consider the following reaction: 2Al + 6HBr --> 2AlBr3 + 3H2

A) when 3.22 miles of Al reacts with 4.96 miles of HBr3, how many moles of H2 are formed

B) what is the limiting reactant​

When Radon-222 (86 protons and 136 neutrons) undergoes alpha decay, it emits an alpha particle, which consists of 2 protons and 2 neutrons.

The result of this process is the formation of a new nucleus with 84 protons and 132 neutrons. This new nucleus corresponds to the element Polonium, which has an atomic number of 84.

Therefore, the daughter product that forms from the alpha decay of Radon-222 is Polonium-218, which has an atomic number of 84 and a mass number of 218. Polonium-218 is also radioactive and can undergo further decay to form other daughter products.

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Considering the definition of Charles's law, the temperature that must be reached to increase the volume of a 100 mL sample of a gas, initially at 300 K, to 200 mL is 600 K.

Charles' law establishes the relationship between the temperature and the volume of a gas when the pressure is constant: If the temperature increases, the volume of the gas increases while if the temperature of the gas decreases, the volume decreases. In other words, this law states that the volume is directly proportional to the temperature of the gas.

Mathematically, Charles's law states:

V÷ T=k

where:

Being an initial state 1 and a final state 2, it is fulfilled:

V₁÷ T₁= V₂÷ T₂

In this case, you know:

Replacing in the definition of Charles' law:

100 mL÷ 300 K= 200 mL÷ T₂

Solving:

(100 mL÷ 300 K)×T₂= 200 mL

T₂= 200 mL÷ (100 mL÷ 300 K)

T₂= 600 K

Finally, the final temperature is 600 K.

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At equilibrium, we can say that any specific water molecule in the sample has an equal probability of existing as a liquid water molecule (H2O(l)) or a gaseous water molecule (H2O(g)).

In a closed container, when the reaction H2O(l) ⇌ H2O(g) reaches equilibrium, it means that the forward reaction (H2O(l) → H2O(g)) and the reverse reaction (H2O(g) → H2O(l)) are occurring at the same rate. At equilibrium, the concentrations of liquid water and gaseous water remain constant.

On a molecular level, the equilibrium indicates that the conversion between liquid water molecules and gaseous water molecules is balanced. This means that any specific water molecule has an equal probability of being in the liquid phase or the gas phase. The equilibrium state does not favor one particular state for individual water molecules, and their distribution between the liquid and gas phases is determined by the overall equilibrium conditions, such as temperature and pressure.

Therefore, at equilibrium, we can say that any specific water molecule in the sample has an equal chance of being a liquid water molecule or a gaseous water molecule.

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Answer: all mass takes up space. everything has mass. Theres a unit of mass called a slug thats not the bug!

Explanation:

The moles of CO₂ gas was generated at 0.01302 mol.

The Ideal Gas Law equation can be used for calculating the moles.

PV = nRT

n = PV/RT

Where:

P = pressure = 1.3 atm

V = volume = 250 mL = 0.25 L

n = number of moles of CO₂ gas

R = ideal gas constant = 0.0821 L·atm/mol·K

T = temperature in Kelvin = (31 + 273) K = 304 K

Substituting the values in the above equation.

n = (1.3 atm)(0.25 L) / (0.0821 L·atm/mol·K)(304 K)

n = 0.01302 mol CO₂ gas

Therefore, 0.0152 moles of CO₂ gas were generated.

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Answer:

i belive its c

Explanation:

Answer:

Thus, the element containing the greatest number of atoms is 12 g He. Thus, the correct option is (4) 12 g He. Note: The number of atoms of a compound is Avogadro's number for 1 mole of compound. The number 6.022×1023 is known as Avogadro's number.

Explanation:

(4)✔️ 12 g He

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Answer:

120gram I think so this is the answer if the answer is correct plz mark me as brainliest.

Two mole of ideal gas is compressed isothermal from 10 to 10,000 atmospheric pressure at 500 degree kelvin then the entropy change in the process is  -114.86 J/K

Ideal gas is the hypothetical gas composed of molecule which follow a some rules in that ideal molecule do not attract or repel to each other and here given data is

Ideal gas = 2 mole

Pressure = P₁ = 10

Pressure = P₂ = 10,000

Temprature = 500 degree kelvin

We have to calculate entropy change in the process =?

We know the entropy change

ΔS = cv ln(T₂/T₁) +nR ln (P₂/P₁)

For isothermal compression temprature constant,

ΔS = nR ln (P₂/P₁)

ΔS = 2×8.314×ln(10/10,000)

ΔS = -114.86 J K⁻

ΔS = -114.86 J/K

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Answer:  (Numbers to the right of the letters are suppose to be to the power of. e.g. 1s^2)

For Sodium (Na): The electron configuration is "1s2 2s2 2p6 3s1". The 3s sublevel has 1 orbital and can hold 1 electron.

For Iodine (I): The electron configuration is "1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5". The s sublevel has 1 orbital and can hold 2 electrons, the p sublevel has 3 orbitals and can hold 6 electrons, the d sublevel has 5 orbitals and can hold 10 electrons, and the 4p sublevel has 1 orbital and can hold 5 electrons.

For Iron (Fe): The electron configuration is "1s2 2s2 2p6 3s2 3p6 4s2 3d6". The s sublevel has 1 orbital and can hold 2 electrons, the p sublevel has 3 orbitals and can hold 6 electrons, and the d sublevel has 5 orbitals and can hold 6 electrons.

Answer:

whether an element id radioactive

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

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From the balanced chemical equation, we can see that 1 mole of P4O10 reacts to form 4 moles of H3PO4. Therefore, we need to find the number of moles of P4O10 to calculate the number of moles of H3PO4.

9 moles of P4O10 reacts with 51 moles of H2O, which means that 9 moles of P4O10 reacts to form 9 moles of H3PO4.

So, the number of moles of H3PO4 formed from 9 moles of P4O10 is 9 mol.

Therefore, the answer is 9 mol.

Answer:

Explanation:

it's 36 my lil sis had the question not long ago so it's 36!! :)

Answer:

1) potential energy of the bond.

2) Linear

3) The electrons are transferred from K to Cl.

4) ClF

5) Oxygen

6) Electrolysis

7) Double displacement

Explanation:

As two atoms approach each other in a bonding situation, the potential energy of the bond is minimized as the internuclear distance of the bonding atoms decreases.

BeH2 has two electron domains and the central beryllium atom is sp2 hybridized. According to valence shell electron pair repulsion theory. A molecule having two regions of electron density will lead to a linear molecule.

KCl is an ionic compound hence there is a transfer of electrons from K(metal) to Cl(nonmetal).

ClF has partial charges because it contains a polar covalent bond. The partial charges arise from the dipole within the molecule. LiF is a pure ionic compound formed by transfer of electrons from Li to F. The species possess full and not partial charges.

When an oxygen atom bonds with another oxygen atom, what has been formed is a homonuclear covalent bond. Since the electro negativity of the both atoms is exactly the same, a pure covalent bond is formed. Recall that polar covalent bonds are formed when there is a significant electro negativity difference between the bonding atoms.

When direct current is passed through certain salt solutions during electrolysis, gases may be evolved and collected at the appropriate electrodes.

A double-replacement reaction is a reaction in which the cations and anions present in two different ionic compounds that are reacting together exchange their positions to form two new compounds on the product side. For instance, look at the reaction shown in question 7 as a typical example of this;

AgNO3 (s) + NaCl (s) → AgCl (s) + NaNO3 (s).

large iguanas are affected by el nino temperatures

because algae do not grow as rapidly with el nino temperatures

survival rates for the larger iguanas drop

if they are bigger than 36 centimeters

the drop happens beginning with sizes around 40 centimeters

Answer:
Acid mine drainage
metal contamination,
increased sediment levels in streams

Explanation:

ACID MINE DRAINAGE
Mine waste, heavy metals and acidic water often end up in streams and rivers.

METAL CONTAMINATION
Heavy metals also affect the biodegradability of organic pollutants, making them less degradable and thus causing double the effect of polluting the environment.

Answer: salt and petroleum

Explanation:

Just took this today and im pretty sure this is the right one

The volume of the oxygen was found to increase linearly with the increase in current.

Electrolysis has to do with the process of the decomposition of the compound by the passage of direct current through the substance.

The quantity of electric current flowing through the water directly correlates to the volume of hydrogen and oxygen created during the electrolysis of water.

The relationship can be seen to be irregular in the case of the volume of the hydrogen from the table but the volume of the oxygen was found to increase linearly with current.

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Answer:

Precipitation falls to the ground as snow and rain. It eventually evaporates and rises back into the atmosphere as a gas. In clouds, it turns back into liquid or solid water, and it falls to Earth again.

Explanation:

Answer:

Precipitation is the process of a compound coming out of solution. It is the opposite of dissolution or solvation. In dissolution, the solute particles separate from each other and are surrounded by solvent molecules. In precipitation, the solute particles find each other and form a solid together

Answer:

Explanation:If the products of a reaction have higher energy than the reactants, then the reaction...

The height of a ramp does not directly determine the strength of the frictional force between a book and an object.

The strength of the frictional force between a book and an object is not directly influenced by the height of a ramp. The nature of the surfaces in contact, the force forcing the surfaces together (normal force), and the coefficient of friction are some of the variables that affect the frictional force between two surfaces.

The coefficient of friction between the book and the object plays a major role in determining the strength of the frictional force.

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Answer:

c

Explanation:

A 20.0 gram sample of alum is heated to drive off all of the water from the solid . 16.4 grams is the mass of the dehydrated

The mass of the dehydrated alum can be found by subtracting the mass of water that was driven off from the initial mass of the sample. Since all of the water is being driven off, we can assume that the mass of water is equal to the difference between the initial mass and the mass of the dehydrated alum.
To find the mass of water, we need to know the formula of alum and the percentage of water in it. The formula of alum is usually given as Al₂(SO₄)³·nH₂O, where n represents the number of water molecules per formula unit. In this case, we don't know the value of n, so we need to look it up or calculate it from the percentage of water in the sample.
Let's assume that the percentage of water in the sample is 18%, which is a common value for alum. This means that for every 100 grams of alum, there are 18 grams of water. Therefore, for a 20 gram sample of alum, the mass of water is:
Mass of water = 20 g x 0.18 = 3.6 g
Now we can calculate the mass of the dehydrated alum:
Mass of dehydrated alum = 20 g - 3.6 g = 16.4 g
Therefore, the mass of the dehydrated alum is 16.4 grams.

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Answer:

Cl2 + 2NaBr --> 2NaCl + Br2

Explanation:

This is a single displacement reaction where one side of the ionic compound switches with the other.

So, Cl2 + NaBr ---> NaCl + Br2

This isolates the Bromine and puts the Chlorine in it's place.

Then, balance out the equation like so and you should get

Cl2 + 2NaBr --> 2NaCl + Br2

The precipitate is iron(II) carbonate based on the solubility of all possible cation and anion combinations and based on its molar mass, 11.6g of it will precipitate.

All the potassium salts and sodium salts except sodium bicarbonate are soluble in water, therefore the precipitate is the iron(II) salt. Iron(II) bromide is soluble in water, on the other hand, iron(II) carbonate is not water-soluble. Therefore iron(II) carbonate will precipitate.

According to the given data, we have;

0.100 L × 1.5 M = 0.15 moles of carbonate ions

0.100 L × 10. M = 0.1 moles of iron(II) ions

As they react in a 1:1 ratio, there is an excess of the carbonate ions and 0.1 moles of Iron(II) will precipitate.

Now by using the molar mass, the mass of the precipitate can be calculated as follows;

M = (56 + 12 + 3 × 16) g/mol

M = 116 g/mol

n = m ÷ M

m = M × n

m = 116 g/mol × 0.1 mole

m = 11.6 g

Therefore, iron(II) carbonate is the precipitate and the mass of this insoluble product is calculated to be 11.6 g.

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Answer:

H - Cl2 +NaBr -> Br2+2NaCl

To solve this problem, we can use the conservation of mass and energy principles. The mass balance equation can be written as:

1.96 kg steam at 20 bar = x kg steam at T₁ and 20 bar + (1-x) kg steam at T₂ and 10 bar

Solving for x gives:

x = 0.9014

Therefore, 0.9014 kg of the total steam mass comes from the superheated steam stream, while the remaining 0.0986 kg comes from the saturated steam stream.

The energy balance equation can be written as:

(1.96 kg)(h₁) = (0.9014 kg)(h₁) + (0.0986 kg)(hf₂) + (product stream)

Solving for h₁, we get:

h₁ = 3449 kJ/kg

Similarly, solving for T₂ using the saturation table for steam at 10 bar gives:

T₂ = 179.9°C

To find T₁, we can use the steam tables to look up the enthalpy of superheated steam at 20 bar and use the energy balance equation to solve for T₁:

(1.96 kg)(3188 kJ/kg) = (0.9014 kg)(3449 kJ/kg) + (0.0986 kg)(hf(T₂)) + (product stream)

Solving for T₁ gives:

T₁ = 511.6°C

If heat is being lost from the blender to the surroundings, our estimate of T₁ would be too high. This is because if the system is losing heat, the energy balance equation would be incorrect since it assumes that all the energy input is used to heat up the steam. Thus, T₁ would be overestimated, and the actual value would be lower.

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The 40%  is the percentage of oxygen in the vessel.

What is pressure ?

As force applied per unit area, pressure is defined. P=FA, where F is the force operating perpendicular to the surface area A, gives it mathematical expression. The pascal (Pa), which equates to a newton per square metre (N/m 2), is the accepted unit of pressure.

What is partial pressure ?

The idea of partial pressure arises from the fact that each individual gas contributes a portion of the total pressure, and that portion is the partial pressure of that gas. In order to describe all the pieces, it is essentially like taking a percentage or fraction of the whole.

Therefore, The 40%  is the percentage of oxygen in the vessel.

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Answer:

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Answer:

Animal cells each have a centrosome and lysosomes, whereas plant cells do not. Plant cells have a cell wall, chloroplasts and other specialized plastids, and a large central vacuole, whereas animal cells do not

Explanation:

Answer: In a mixture, substances are generally just mixed and are not completely dissolved. In a solution, substances are dissolved completely and they cannot be filtered out.

Explanation: