Calculate the moles of barium phosphate that will react with 1.60 g of aluminum hydroxide. you need to write and balance the equation, then solve it.

First, we need to use the balanced equation to determine the initial moles of \(H_{2}O\) and \(O_{2}\). Since the coefficients are both 5.00, we know that we have 5.00 moles of each.

We need to use stoichiometry to determine the limiting reactant and the moles of \(H_{2}O_{2}\) that should be formed at equilibrium. Since the coefficients are both 2, we know that we need 2.50 moles of each reactant to form 4.37 moles of \(H_{2}O_{2}\). However, we only have 5.00 moles of each reactant, so \(H_{2}O\) is the limiting reactant and only 2.50 moles of \(H_{2}O_{2}\) should be formed at equilibrium. Using the equilibrium concentrations, we can set up the equilibrium expression for Kc: Kc = \(H_{2}O^{2}\)^2[\(O_{2}\)] / [\({H_{2} O_{2} }^{2}\)]. Plugging in the equilibrium concentrations (which can be calculated from the initial moles and the moles of H2O2 formed), we get Kc =\((2.50/2.50)^{2}\)(2.50/2.50)] / [\((4.37/2.50)^{2}\)]. Simplifying, we get: Kc = 5.8x\(10^{-2}\)

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Answer:

a hypothesis

Explanation:

A hypothesis is a statement that is supposed or assumed before conducting any experiment. It is the assumption that is made on the basis of certain knowledge and controlled evidence in the initial time of the experiment. The initial assumption helps in taking the experiment or the investigation further. The truth is not ascertained in the initial phase rather the completion of the investigation is necessary to make a hypothesis turn into a theory.  

In the given situation, the statement given is a hypothesis because the use of the warm water for the growth of the plants is the assumption made with respect to the metabolism effect on the humans.

Answer:

A) Nuculear

Explanation:

Nuclear powerplants are danguorous for the ecosystem and incase of an exsplosion nuclear is the hardest to recover from. Especially if you know the story about Chernobyl blow up. many animals began to grow diffrent mutations and evryone had to evacuate from having desieses and mutations.

Hoped this helped...

The balanced chemical equation of the reaction between aluminum metal with aqueous sulfuric acid to form aqueous aluminum sulfate and hydrogen gas is 2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂.

A chemical equation is a symbolic representation of a chemical reaction where reactants are represented on the left, and products on the right.

According to this question, aluminum metal reacts with aqueous sulfuric acid to form aqueous aluminum sulfate and hydrogen gas.

This reaction will be balanced only if the atoms of each element on both sides of the equation are the same. The chemical reaction is as follows:

2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂.

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Answer:

Dr. Moore can explain that it is continental drift.

Explanation:

continental drift is the phenomenon due to which all the continents are moving towards each other, due to this continental drift stundents afraidthat some day these continents will collide leading to catastrophe.

But this is not gonna happen in a snap, this needs a lot of time, this will take hundreds of years and even more. So there is nothing to be afraid of till then humans will find some or the other way to manage this. Plus as I said this process is very slow so there are very less chances that this could lead us to any kind of chaos or anhilation.

(Btw, this isn't my work, it's just that someone already answered this same question, and they didn't answer yours so I thought I'd give it to you.)

The gas that could be identified as gas B is helium(He).

We know that the rate of diffusion of a gas is inversely proportional to the square root of the molar mass of the gas. If we then have two masses of gas then we can write;

R1/R2 = √M2/M1

Given that;

R1 = rate of diffusion of gas 1

R2 = rate of diffusion of gas 2

M2 = molar mass of gas 2

M1 = molar mass of gas 1

We are told that Gas 2 diffuses 3.16 times faster than gas 1. We now know that;

1/3.16 = √M2/40

(1/3.16)^2 = M2/40

1/9.99= M2/40

40 = 9.99 M2

M2 = 40/9.99

M2 = 4

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Answer:

\(3.5\) pill need to taken for completing dosage of \(875\) mg

Explanation:

Total dosage of medicine to be taken in a day

\(= 2 * 875 \\= 1750\)mg

Total weight of one pill \(= 250\) mg

Number of pills required is equal to total dosage of medicine divided by the weight of one pill.

Hence,

Number of pills

\(= \frac{875}{250} \\= \frac{175}{50} \\= \frac{35}{10} \\= 3.5\)

Answer:”the water goes through the vines and sucks it up.”

Explanation:

The water goes through the vines and sucks it up.”

Bulk properties, such as the boiling and melting temperatures of liquids, are determined by intermolecular forces.

When molecules in a liquid have enough thermal energy to overcome the forces holding them together, called intermolecular forces, bubbles of vapor are created inside the liquid. Similar to liquids, solids melt when their molecules gather sufficient heat energy to dislodge the intermolecular interactions holding them in place.

Electrostatic in nature, intermolecular forces result from the interaction of positively and negatively charged entities. Intermolecular interactions are the total of both attracting and repulsive elements, similar to covalent and ionic connections.

Therefore, The water goes through the vines and sucks it up.”

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Answer:

Electrons are discharged by the positive ions on the skin surface.

Answer:

The correct answer is B) El Nino/La Nina

Explanation:

El Nino and La Nina are climate patterns that can cause modification to the global weather conditions. They are present in the Pacific Ocean.

El Nino is Spanish for Little Boy. It is characterised by warm weather, while La Nina in Spanish refers to Little Girl. La Nina is characterized by cool/cold currents.

Cheers

Answer:

temperature

Explanation:

Deuterium oxide (D2O), also known as "heavy water," is a chemical compound made up of two atoms of the 2H isotope of hydrogen.

The total deuterium content of molecules that have undergone hydrogen-deuterium exchange can be detected using mass spectrometry. It is often thought to provide an accurate measurement of non-exchangeable hydrogen atoms only due to the sample preparation required.

Chemically speaking, D2O is an isotope of regular H2O because it contains deuterium atoms instead of regular hydrogen atoms, which do not contain neutrons. Heavy water ice cubes sink in a glass of regular water, indicating that heavy water is 10% denser than H2O due to the additional neutrons.

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The chemical compound deuterium oxide (D2O), commonly referred to as "heavy water," is made up of two atoms of the hydrogen isotope 2H.

Mass spectrometry can be used to identify compounds that have undergone hydrogen-deuterium exchange by their total deuterium concentration. Since sample pretreatment is necessary, it is frequently believed to offer an accurate measurement of non-exchangeable hydrogen atoms alone.

D2O is an isotope of regular H2O chemically speaking since it contains deuterium atoms instead of typical hydrogen atoms, which are neutron-free. Ice cubes made of heavy water sink in a glass of ordinary water, proving that heavy water has a 10% higher density than water because it contains more neutrons.

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An electron will emit energy in quanta when its energy state changes from 4p to 3s.

When a quantum mechanical system or particle is bound, or spatially constrained, it can only take on specific discrete energy values, or energy levels. As opposed to classical particles, which can have any energy level, this. The phrase can also refer to the energy levels of nuclei or the vibrational or rotational energy levels in molecules. The term is most frequently used to describe the energy levels of the electrons in atoms, ions, or molecules that are confined by the electric field of the nucleus. A system with such distinct energy levels is said to have a quantized energy spectrum.

An electron shell, also known as a primary energy level, is the orbit of one or more electrons around the nucleus of an atom in chemistry and atomic physics. The "1 shell" (also known as the "K shell") is the shell that is closest to the nucleus. The "2 shell" (also known as the "L shell"), "3 shell" (also known as the "M shell"), and so forth are the shells that are further and more away from the nucleus. The shells are either labelled alphabetically with X-ray notation letters or with the primary quantum numbers (n = 1, 2, 3, 4...) (K, L, M, N...).

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The following terms are required to complete the blanks in the given sentence:

Condensation, sinks, column, condensation nuclei, pollen, cloud, convergence, cooler air masses

Condensation can form as warm moist air rises, expands, and cools, and cooler air sinks in a column. Water vapor in the air condenses on condensation nuclei such as dust or pollen. As more and more droplets collect, a cloud is formed. Clouds also form from convergence where moist air comes in contact with a cooler air masses and rises. Another type of cloud forms when air masses of different temperatures collide.

Condensation is the process of conversion of water vapor into a liquid state or solid state. It is the opposite of evaporation where liquid water changes into a gaseous state. The air cannot hold all the water vapor present in it, so the water droplets stick to the solid objects and condense to form tiny droplets that join together to form clouds.

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The ionization constant of H₂S is approximately 1.0 x 10⁻⁷.

The ionization constant, also known as the acid dissociation constant (Ka), is a measure of the extent to which an acid dissociates in water. It indicates the degree of ionization of an acid and is typically expressed as the equilibrium constant for the reaction between the acid and water.

In the case of H₂S (hydrogen sulfide), it is a weak acid that can partially dissociate in water to produce hydrogen ions (H⁺) and sulfide ions (HS⁻). The ionization reaction can be represented as follows:

H₂S ⇌ H⁺ + HS⁻

The ionization constant (Ka) represents the equilibrium expression for this reaction. The value of Ka determines the relative strength of the acid. For H₂S, the ionization constant is approximately 1.0 x 10⁻⁷, indicating that it is a weak acid.

This value indicates that H₂S only partially ionizes in water, with a small fraction of H₂S molecules dissociating into H⁺ and HS⁻ ions. The majority of H₂S remains in its molecular form.

It is important to note that the ionization constant can vary depending on factors such as temperature and concentration. The given approximation is a typical value at standard conditions.

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Concentration - 3

Phase - 1

Catalyst - 4

Surface area - 2

Answer:

Explanation:

pure chemical substances and element.

All elements are pure. If this sample of copper had been impure, we would call it a mixture, not an element.

Answer:

B

Explanation:

The vapor pressure of \(CH_3OH\)  at 25 °c in mm hg for the process, \(CH_3OH(l)---CH_3OH(g)\)CH3OH(l) CH3OH(g) ∆g° = 4.30 kj/mol at 25 °c is 134 mm Hg

The \(\Delta G^{\circ}=-R T \ln K_{p}\) where T, delta G and R is the temperature , Gibbs free energy and gas constant respectively

\(4300=-8.314X298 lnKp\)

\(lnKp=\frac{-4300}{8.314x298}\)

\(lnKp=-1.74\)

\(Kp=e^{-1.74} \\\)

\(Kp=0.176\)

The expression for \(Kp\) is given as follows;

\(k_p=\frac{\left[P_{\mathrm{CH}_3 \mathrm{OH}}\right]}{\left[\mathrm{P}_{\mathrm{CH}_3 \mathrm{OH}}\right]}\)

The vapor pressure is given as follows;

\(\mathrm{PO}_{\mathrm{CH}_3 \mathrm{Oh}}=7.60 \mathrm{mmhg}\)

\(P_{\mathrm{CH}_3 \mathrm{OH}}=K_P \times P_{\mathrm{CH}_3 \mathrm{OH}}\)

\(\mathrm{P}_{\mathrm{CH}_3 \mathrm{OH}}=0.176 \times 760 \mathrm{~mm} \mathrm{hg}\)

\(P_{\mathrm{CH}_3 \mathrm{OH}}=134 \mathrm{mmHg}\)

The property of a material to change into the gaseous form, and it increases with temperature is called vapor pressure.

The temperature at which the vapor pressure at the surface of a liquid becomes equal to the pressure exerted by the surroundings is called the boiling point of the liquid

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1) The energy level of the electron

2) The symbol is n

3) The shells correspond to the energy levels

4) The 4th shell has more energy than the 3rd shell

We know that the term quantum number has to do with the position of the electron in the atom. According to the Bohr model of the atom, the electrons that are found in the atom are said to have a specific energy and the electron can move from a lower to a higher energy level by the absorption of energy.

Given the fact that the principal quantum number can also be designated as energy levels or shells, we know that all the electrons that can be found in the atom are said to be classified into certain specific principal quantum levels.

Thus, when we have electrons in an atom, the most basic quantum number is the principal quantum number.

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The volume of a gas remains constant. Using the ideal gas law, when the temperature changes from 44 K to 88 K, the final pressure is twice the initial pressure. Similarly, when the temperature changes from 26.4 °C to 59.5 °C, the final pressure is 1.17 times the initial pressure.

We can use the ideal gas law to solve this problem, assuming that the amount of gas and volume are constant:

PV = nRT

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

Since the volume is constant, we can write:

P1/T1 = P2/T2

where P1 is the initial pressure, T1 is the initial temperature, P2 is the final pressure, and T2 is the final temperature.

(a) If the temperature changes from 44 K to 88 K, we can write:

P1/44 = P2/88

Simplifying and solving for P2/P1, we get:

P2/P1 = 2

So the final pressure is twice the initial pressure.

(b) If the temperature changes from 26.4 oC (299.55 K) to 59.5 oC (332.65 K), we can write:

P1/299.55 = P2/332.65

Simplifying and solving for P2/P1, we get:

P2/P1 = 1.17

So the final pressure is 1.17 times the initial pressure.

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Answer:

they ate lelo pudina hahahha

Option E) all of these metals can be obtained by electrolysis of their molten chloride salts.

The metal that is produced by electrolysis of its molten chloride salt is option e. All of these metals: Mg (magnesium), Ca (calcium), Sr (strontium), and Ba (barium) can be produced through the electrolysis of their respective molten chloride salts.

Electrolysis involves the decomposition of a compound using an electric current. In this case, the molten chloride salt of each metal serves as the electrolyte, and the metal ions are reduced at the cathode to form the respective metal.

For example, in the electrolysis of molten magnesium chloride (MgCl2), magnesium ions (Mg2+) are reduced at the cathode to produce molten magnesium metal (Mg). Similarly, the electrolysis of molten calcium chloride (CaCl2), strontium chloride (SrCl2), or barium chloride (BaCl2) results in the production of molten calcium, strontium, or barium metal, respectively.

Therefore, all of these metals can be obtained by electrolysis of their molten chloride salts. Option E) is correct.

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Equation 4 is given as:pH = pKa + log ([A-]/[HA])Where pH is the negative log of the hydrogen ion concentration and pKa is the negative log of the acid dissociation constant. [A-] is the concentration of the conjugate base and [HA] is the concentration of the acid.

Using equation 4, the buffer capacity of water can be calculated using the following formula:

β = dC/dpH

where β is the buffer capacity, dC is the change in concentration of the acid or the base, and dpH is the change in pH per unit concentration.

To calculate the buffer capacity of water, we need to know the acid dissociation constant (Ka) of water. The Ka of water is 1.0 x 10-14 M at 25°C.

Therefore, the pKa of water is 14.0 at 25°C.We can assume that the concentration of water is constant, so the change in concentration of water (dC) is zero. Therefore,β = dC/dpH = 0/dpH = 0The buffer capacity of water is zero because water cannot act as a buffer since it is a neutral substance with no acid or base properties.Showing the work for Answer 14:β = dC/dpHwhere dC = 0 (since the concentration of water is constant) and dpH = 1Therefore,β = 0/1 = 0M/pHThe buffer capacity of water is zero M/pH.

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36.607 kJ of heat are needed to warm 12.0 g of ice.

By deducting the total enthalpies of all the reactants from the total enthalpies of the products, the reaction enthalpy is determined. According to mathematics, tH is equal to the sum of the enthalpies of the reactants and the product.

The following formula can be used:

q1 = m ×Cice × ΔT1

When we change the values, we obtain:

q1 = 12.0 g ×2.09 J/g⋅∘C × 11.0°C

q1 = 273.48 J or 0.27348 kJ

We must apply the following formula to melt the ice at 0 degrees Celsius:

q2 = m * ΔHfus

where m is the mass of the ice (12.0 g), q2 is the necessary heat, and Hfus is the heat of fusion for water (334 J/g).

When we change the values, we obtain:

q2 = 12.0 g × 334 J/g

q2 = 4008 J or 4.008 kJ

We can use the formula below to warm the water from 0°C to 100°C:

q3 = m * Cwater * ΔT2

When we change the values, we obtain:

q3 = 12.0 g × 4.18 J/g⋅∘C * 100°C

q3 = 5025.6 J or 5.0256 kJ.

The following formula must be used to bring the water to a boil at 100°C:

q4 = m * ΔHvap

When we change the values, we obtain:

q4 = 12.0 g × 2257 J/g

q4 = 27,084 J or 27.084 kJ.

Lastly, we may apply the following formula to raise the steam's temperature from 100°C to 109°C:

q5 = m × Csteam × ΔT3

When we change the values, we obtain:

q5 = 12.0 g × 2.01 J/g⋅∘C × 9°C

q5 = 216.36 J or 0.21636 kJ

The total heat required is the sum of all these values:

Q1 + Q2 + Q3 + Q4 + Q5 = Qtotal

Qtotal = 0.21636 kJ +4.008 kJ +5.0256 kJ +27.084 kJ.

qtotal = 36.607 kJ

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Explanation:

This is because the hydrogen bonding in water H2O is stronger than that is hydrogen sulfide H2S.

Answer:

on your own?

Explanation:

it sticks better in your head once you fail

im sorry i dont know this i really need points for my maths test

Answer:

It depends on the situation. Most things are better learning from others because others can see what you cant. On the other hand there are some situations were only you can learn from. Take pain as an example. Others can talk about pain as much as they would like but your body dosent know what that feels like unless it feels it on its own and learns from it. An example of learning from others would be smarts such as math, science, history and so forth.

Explanation:

Answer:

1

Explanation:

if 33 the answer would be 92 but u think then 92 32 1

Explanation:

Yes, that is correct. The formula weight of a compound is the sum of the atomic weights of all the atoms in the compound's chemical formula. To determine the percentage by mass of an element in a compound, you can use the molar mass of that element and divide it by the formula weight of the compound, then multiply by 100. In the case of a hydrated compound, the mass of the water molecules will dilute the percentage of the other elements, resulting in a lower percentage for the element of interest.

According to the chemical formula: Potasium (s) + Br2(g) KBr(s), 383.18 grams of KBr will be created.

Purchase stock geometry starting at 356g of KBR times. A mole of Kbr is equal to 119 g Kbr multiplied by two. Alright, one mole of KCL for two modes of Kbr times 74.55g Casey Albert. Hence, K C L mass. That was too 223 g KCL here.

We must first balance the chemical equation to ascertain the reaction's stoichiometry in order to answer this problem:

2K(s) + Br2(g) → 2KBr(s)

The ideal petrol law can be used to determine how many moles of Br2 are reacted in 35 litres of Br2 at STP: PV = nRT

where P = 1 atm (at STP), V = 35 L, n = ?, R = 0.0821 L·atm/(mol·K), and T = 273 K.

Solving for n, we get:

n = PV/RT = (1 atm)(35 L)/(0.0821 L·atm/(mol·K))(273 K) = 1.61 mol

As a result, 3.22 mol of K and 1.61 mol of Br2 react (since 2 moles of K reacts with 1 mole of Br2). The molar mass of KBr (119 g/mol) can be used to compute the mass of KBr generated.

mass of KBr = (3.22 mol KBr) x (119 g/mol KBr) = 383.18 g

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