Calculate the mass of 488 moles of calcium carbonate, CaCO3
Help please!

I think the answer is A. I know it's Planet X.

Answer:

An atom is the smallest particles of an element that takes part in a chemical reaction.

Explanation:

The three tiny particles are usually referred to as subatomic particles. They are Protons, Neutrons and Electrons.The protons and neutrons in the nucleus are collectively referred to as nucleus

Answer:

Magnesium Difluoride

Explanation:

Mg = magnesium

F = fluoride

F2 = difluoride (prefix "di" indicates 2)

The term that refers to over 300 megapascals or more than 50,000 pounds per square inch is "ultra-high pressure."

Ultra-high pressure is defined as a pressure of over 300 MPa or more than 50,000 psi (pounds per square inch). This type of pressure is used in various industries, including oil and gas, water jet cutting, and metal forming, among others.Ultra-high pressure water jetting, for example, uses pressures of up to 40,000 to 60,000 psi to cut through hard materials such as metal and concrete. This type of water jetting can also be used for cleaning and surface preparation in industrial applications.

A pressure of over 300 megapascals (MPa) or more than 50,000 pounds per square inch (psi) refers to an extremely high level of force applied to a specific area. Pressure is defined as the amount of force exerted per unit area. In this case, it means that there is a tremendous amount of force distributed over each square inch of the surface.

To put it into perspective, 300 MPa is roughly equivalent to 43,500 psi. Such pressure levels are typically encountered in certain industrial processes, such as hydraulic systems, heavy machinery, or high-pressure environments like deep-sea exploration or aerospace applications. These extreme pressures can be challenging to handle and require specialized equipment and materials capable of withstanding such forces.

In summary, anything exceeding 300 MPa or 50,000 psi involves an intense amount of force applied over a given area, often associated with demanding industrial or specialized applications.

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Answer:

Explanation:

Strontium chlorate appears as a moist solid or semi-solid slurry of white crystals. May explode under exposure to heat or fire. Used in pyrotechnics

strontium chlorate | Sr(ClO3)2 - PubChem.

Description: Strontium chlorate appears as a ...

Synonyms: STRONTIUM CHLORATE7791-10-...

Molecular Formula: Sr(ClO3)2 or Cl2O6Sr

The equation for the given reaction: 2ClF3(g) + 2 NH3(g) → N2(g) + 6 HF(g) + Cl2(g) ∆H° = -1196 kJ. To calculate the standard enthalpy change of formation (∆H°f) for ClF3, we use Hess's law.

It states that the enthalpy change of a chemical reaction is independent of the route by which the reaction occurs and depends only on the initial and final states. To find the ∆H°f for ClF3, we have to follow the two steps mentioned below:

Step 1: We will break the reactants of the given equation into their respective elements.2ClF3(g) → 2Cl(g) + 3F2(g)     ∆H°1 = ?2NH3(g) → 2N(g) + 6H(g)           ∆H°2 = ?

Step 2: We will rearrange the products obtained in step 1 to give the desired product.Cl2(g) + N2(g) + 6 HF(g) → 2ClF3(g)      ∆H°3 = ?To find the standard enthalpy change of formation for ClF3,

we will sum up all three enthalpies of the above steps. That is, ∆H° = ∆H°3 - ∆H°1 - ∆H°2=-1196 kJ/mol = ∆H°3 - 0 - 0∆H°3 = -1196 kJ/mol The ∆H°f for ClF3 is -199.3 kJ/mol.

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Answer:

Number one is the most acidic, the one in the middle is neutral, and number nine is alkaline.

Answer: The new volume of baloon filled with nitrogen is 2.8 L

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\(\frac{V_1}{T_1}=\frac{V_2}{T_2}\)

where,

\(V_1\text{ and }T_1\) are the initial volume and temperature of the gas.

\(V_2\text{ and }T_2\) are the final volume and temperature of the gas.

We are given:

\(V_1=2.5L\\T_1=298K\\V_2=?\\T_2=333K\)

Putting values in above equation, we get:

\(\frac{2.5}{298}=\frac{V_2}{333}\\\\V_2=2.8L\)

Thus the new volume of baloon filled with nitrogen is 2.8 L

The visual indicator that enough of a drying agent , such as anhydrous MgSO4 or CaCl2 has been added to properly dry an organic solution is that the drying agent will move freely like a powder around the solution .

Because the anhydrous form is hygroscopic ( readily absorbs water from the air ).

What is the work of anhydrous magnesium sulphate ?

Magnesium sulphate is frequently used in the laboratory as an indicator, especially after aqueous work-up . aqueous work-up is a common technique in the lab to get rid of residual impurities after completion of a reaction . for this the organic reaction is cooled to room temperature and mixed with water .specific impurities will then diffuse into the aqueous phase and can be separated with a separatory funnel .

unfortunately some residual water will stay in the organic phase and this can have negative impact for characterization of compound . therefore Magnesium sulphate is added ,which is able to catch the residual water in its crystal lattice .after filtration of the solid magnesium sulfate ,the water is reduced to non-significant amount and the compound ready for further investigation.

Similarly , calcium chloride is strongly hygroscopic ( absorbs water from the environment ) , so it removes moisture from the air ,making it dryer . this results in water  in the substance to be dried to evaporate into the drier air and this cycle repeats until the system reaches an equilibrium.

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The values of all sub-parts have been obtained.

(a) The 6.04 amol/vescile of epinephrine are in each vesicle.

(b) The 3637892 molecules of epinephrine are in each vesicle.

(c) The volume of a spherical vesicle is V = 3.34 × 10⁻¹⁷ L.

(d) The concentration of epinephrine = 0.30 M.

What is molar concentration.

A chemical species' concentration, specifically the amount of a solute per unit volume of solution, is measured by its molar concentration. The number of moles per litre, denoted by the unit sign mol/L or mol/dm3 in SI units, is the most often used molarity unit in chemistry.

(a) Evaluate that how many attomoles (amol) of epinephrine are in each vesicle?

As given,

1 fmol = 10⁻¹⁵ mol

1 amol = 10⁻¹⁸ mol

Number of attomoles epinephrine:

= 151 fmol × (10⁻¹⁵ mol)/ 1 fmol × 1amol/10⁻¹⁸ mol

= 151000 amol

Number of attomoles of epinephrine in each vescile:

= 151000 amol/2.5 × 10⁴ vescile

= 6.04 amol/vescile.

(b) Evaluate that how many molecules of epinephrine are in each vesicle?

Number of molecules present in 1 mol of epinephrine:

     = 6.04/vescile × [(10⁻¹⁵ mol)/ 1 fmol] × [6.023 × 10²³ molecules/1 mol]

     = 3637892

(c) Evaluate the volume of a spherical vesicle of radius 200 nm.

Radius of spherical vescile is 2.00 × 10⁻⁷ m

Volume of the spherical vescile is,

V = 4/3 πr³

Substitute value of r respectively,

V = 4/3 π(2.00 × 10⁻⁷ )³

V = 3.34 × 10⁻²⁰ m³

V = 3.34 × 10⁻¹⁷ L

(d) Evaluate the molar concentration of epinephrine in the vesicle if it contains 10 amol of epinephrine.

Number of moles epinephrine = 10 amol

= 1.00 × 10⁻¹⁷mol

Volume of the spherical vescile = 3.34 × 10⁻¹⁷ L

Concentration of epinephrine = (1.00 × 10⁻¹⁷mol)/(3.34 × 10⁻¹⁷ L)

Concentration of epinephrine = 0.30 M

Hence, the values of all sub-parts have been obtained.

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TEMPERATURE is the measure of the average velocity of the atoms or molecules in a substance.

faster moving molecules = higher temperature

slower moving molecules = lower temperature

An example of this would be water and ice. Water has a higher temperature than ice, therefore it’s molecules have a higher speed and move around more. Ice molecules are pretty much frozen, and move very little.

When mentos and diet coke are mixed, the diet soda explodes

Explanation:

Due to the fact that the mentos are dense, they sink to the bottom of the bottle which gives the diet coke its explosion.

Answers & Explanations:

What happens when Mentos and Diet Coke are mixed?

Mentos sinks rapidly through the liquid, causing a fast, large eruption.

What causes Mentos and Diet Coke to react that way?

The addition of the Mentos leads to the rapid nucleation of carbon dioxide gas bubbles in the Diet Coke, causing them to precipitate out of the solution.

Is the reaction Chemical or Physical?

The eruption is caused by a physical reaction.

How could we prove one way or the other?

We can prove it by using the equation:

\(CO_{2} (aq) = Co_{2}(g)\)

Concentration - 3

Phase - 1

Catalyst - 4

Surface area - 2

In 183 kg of semiconductor with a dopant concentration of 2.00 ppm by mass, there is 0.366 g of dopant present.

To find the amount of dopant present, we can use the formula:

Dopant mass = (Dopant concentration × Total mass of semiconductor) / 1,000,000

Plugging in the given values:

Dopant mass = (2.00 ppm × 183 kg) / 1,000,000

Dopant mass = 0.366 g

Therefore, there is 0.366 g of dopant present in 183 kg of semiconductor with a dopant concentration of 2.00 ppm by mass.

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The first two chemical equations are reversible while the other two are irreversible.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

The first chemical equation was put forth by Jean Beguin in 1615.By making use of chemical equations the direction of reaction ,state of reactants and products can be stated. In the chemical equations even the temperature to be maintained and catalyst can be mentioned.

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Answer:

a. inertia

Explanation:

Inertia means an object will continue its current motion until some force causes its speed or direction to change. The term inertia is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law of motion.

Answer:

sieving, sedimentations, or shaking the soil between two tumblers I guess

The properties of compounds depend on their structure.

When 2 or more atoms link up, they create a molecule. And we can say that a collection of molecules is called a compound.

Matter on Earth is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules.

Answer: B. Matter

The equilibrium constant gives us an idea of the extent of reaction. For the reaction; 2GeCl4(g) = 2Ge(g) + 4Cl2 (g), the equilibrium constant is 1 * 10^-20.

The equilibrium constant gives us an idea of the extent of the conversion of reactants to products in a reaction.

In this case, we know that 2GeCl4(g) = 2Ge(g) + 4Cl2 (g) is the reverse of Ge (g) + 2Cl2 (g) <-> GeCl4 (g) hence we only need to invert the value of the equilibrium constant and raise it to power 2 to have 1 * 10^-20.

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Answer:

alligators protect their offspring by digging a hole where they bury their eggs and stay all the meanwhile on top of the hole protecting their offspring. baby alligators can be eaten by birds and snakes. they for short periods of time take a break to hunt for food. when their hatchling hatch they keep them in their mouth until they're in the water. alligators are good protecting their offspring.

seahorses make the males take care of their baby's till they are born and male seahorses join together in groups to help protect eachother. once the babies are born male seahorses are still together helping raise their pups

Alligators bury their eggs in a hole that they have dug, and they then spend the entire time on top of the hole guarding their young. Therefore, by below given ways animals take care of their offspring.

Offspring refers to the new organism that an organism creates via the act of reproduction. Both birds and snakes can consume young alligators. They stop for brief periods of time to go food hunting. They hold their hatchlings in their mouths until they are in the water after they hatch. Alligators do a superb job of safeguarding their young.

Male seahorses form groups to assist defend one another, and they are required to care for their young until they are born. Male seahorses continue to work together to nurture their young after the babies are born.

Therefore, by above ways animals take care of their offspring.

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Answer:

3.1 moles of Iron(III) Oxide

Explanation:

The equation of the reduction of iron III oxide using carbon is shown;

Fe2O3 + 3CO → 2Fe + 3CO2

From the reaction equation;

1 mole of  Iron(III) Oxide yielded 3 moles of carbon dioxide

x moles of Iron(III) Oxide will yield  9.20 moles of carbon dioxide

x = 9.2 moles * 1 mole/3 moles

x = 3.1 moles of Iron(III) Oxide

Answer:

they are weighted averages of the masses and abundances of all of the isotopes of that element.

Explanation:

i hope this helps you (⁠ ⁠◜⁠‿⁠◝⁠ ⁠)⁠♡

Answer:

it's volume also decrease

If the bus had uniform acceleration, the final velocity of the bus is 14.4 m/s and acceleration is 0.0040 m/s²

According to question

The distance between  Khanikhola and Kathmandu

d = 26 km

= 26000 m

Time,

t = 1 hour

= 3600 seconds

Step-wise explanation:

Consider a is the acceleration of the bus. By using second equation of motion,

d = ut + \(\frac{1}{2} at^{2}\)

Where

u is the initial speed of the bus,

u = 0

a = \(\frac{2d}{t^2}\)

a = \(\frac{2 \times 26000}{3600^2}\)

a = 0.0040 m/s²

By using first equation of motion.

Final velocity, v = u +at

So,

v = 0+0.0040(3600)

v = 14.4 m/s

a = 0.0040 m/s², v = 14.4 m/s.

If the bus had uniform acceleration, the final velocity of the bus is 14.4 m/s and acceleration is 0.0040 m/s².

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The rate of consumption of Ca is 0.0833 g/s.

The rate of consumption of Ca can be determined by dividing the mass of Ca consumed (2.50 g) by the time taken for the reaction to occur (30.0 seconds). This gives us a rate of 0.0833 g/s, indicating that 0.0833 grams of Ca are consumed every second during the reaction at the given temperature.

In chemical reactions, the rate of consumption or production of a substance is typically expressed in terms of the change in concentration over time. In this case, since the mass of Ca consumed is given, we can directly calculate the rate of consumption.

It's important to note that the rate of consumption of Ca may vary with temperature and other reaction conditions. The given rate applies specifically to the given temperature and the specific reaction conditions mentioned in the problem.

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Answer: D

Explanation:

Determine the number of moles of hydrogen atoms in .0885 mol C4H10

Answer:

As the pressure increases the boiling point increases.