A 500-gram block of solid cheese is melted in a pot. Which is most likely be the mass of the cheese after it is melted?


pleaseeeeeeeeee answer

By performing the necessary calculations and comparing the Q/K ratios, we can determine whether calcite or dolomite would form first in the given water sample with [Mg2+]∼0.10 mmol/L.

To determine which mineral, calcite or dolomite, would form first in the given water sample with [Mg2+]∼0.10 mmol/L, we need to calculate the saturation index (SI) for each mineral by comparing the Q/K ratios. The mineral with the higher SI will be more likely to precipitate first.

The saturation index (SI) is calculated by comparing the ion activity product (Q) with the equilibrium constant (K) for a particular mineral. In this case, we have the equilibrium reaction: CaMg(CO3​)2​⇌Ca2++Mg2++2CO3​2−.

For calcite, the Q/K ratio can be calculated using the concentration of Ca2+ and CO3​2− ions in the water sample. Since dolomite contains both Ca2+ and Mg2+ ions, we need to consider the concentration of Mg2+ as well.

By comparing the Q/K ratios for calcite and dolomite, we can determine which mineral has a higher saturation index (SI). The mineral with the higher SI will be more likely to precipitate first.

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Answer:

Graduated cylinder

Stopwatch

Thermometer

Electronic Balance

Explanation:

The answers on Edge are above.   (VERIFIED Edge Answer)

Make sure to click "thanks" and rate this answer to let others know this is the correct answer for this question.  

Edge Tip: Answers do not mix or change.

A simple test is what researchers often use to determine if changes in one variable may lead to changes in another variable — in other words, establish cause and effect.

Check Basic

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The both can be separated by adding water to the mixture.

Diamonds and sugar are two very different substances, and it is relatively easy to separate them from each other using physical and chemical methods.

One common method to separate diamonds from sugar is by using their different physical properties. Diamonds have a much higher density than sugar, so if you mix a sample of both substances in water, the diamonds will sink to the bottom while the sugar will float on top and dissolve in the water. This is known as gravity separation.

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1. Calcium has an atomic number of 20 and phosphorus has an atomic number of 15, while radium has an atomic number of 88. This can be used to determine which element was most likely deposited in the workers' bones in place of calcium.

2. Calcium. This is because calcium is an element with an atomic number of 20, meaning it has 20 protons in its nucleus. It is also found in abundance both in the human body and in many foods, making it easy to obtain and store in the body.

Characteristics of Calcium Ions:

- Has a charge of +2

- Located in column 2 of the periodic table

- Atomic number of 20

Reasons it could be Phosphorus:

- Has a charge of +3

- Located in column 3 of the periodic table

- Atomic number of 15

Reasons it couldn't be Phosphorus:

- Has a higher charge than calcium

- Has a different atomic number than calcium

Reasons it could be Radium:

- Has a charge of +2

- Located in column 7 of the periodic table

- Atomic number of 88

Reasons it couldn't be Radium:

- Has a different atomic number than calcium

- Is located in a far different column than calcium on the periodic table

Conclusion
Based on the evidence, it is likely that the source of the poisoning was radium, and from a chemistry perspective, the shop owners were responsible for exposing the workers to this element and, as such, are responsible for their illnesses.

Answer:

They made this graphics, how they measured the gas and how this affected the climate change horribly.

They created these images to show how the gas was measured and how the climate change was adversely affected the greenhouse gases.

A greenhouse gas is a gas that produces the greenhouse effect by both absorbing and emitting radiant energy at thermal infrared wavelengths. The five main greenhouse gases in the atmosphere of Earth are ozone, carbon dioxide, methane, and water vapor.

The gases that trap heat in the earth's atmosphere are referred to as greenhouse gases. The earth's surface warms during the day when the light beams through the atmosphere.

The earth's surface cools at night, redistributing heat into the atmosphere. However, part of the heat is captured by the atmosphere's greenhouse gases.

Therefore, how the climate change was adversely impacted the greenhouse gases must ask the team.

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Answer:

 4Al  + 3O₂  →  2Al₂O₃

Explanation:

The problem here is in balancing the equation below:

     Al  + O₂  →  Al₂O₃

In balancing a chemical equation, the number of atoms on both sides of the expression must be the same;

   put the alphabets a, b and c before each specie;

                  aAl  + bO₂  →  cAl₂O₃

Conserving Al;

                    a  = 2c

Conserving  O:

                     2b  = 3c

  Now, let c  = 1, a  = 2

                b  = \(\frac{3}{2}\)  

Multiply through by 2;

           c  = 2, a  = 4 and b  = 3

          4Al  + 3O₂  →  2Al₂O₃

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Answer:

lead

Explanation:

Answer:

Lead is poisonous.

Explanation:

According to henry's law, higher the pressure of the gas, more is the solubility of gas in liquid. Increasing pressure on the gas molecules, reduces the kinetic energy of the gas molecules and hence increase the concentration of gas in solution.

According to henry's law of solubility, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid.

Mathematically,

C=K×P

where

C=solubility of a gas in a liquid

K= henry's constant=6.1x10⁻⁴ M /atm for nitrogen

P= pressure of the gas

The  gas molecules keep on moving randomly with high kinetic energy so it is very difficult to dissolve gas in solution. To do this we need to apply high pressure over the gas so that gas particles comes closer and easily goes into the solution.

Therefore, increasing pressure on the gas molecules, reduces the kinetic energy of the gas molecules and hence increase the concentration of gas in solution.

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The volume of NaOH solution used in the titration is 22.50 mL or 0.0225 L. The molarity of the NaOH solution is 0.210 mol/L.

To determine the molarity of the NaOH solution, we can use the balanced chemical equation for the reaction between NaOH and KHP:

NaOH + KHP → NaKP + H2O

From the equation, we can see that one mole of NaOH reacts with one mole of KHP. Therefore, the number of moles of NaOH used in the titration can be calculated by:

moles NaOH = molarity of NaOH solution × volume of NaOH solution used (in liters)

The volume of NaOH solution used in the titration is 22.50 mL or 0.0225 L.

To calculate the molarity of the NaOH solution, we need to determine the number of moles of NaOH used in the titration. From the balanced equation, we can see that one mole of KHP reacts with one mole of NaOH. The mass of KHP used in the titration is 0.969 g, which corresponds to the number of moles of KHP used:

moles KHP = mass of KHP / molar mass of KHP

= 0.969 g / 204.22 g/mol

= 0.004738 mol

Since the stoichiometry of the reaction is 1:1, the number of moles of NaOH used in the titration is also 0.004738 mol. Substituting these values into the above equation, we get:

0.004738 mol = molarity of NaOH solution × 0.0225 L

Solving for the molarity of the NaOH solution, we get:

molarity of NaOH solution = 0.004738 mol / 0.0225 L

= 0.210 mol/L

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Answer:

1.) Anaphase ------> D.) The chromosomes are separated and move to opposite sides of the cell.

2.) Prophase -------> B.) The DNA is organized into connected rods called chromosomes.

3.) Metaphase -------> A.) Chromosomes line up at the center of the cell.

4.) Telophase ------> C.) New cells begin to form.

Answer:

From left box to right box: Footwall, fault plane, hanging wall

Explanation:

A foot wall is the one holding us the hanging wall so the highest piece. Think of rock climbing. You put your feet on the wall or rocks to push yourself up. The foot wall is the rocks for the hanging wall.

The hanging wall is the part that's "hanging" from the other wall. So the lowest one. Think of it as the part that's hanging.

A fault plane is where the place where the fault happens which would be where there is the difference in elevations originate from. Think of it like the crack in the middle.

Don't be afraid to reach out if you need further help, I hope this helps!

Answer:

decreasing pressure will shift the reaction toward the reactants

Answer: It will take 68 days for the palladium to decay.

Explanation: ima smart dude

H₂S

Given

ΔH fusion and ΔH vaporization  of different substances

Required

The substance absorbs 58.16 kJ of energy when 3.11 mol vaporizes

Solution

We can use the formula :

\(\tt \Delta H=\dfrac{Q}{n}\)

Q=heat/energy absorbed

n = moles

The heat absorbed : 58.16 kJ

moles = 3.11

so ΔH vaporization :

\(\tt \Delta H_{vap}=\dfrac{58.16~kJ}{3.11~mol}\\\\\Delta H_{vap}=18.7~kJ/mol\)

The correct substance which has ΔH vaporization = 18.7 kj / mol is H₂S

(H₂S from the data above has ΔH fusion = 2.37 kj / mol and ΔH vaporization = 18.7 kj / mol)

Answer:

b

Explanation:

Explanation:

The statement that accurately describes what happens when ice melts in terms of energy is: "The ice absorbs energy which causes the water molecules to have more kinetic and potential energy, changing their configuration from a solid to a liquid."

When heat energy is added to ice, its temperature increases until it reaches the melting point of 0°C (32°F). At this point, the heat energy is used to break the bonds between the water molecules in the ice crystal structure, allowing the molecules to move more freely. This energy is absorbed by the ice as latent heat of fusion, which increases the kinetic and potential energy of the water molecules and causes the ice to melt and turn into water.

yo yo yo

Explanation:

1. Force of molecules striking one another

2. the process of energy passing from one body to another

3. thermal

4. light

5. its energy is transferred to the other car.

The phrase that describes the energy of collision is D. kinetic energy transferred when billiard balls hit each other.

collision can be regarded as  coming together of one solid or direct impact to the other such as car collided with a tree.

Therefore, kinetic energy transferred when billiard balls hit each other is an example.

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Answer:

=> 11. d. Moon

The moon is not a light source because it does not emit its own light.

=> 12. b. The light is refracted.

13. What is the substance produced by a chemical reaction called?

=> b. Product

Answer:

Si se usan 50 gramos de calcio y óxigeno, se obtienen 70 gramos de óxido de calcio.

Explanation:

Hola,

En este caso, la reacción llevada a cabo es:

\(2Ca+O_2\rightarrow 2CaO\)

De este modo si asumimos el ejemplo dado, 50 gramos de calcio, cuya masa atómica es 40 g/mol y 50 g de oxígeno, cuya masa atómica como gas diatómico es 32 g/mol, antes de calcular los gramos de óxido de calcio producidos, debemos identificar el reactivo límite. Así, calculamos las moles de calcio disponibles en 50 g:

\(mol_{Ca}^{disponible}=50gCa*\frac{1molCa}{40gCa} =1.25molCa\)

Y también las moles de calcio consumidas por los 50 g de oxígeno, utilizando su relación molar 2:1:

\(mol_{Ca}^{consumidas\ por\ O_2}=50gO_2*\frac{1molO_2}{32gO_2} *\frac{2molCa}{1molO_2} =3.125molCa\)

Por lo tanto, hay menos calcio disponible que el que consume el oxígeno, por lo que el calcio esel reactivo límite. Ahora, con este, calculamos los gramos de óxido de calcio, cuya masa molar es 56 g/mol, que se producen:

\(m_{CaO}=1.25molCa*\frac{2molCaO}{2molCa}* \frac{56gCaO}{1molCaO}\\ \\m_{CaO}=70gCaO\)

Esto quiere decir que de 50 gramos de oxígeno, solo 20 gramos reaccionan para formar 70 gramos de óxido de calcio.

Saludos!

Answer:

69.9 g of CaO will be produced. ≅ 70 g

Explanation:

First of all you need to make the reaction:

2Ca + O₂ → 2 CaO

Determine the moles of each reactant:

10 g Ca / 40.08 g/mol = 0.25 moles

4 g O₂ / 32 g/mol = 0.125 moles

There is no limiting reagent in this reaction, we can use both elements.

Ratio between Ca and CaO, is 2:2. For 0.25 moles of Ca I would make 0.25 moles of CaO. We convert the moles to mass:

0.25 mol . 56.08 g / 1mol = 14 g

Let's think when you have the same mass of reactant:

50 g Ca/ 40.08 g/mol = 1.24 moles

50 g O₂ / 32 g/mol = 1.56 moles

For 1 mol of oxygen I need 2 moles of calcium, so If I have 1.56 moles, I would need the double, 3.12. Notice that Ca is the limiting reagent (we need 3.12 moles of reactant, but we only have 1.24). Now we need to work with it. If 2 moles of Ca, makes 2 moles of CaO, then 1.24 moles, will produce the same amount of oxide. We finally convert the moles to mass: 1.24 mol . 56.08 g/mol = 69.9 g

Answer:

Grams of chlorine gas to moles

The SI base unit for amount of substance is the mole. 1 grams Chlorine is equal to 0.028206357713029 mole.

Explanation:

The final temperature, in degrees Celsius, of the gas is 34.62 °C

From the question, we are to determine the final temperature, in degrees Celsius

From the Pressure law or Gay-Lussac's law

We have that, for a given mass and constant volume of an ideal gas, the pressure exerted on the sides of its container is directly proportional to its absolute temperature.

Using the formula,

\(\frac{P_{1} }{T_{1}} = \frac{P_{2} }{T_{2}}\)

Where P₁ is the initial pressure

T₁ is the initial temperature

P₂ is the final pressure

and T₂ is the final temperature

From the given information,

P₁ = 739 mmHg

T₁ = 23 °C = 23 + 273.15 = 296.15 K

P₂ = 768 mmHg

T₂ = ?

Putting the parameters into the formula, we get

\(\frac{739}{296.15}=\frac{768}{T_{2} }\)

Then,

\(T_{2} = \frac{768 \times 296.15}{739}\)

T₂ = 307.77 K

Therefore,

T₂ = 307.77 - 273.15 = 34.62 °C

Hence, the final temperature, in degrees Celsius, of the gas is 34.62 °C

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Here is the complete question:

A gas sample has a pressure of 739 mmHg when the temperature is 23 °C. What is the final temperature, in degrees Celsius, when the pressure is 768 mmHg, with no change in the volume or amount of gas?

30 ml volume of water have to add to 15. 0 ml of 12 m hcl to make it to 6. 0 m solution.

How do you calculate the volume of a solution needed?

Given data

So first we set up the dilution equation: M1*V1=M2*V2

M: Molarity

V: Volume

We can set these equal in a dilution equation because Molarity is Miles per Volume, and by multiplying it by Volume we get Moles on each side. Moles of solute remain equal throughout a dilution since you are just adding water.

Next, we plug in our knowns:

(12.00M HCl)(15.00ml)=(6.00M HCl)(V2)

V2 = 15 X 12 / 6 = 30ML

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Answer:

The energy consumed by animals in the form of glucose is conserved because it is transformed into chemical energy as carbon dioxide is produced during respiration.

Explanation:

There's no diagram....but I kinda figured it from the description.

The best explain at location F is the energy consumed by animals in the form of glucose is conserved because it is transformed into chemical energy as carbon dioxide is produced during respiration.

During aerobic cellular respiration, glucose reacts with oxygen, forming ATP ( Adenosine triphosphate) that can be used by the cell. Carbon dioxide and water are created as byproducts. The overall equation for aerobic cellular respiration is: In cellular respiration, glucose and oxygen react to form ATP ( Adenosine triphosphate)

Adenosine triphosphate is an organic compound which gives energy to living organisms to drive many operations in living cells such as muscle contraction, muscle pumps, nerve impulse propagation, condensate dissolution, and chemical synthesis.

Therefore, the best explain at location F is the energy consumed by animals in the form of glucose is conserved because it is transformed into chemical energy as carbon dioxide is produced during respiration.

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The mass of the cube of iron with a side length of 55.0 mm is approximately 1313.6125 grams.

To calculate the mass of a cube of iron, we need to know the density of iron and the length of one side of the cube. Given that the density of iron is 7.9 g/cm^3 and the length of one side of the cube is 55.0 mm, we can proceed with the calculation. First, we need to convert the length of one side from millimeters (mm) to centimeters (cm) since the density is given in grams per cubic centimeter. We divide 55.0 mm by 10 to obtain 5.5 cm.

Next, we can calculate the volume of the cube using the formula V = (side length)^3. Substituting the value of 5.5 cm into the formula, we get V = (5.5 cm)^3 = 166.375 cm^3. Finally, we can calculate the mass of the cube using the formula mass = density × volume. Substituting the values of density (7.9 g/cm^3) and volume (166.375 cm^3), we get mass = 7.9 g/cm^3 × 166.375 cm^3 = 1313.6125 g.

In summary, to calculate the mass of the iron cube, we convert the length from millimeters to centimeters, calculate the volume of the cube, and then multiply it by the density of iron. The resulting mass is approximately 1313.6125 grams.

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The laboratory that must have an effluent decontamination system to inactivate liquid wastes is BSL4 (Biosafety Level 4). BSL4 laboratories handle highly dangerous and exotic pathogens that pose a high risk of transmission and have no known treatment or vaccines. The effluent decontamination system is necessary in BSL4 labs to ensure that liquid wastes containing these pathogens are properly treated and inactivated before being discharged from the facility, minimizing the risk of environmental contamination and ensuring public safety.

Liquid is a chemical substance whose nature or form is in the form of a liquid substance. Therefore, every liquid substance will be included in the category of liquid substance form and is denoted or symbolized by the letter (l).

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Answer:

Explanation:

Zn + S ---> ZnS

Mass of Zinc + Mass of Sulphur = Mass of Zinc sulfide ( Law of conservation)

Mass of zinc= 65.4g

Mass of Sulfur =  32.1g

Mass of Zinc Sulfide= (65.4 + 32.1)g

Mass of Zinc Sulfide = 97.5g

Answer:

S 4 O 5

Explanation:

the 4 and 5 are little