only be -2, -1, 0, +1, or +2. g. 3, 3, 1 is not possible because for any value of ℓ, mℓ must be between -ℓ and +ℓ.

Therefore, the possible quantum numbers (ordered n, ℓ, mℓ ) are:5, 3, -34, 3, -2

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Answer:

diatomic

Explanation:

Answer:

Hi goodmorning

To answer these questions, you can use the ideal gas law, which relates the pressure, volume, temperature, and number of moles of a gas. The ideal gas law is given by the following equation:

PV = nRT

Where P is the pressure of the gas, V is the volume of the gas, n is the number of moles of the gas, R is the ideal gas constant, and T is the temperature of the gas.

If pressure and temperature remain constant, then the volume of the gas will change inversely with the number of moles of the gas. This means that if the number of moles of the gas increases, the volume of the gas will decrease, and if the number of moles of the gas decreases, the volume of the gas will increase.

For example, in part (a), the number of moles of argon gas in the container increases by 1.80 mol, so the volume of the gas will decrease. The new volume of the gas can be calculated as follows:

V = (nRT)/P

= (1.80 mol * 8.31 J/mol*K * 300 K)/(1 atm)

= 4452 J

= 4.452 L

The total volume of the gas is then 10.00 L + 4.452 L = 14.452 L.

In part (b), the number of moles of argon gas in the container increases by a certain amount, which you can calculate using the molar mass of argon. The molar mass of argon is 39.948 g/mol, so the number of moles of argon in 25.0 g of argon is 25.0 g / 39.948 g/mol = 0.625 mol. The new volume of the gas can be calculated as follows:

V = (nRT)/P

= (0.625 mol * 8.31 J/mol*K * 300 K)/(1 atm)

= 1478.125 J

= 1.478 L

The total volume of the gas is then 10.00 L + 1.478 L = 11.478 L.

In part (c), the number of moles of argon gas in the container decreases by half, so the volume of the gas will increase. The new volume of the gas can be calculated as follows:

V = (nRT)/P

= (0.9 mol * 8.31 J/mol*K * 300 K)/(1 atm)

= 2463.9 J

= 2.464 L

The total volume of the gas is then 10.00 L + 2.464 L = 12.464 L.

In part (d), the number of moles of CO2 gas in the balloon increases by 0.50 mol, so the volume of the gas will decrease. The molar mass of CO2 is 44.01 g/mol, so the number of moles of CO2 in 4.80 g of CO2 is 4.80 g / 44.01 g/mol = 0.109 mol. The new volume of the balloon can be calculated as follows:

V = (nRT)/P

= (0.109 mol + 0.50 mol) * 8.31 J/mol*K * 300 K)/(1 atm)

= 806.36 J

= 0.806 L

Answer:

The correct answer is -

takes place in the Sun

plays a role in the production of essentially all elements heavier than helium

releases large amounts of energy

Explanation:

Fusion reaction takes place when two or more small atomic nuclei come in close proximation for a longer time so the nuclear force pulling them together and form into heavier molecules than helium and releases a huge amount of energy by this process.

A great example of this fusion reaction is the sun where nuclear fusion takes place inside the core of the sun and result in a huge amount of release as it is an exothermic reaction.

Answer:

Explanation

EDGE2021

Answer:

2.282 atm

P1V1/T1 = P2V2/T2

2.70atm / (50+273) = X/ 273

make x subject of formula

:. X = 2.28 atm

or 2.28 * 1.01 *10⁵ N/m²

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Answer:

1371 would be the right calculation

The diagram shows a picture of a compound.

A compound is a substance that is made up of two or more different elements that are chemically bonded together in a specific ratio.

This means that the elements are combined in a way that creates a new substance with different physical and chemical properties than the individual elements.

Compounds can be formed through a variety of chemical reactions, such as combining elements through a chemical bond or through a reaction between an acid and a base.

So for the given diagram, we can see that it represents two or more elements chemically combined.

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Answer:

B

Explanation:

Most animals change due to the environment to help them live better