Which equation shows ejection of an alpha particle?

Answer:

I'm pretty sure that it is Hydrosphere. Excuse me if it is not.

Explanation:

The mass of hydrogen needed to produce 51.0 grams of ammonia is  ≈ 9.07 grams.

To determine the mass of hydrogen required to produce 51.0 grams of ammonia (NH3) using the Haber process, we need to calculate the stoichiometric ratio between hydrogen and ammonia.

From the balanced chemical equation:

3 H₂(g) + N₂(g) → 2 NH₃(g)

We can see that for every 3 moles of hydrogen (H₂), we obtain 2 moles of ammonia (NH₃).

First, we need to convert the given mass of ammonia (51.0 grams) to moles. The molar mass of NH₃ is 17.03 g/mol.

Number of moles of NH₃ = Mass / Molar mass

                     = 51.0 g / 17.03 g/mol

                     ≈ 2.995 moles

Next, using the stoichiometric ratio, we can calculate the moles of hydrogen required.

Moles of H₂ = (Moles of NH₃ × Coefficient of H₂) / Coefficient of NH₃

           = (2.995 moles × 3) / 2

           ≈ 4.493 moles

Finally, we can convert the moles of hydrogen to mass using the molar mass of hydrogen (2.02 g/mol).

Mass of H₂ = Moles × Molar mass

          = 4.493 moles × 2.02 g/mol

          ≈ 9.07 grams

Therefore, approximately 9.07 grams of hydrogen is needed to produce 51.0 grams of ammonia in the Haber process.

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Based on the given measurements for the length, width, and height of the box;

The height of the box is determined from the data provided as follows:

length, l = 2.2 in

width, w = 3.5 in

height, h = 10.4 in + 1 in

The height of the box = 10.4 + 1 in

Hence, the height of the box = 11.4 in

The volume of the box is calculated as a product of the length, width, and height of the box as determined from the measurements taken.

The volume of the box, V = l × w × h

where;

l is length = 2.20 in

w is the width = 2.91 in

h is the height = 11.4 in

The volume of the box, V = 2.20 * 2.91 * 11.4

The volume of the box, V = 73.0 in³

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Complete question:

Suppose you are trying to find the volume of a box based on the following measurements for the length, width, and height of the box, where the height was measured in two parts.

length, l = 2.2 in

width, w = 3.5 in

height, h = 10.4 in + 1 in

a. Calculate the height (h) of the box first keeping all digits, then rounding to the proper number of significant figures.

b. Calculate the volume (V) of the box using V = l × w × h. Round to the proper number of significant figures.

Better temperatures can growth the quantity of water vapor withinside the air, that could growth the probability of precipitation.

Different factors, inclusive of air pressure, wind, and atmospheric instability, additionally play a function withinside the formation of rain, and the connection among temperature and precipitation may be complicated. The temperature of atmospheric gases could have a substantial effect at the manufacturing of rain. The environment is a complicated device that performs a vital function with inside the Earth`s water cycle, which incorporates the system of precipitation, inclusive of rain. Precipitation takes place while water vapor with inside the air condenses into liquid droplets or ice crystals, which fall to the floor as rain, snow, or hail. The temperature of the environment impacts the quantity of water vapor that the air can preserve. As temperature increases, the air can preserve extra water vapor, that could cause better tiers of humidity. When the air will become saturated with water vapor, it reaches its dew point, and the extra water vapor condenses into liquid droplets or ice crystals, that could shape clouds and subsequently precipitation. In addition, international warming, that's inflicting an growth in atmospheric temperatures, can cause modifications in precipitation styles and extra severe climate events. Understanding the connection among temperature and precipitation is vital for predicting and mitigating the affects of weather change.

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Answer:

I don't know sorry I hope you find what you're looking for

Answer:

I think the answer is G

Explanation:

(electron =negetive) (proton=positive) (neutron=neutral)

I think you understand.

Answer:

mass of X extracted from the aqueous solution by 50 cm³ of ethoxy ethane = 3.33 g

Explanation:

The partition coefficient of X between ethoxy ethane (ether) and water, K is given by the formula

K = concentration of X in ether/concentration of X in water

Partition coefficient, K(X) between ethoxy ethane and water = 40

Concentration of X in ether = mass(g)/volume(dm³)

Mass of X in ether = m g

Volume of ether = 50/1000 dm³ = 0.05 dm³

Concentration of X in ether = (m/0.05) g/dm³

Concentration of X in water = mass(g)/volume(dm³)

Mass of X in water left after extraction with ether = (5 - m) g

Volume of water = 1 dm³

Concentration of X in water = (5 - m/1) g/dm³

Using K = concentration of X in ether/concentration of X in water;

40 = (m/0.05)/(5 - m)

(m/0.05) = 40 × (5 - m)

(m/0.05) = 200 - 40m

m = 0.05 × (200 - 40m)

m = 10 - 2m

3m = 10

m = 10/3

m = 3.33 g of X

Therefore, mass of X extracted from the aqueous solution by 50 cm³ of ethoxy ethane = 3.33 g

Answer: 682 grams

Explanation:

The balanced chemical reaction is:

\(4Fe+3O_2\rightarrow 2Fe_2O_3\)

\(O_2\) is the limiting reagent as it limits the formation of product and \(Fe\) is the excess reagent.

According to stoichiometry :

3 moles of \(O_2\) produce = 2 moles of \(Fe_2O_3\)

Thus 6.40 moles of \(O_2\) will produce=\(\frac{2}{3}\times 6.40=4.27moles\)  of \(Fe_2O_3\)

Mass of \(Fe_2O_3=moles\times {\text {Molar mass}}=4.27moles\times 159.69g/mol=682g\)

Thus 682 g of \(Fe_2O_3\) will be produced from 6.40 moles of oxygen

INFORMATION:

We know that:

- in a sample of liquid argon the pressure is reduced from 10 atmospheres to 1 atmosphere at a constant temp of 100 K

And we must describe the changes argon will have

STEP BY STEP EXPLANATION:

To answer the question we can use the graph of the phase diagram to answer the question

The phase the diagram of the argon using that the normal boiling and freezing points of argon are 87.3 K and 84.0 K, respectively, the triple point is at 82.7K and 0.68 atmosphere would be

If we look for the point when the temperature is 100K and the pressure is 1 atm when can see that the state of argon would be gas. The change that the argon will have would be a change in its state from liquid to gas.

ANSWER:

The change that the argon will have would be a change in its state from liquid to gas. That means the argon vaporizes when the pressure is reduced from 10 atmospheres to 1 atmosphere at a constant temp of 100 K

Answer:

B

Explanation:

this is because solution is the mixture of a solvent and a solute to give you a solution

Answer:

B. The mixture of one substance dissolved in another

Explanation:

Answer:

17 reactions

Explanation:

Answer:

Refer to the picture. I managed to solve a few.

The reaction is given by

\(\\ \rm\Rrightarrow {}^{127}_{56}Ba\longrightarrow {}^{0}_{+1}\beta+{}^{127}_{55}Cs\)

Barium goes underneath beta decay to form Ceaseum

\(\sf {}^{127}_{56}Ba\longrightarrow {}^0_{1}\beta+{}^{127}_{55}Cs\)

Remember

Answer:

V₂ = 100 L

Explanation:

Given data:

Initial volume = 300.0 L

Initial pressure = 55.0 KPa

Final volume = ?

Final pressure = 165 KPa

Solution:

The given problem will be solved through the Boyle's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

55 KPa × 300 L = 165 KPa× V₂

V₂ = 55 KPa × 300 L / 165 KPa

V₂ = 16500 KPa.L/165 KPa

V₂ = 100 L

The two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

A chemical compound is a substance made of numerous similar molecules (or molecular entities) joined by chemical bonds and comprising atoms from various chemical elements. Therefore, a molecule made up of only one type of atom is not a compound. Chemical reactions, which may entail interactions with other molecules, can change a compound into a distinct substance. Atomic bonds may be broken or new ones created during this process.

sample 1 = mass of lead / mass of oxygen = 12.92g/2g = 6.46 .

sample 2 = mass of lead/ mass of oxygen = 34.27 - 14.39/14.39 = 1.38 .

so, the ratios are not the same.

Hence, the two chemical compounds are not the same, because their ratio is not equal. In both samples the composition of lead and oxygen is different.

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In this question, we have the following reaction occurring:

Pb(NO3)2 (aq) + 2 NaI (aq) -> PbI2 (s) + 2 NaNO3 (aq)

The question says that we have:

38.5 mL of Pb(NO3)2

and 0.0628 grams of the precipitate, and the precipitate will be the solid that is formed on the products side, therefore we have 0.0628 grams of PbI2

To find the molarity of Pb(NO3)2, we have the volume in liters, which we already have, and the number of moles, which we will find now, but first we need to find the number of moles of PbI2, we will use the molar mass, 461.01g/mol, and the given mass, 0.0628 grams

461.01g = 1 mol

0.0628g = x moles

x = 1.36*10^-4 moles of PbI2

Now we have the number of moles of PbI2, and according to the molar ratio in the reaction, 1:1 of molar ratio, if we have 1.36*10^-4 moles of PbI2, we will also have 1.36*10^-4 moles of Pb(NO3)2, now using the molarity formula:

M = n/V

M = 1.36*10^-4/0.0385

M = 0.0035

The Molarity of Pb(NO3)2 is 0.0035 M

Answer:

A    ⇒ 20

B    ⇒ 40

C    ⇒ Ca

D    ⇒ 10

E     ⇒ 9

F     ⇒ F

Explanation:

edge 2021

Answer:

the person above is correct

Explanation:

Answer:

1290 Joules

Explanation:

The VSEPR (Valence Shell Electron Pair Repulsion) theory describes the arrangement of electron pairs around a central atom in a molecule, and the VSEPR number represents the total number of electron pairs around the central atom, including both bonding pairs and lone pairs.The VSEPR number can be determined from the Lewis structure of the molecule, which shows the arrangement of atoms and lone pairs around the central atom. The first two digits of the VSEPR number correspond to the number of bonding pairs and lone pairs, respectively, around the central atom.To determine the third digit of the VSEPR number, you need to consider the shape of the molecule. The shape is determined by the repulsion between electron pairs, which is strongest between lone pairs and decreases in the order lone pair-lone pair > lone pair-bonding pair > bonding pair-bonding pair.The third digit of the VSEPR number indicates the shape of the molecule according to the following scheme:1: linear shape2: trigonal planar shape3: tetrahedral shape4: trigonal bipyramidal shape5: octahedral shapeThus, to determine the third digit of the VSEPR number, you need to determine the shape of the molecule based on the number of electron pairs and their relative positions. This can be done by applying the VSEPR theory and considering the repulsion between electron pairs. Alternatively, you can consult a table or chart that lists the shapes associated with different VSEPR numbers.

we would need 2625.13 grams (or 2.62513 kilograms) of NaCl.

To calculate the mass of NaCl required to produce a 26.4 mol/L solution with a 1.7 L volume, we need to use the formula that relates the mass of solute, moles of solute, and molarity:Molarity (M) = moles of solute / liters of solution Rearranging this formula, we get:moles of solute = Molarity (M) x liters of solutionWe can use this formula to find the moles of NaCl needed:moles of NaCl = 26.4 mol/L x 1.7 L = 44.88 molNow, we can use the molar mass of NaCl to convert from moles to grams. The molar mass of NaCl is 58.44 g/mol:mass of NaCl = moles of NaCl x molar mass of NaClmass of NaCl = 44.88 mol x 58.44 g/mol = 2625.13 gTo produce a 26.4 mol/L solution with a 1.7 L volume.

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Answer:

protons-positively charged

neutrons-uncharged

electrons- negatively charged

The differences are protons give out a positive charge neutrons are neutral and electrons give out negative charge.

Another one is the fact they are located on specific separate parts of an atom and each atoms consists a different amount each charge hope this helped :)

Answer: 2/3

Explanation:

Answer:

When you heat ice, its temperature rises, but as soon as the ice starts to melt, the temperature stays constant until all the ice has melted. This happens because all the heat energy goes into breaking the bonds of the ice's crystal lattice structure.

Explanation:

The temperature stop rising while ice melts into water because, the energy is being absorbed to separate the particles. This is because of latent heat of fusion.

The amount of energy needed to convert the solid substance into a liquid substance by modifying its physical effects. It exists also named enthalpy of fusion. When heat exists supplied to ice, it begins melting and heat is used to increase temperature initially. But after the occasional temperature of ice does not vary and the extra heat exists utilized to melt the ice by cracking bonds between crystal lattice of ice.

The temperature stops increasing while the ice melts into the water because the energy exists being absorbed to divide the particles. This exists because of the latent heat of fusion.

Therefore, (D) option is the correct answer.

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ANSWER

The mass of H2O that reacted is 65.88 grams

EXPLANATION

Given that;

The volume of oxygen atom at STP is 40.9L

Follow the steps below to find the mass of water reacted

Step 1; Write the balanced equation of the reaction

Step 2; Find the number of moles of oxygen atom

Recall, that 1 moles of a gas at STP is equivalent to 22.4 L/mol

Let x represents the number of moles of oxygen

The moles of O2 is 1.83 moles

Step 3; Find the number of moles of H2O using a stoichiometry ratio

Let x represents the number of moles of H2O

In the given reaction, 2 moles of water give 1 mole of O2

The number of moles of H2O is 3.66 moles

Step 4; Find the mass of H2O using the formula below

Recall, that the molar mass of water is 18.0 g/mol

Therefore, the mass of H2O that reacted is 65.88 grams

The amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To calculate the amount of copper in moles in a pure copper sheet, we need to use the molar mass of copper and the given mass of the sheet.

The molar mass of copper (Cu) is approximately 63.55 g/mol. This value represents the mass of one mole of copper atoms.

Given that the mass of the pure copper sheet is 27.5 g, we can calculate the number of moles using the following formula:

moles = mass / molar mass

Substituting the values:

moles = 27.5 g / 63.55 g/mol

moles ≈ 0.433 mol

Therefore, the amount of copper in moles in the 27.5 g pure copper sheet is approximately 0.433 moles.

To arrive at this result, we divided the given mass of the sheet (27.5 g) by the molar mass of copper (63.55 g/mol). This calculation allows us to convert the mass of the sheet into the corresponding number of moles of copper.

The result tells us that the 27.5 g pure copper sheet contains approximately 0.433 moles of copper atoms. This conversion to moles is useful in various chemical calculations and allows for easier comparison and analysis of quantities on a molecular scale.

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Explanation:

Atoms are the smallest particle of an element which can exist freely in nature.

The particles present in it are known as sub-atomic particles. They are:-

Answer:

Chemical, Mechanical, and Nuclear Energy

Explanation:

Jeremiah can arrange the materials in the following way to create a model that shows the processes by which water is cycled from a lake into the atmosphere and back to the lake

The following can be a representation of the water cycle;

Fill the glass jar with water to resemble the lake.

Put the lamp next to the jar to symbolize the sun.

Wrap the jar in plastic sheet to imitate the atmosphere.

Turn on the bulb to represent the sun warming the water.

When the water in the jar warms up and evaporates into water vapor, moisture will condense on the plastic wrap.

The water vapor will ascend and collect on the plastic wrap to represent the water vapor rising into the atmosphere.

Water vapor cools as it rises and condenses back into liquid form, as shown by the water droplets gathering on the plastic wrap.

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