ca(oh)2(aq) + 2hcl(aq)-->2 h2o(l) + cacl2(s) determine the limiting reactant when 1.00 g of each reactant is combined. what is the theoretical yield of h2o?

The molecular weight (g/mol) of a gas if 35.44 g of the gas stored in a 7.50 l tank exerts a pressure of 60.0 atm at a temperature of 35.5 oc is 1.99 g per mole.( By the ideal gas equation).

the ideal gas law: PV = nRT

P=60.0 atm, V = 7.5 L, T = 35.5 oC = (35.5+273) K = 308.5K

n = 35.44g

PV/RT =n

(60.0)(7.5)/0.821)(308.5) = 17.8 mol

M = 35.44/17.8 = 1.99 g/mol.

Boyle's Law tells us, the volume of gas increases as the pressure decreases. Charles' Law tells us, the volume of gas increases as the temperature increases. And Avogadro's Law tell us ,the volume of gas increases as the amount of gas increases.

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because of its milk-like appearance. ... Since the dissociation of this small amount of dissolved magnesium hydroxide is complete, magnesium hydroxide is considered a strong electrolyte. Its low solubility makes it a weak base.

Answer:

D. Ionic compound

Explanation:

Just based on my opinion

Correct me if I'm wrong tnx:<

Dihydrogen monoxide is a covalent compound. Option A is correct.

Covalent compounds are compounds that are held together by covalent bonds. Covalent bonds are formed when two atoms share electrons. In dihydrogen monoxide, the two hydrogen atoms share a pair of electrons with the oxygen atom. This forms a molecule of water, which is a covalent compound.

Ionic compounds are compounds that are held together by ionic bonds. Ionic bonds are formed when one atom donates electrons to another atom. In an ionic compound, the electrons are not shared, but are transferred from one atom to another. The molecular formula for dihydrogen monoxide is H₂O.

The difference between a molecular formula and an empirical formula is that the molecular formula shows the actual number of atoms of each element in a molecule, while the empirical formula shows the simplest ratio of the atoms of each element in a molecule. Option A is correct.

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The concentrations of the reaction's reactants and products must be equal at equilibrium. Following is a description of how CO and H2O react to generate CO2 and H2: CO + H2O <=> CO2 + H2 We can determine the equilibrium CO and H2O concentrations using the available data.

The starting concentrations of CO and H2O are 0.800 M and 0.800 M, respectively, due to the total moles of CO and H2O being 2.00 moles and the total volume being 2.50 L. The equilibrium expression may be used to compute the equilibrium concentrations of CO and H2O: K = [CO2][H2]/[CO][H2O] K = (0.00775)(0.00775)/[CO] may be used to derive the equilibrium constant given that [CO2] and [H2] are both equal to 0.00775 M.

[H2O] K = (0.00775)(0.00775)/[0.0455], when the equilibrium concentrations of CO and H2O are plugged in.[0.0455]. ][0.0455] K = 0.0020 From this, we can calculate the equilibrium concentrations of CO and H2O: [CO] = 0.0455 M [H2O] = 0.0455 M .

The standard free energy change (G°), which can be calculated using the formula G° = -RTlnK, may be used to estimate the sign of G for this reaction. Since K > 1, we may anticipate a spontaneous response, meaning that G will be negative.

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Answer:

whether it is heterotrophic

2020 edg

Answer:

The longer it takes to orbit the sun.

Explanation:

Answer:

A) 3 to 2

Explanation:

The Balmer series refers to all transition series of spectral emission lines of the hydrogen atom in which an electron moves from any higher energy level within the atom down to the energy level with principal quantum number n=2.

The Balmer series was originally calculated using the Balmer formula, this is an empirical equation first deduced by Johann Balmer in 1885.

Hence, a transition from n=3 level to n=2 level is in the Balmer series.

If you reset the simulation to have 5.0 x 10^-17 L of a saturated solution of AgBr and then add enough water to completely fill the beaker while retaining solid AgBr, the concentration of the solution will decrease. This decrease occurs because the volume of the solution increases while the amount of dissolved AgBr remains the same.

When you add water to the beaker containing the saturated solution of AgBr, the volume of the solution increases while the amount of dissolved AgBr remains constant. As a result, the concentration of the solution decreases. Concentration is defined as the amount of solute (AgBr) divided by the volume of the solution. In this case, the volume increases significantly while the amount of AgBr remains the same. Therefore, the concentration of the solution after adding water will be lower compared to the concentration before the water was added. It is important to note that the saturation level of the solution remains the same, as there is still solid AgBr present, but the concentration is diluted due to the increased volume of the solution.

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The final temperature of the water is 33.02°C.

Here's the solution:

Initial temperature of water (T1) = 30°C

Mass of water (m) = 2300g

Specific heat capacity of water (c) = 4.184 J/g°C

Heat released by the reaction (q) = 9.66 * 10^3 J

Final temperature of water (T2) = (T1 + q/mc)

= (30°C + 9.66 * 10^3 J / 2300g * 4.184 J/g°C)

= 33.02°C

The heat released by the reaction is absorbed by the water, causing the temperature of the water to increase.

The final temperature of the water is calculated by adding the heat released by the reaction to the initial temperature of the water and dividing by the mass of the water and the specific heat capacity of water.

Thus, the final temperature of the water is 33.02°C.

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Matter are anything that is made up of atoms. The quantity of matter can be observed only on the basis of mass and volume calculation. Therefore, the correct option is option A.

Matter is a substance that has some mass and can occupy some volume. The matter is mainly used in science. Matter can be solid, liquid or gas.

Matter is anything that is made up of atoms. Anything around us that can be physically seen and touched are matter. Ice, water and water vapors are example of matter.

According to the idea of cross-cutting relationships, a fault or intrusion is newer than the rocks it slices. … As a result, the defect must be the most recent formation visible. Because the intrusion (D) breaks through three sedimentary rock strata, it must be younger.

Therefore, the correct option is option A.

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Answer:

4.9 × 10²³ molecules

Explanation:

Given data:

Number of molecules = ?

Number of moles of oxygen = 0.815 mol

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

0.815 mol  ×  6.022 × 10²³ molecules  / 1 mol

4.9 × 10²³ molecules

If the pH of the environment is such that the pyridine nitrogen of PLP is not protonated, the ability of PLP to catalyze amino acid transformations is significantly reduced. The protonation of the pyridine nitrogen is necessary for the formation of Schiff base intermediates and subsequent enzyme-catalyzed reactions involving PLP.

Pyridoxal 5'-phosphate (PLP) is a coenzyme that plays a crucial role in many enzymatic reactions involving amino acids. PLP acts as a cofactor, facilitating the transfer of functional groups during these transformations. The ability of PLP to catalyze amino acid transformations relies on its protonated state, which is influenced by the pH of the environment.

At physiological pH, the pyridine nitrogen atom of PLP is protonated, meaning it carries a positive charge. This protonation is essential for PLP's interaction with substrates and the subsequent catalytic activity. The positively charged pyridine nitrogen allows PLP to form Schiff base intermediates with amino acids, forming a covalent bond between the substrate and PLP.

However, if a PLP-requiring enzymatic reaction is carried out at a pH where the pyridine nitrogen is not protonated (i.e., under alkaline conditions or high pH), the ability of PLP to catalyze amino acid transformations is greatly reduced. The loss of the positive charge on the pyridine nitrogen disrupts the formation of Schiff base intermediates, thereby inhibiting the catalytic activity of PLP-dependent enzymes.

The protonation state of the pyridine nitrogen is crucial because it enables the nucleophilic attack by the substrate on the carbonyl carbon of PLP, leading to the formation of a transient Schiff base intermediate. This intermediate then undergoes various chemical transformations, such as decarboxylation, transamination, racemization, or other reactions involved in amino acid metabolism.

In summary, if the pH of the environment is such that the pyridine nitrogen of PLP is not protonated, the ability of PLP to catalyze amino acid transformations is significantly reduced. The protonation of the pyridine nitrogen is necessary for the formation of Schiff base intermediates and subsequent enzyme-catalyzed reactions involving PLP.

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The initial volume of the container can be calculated using the ideal gas formula, PV = nRT, where P is pressure, V is volume, n is number of moles, R is gas constant, and T is temperature:

The best illustration of Avogadro's law is when a balloon is inflated. The volume of the balloon grows as you add moles of gas. Similar to how a balloon loses gas and its volume as you collapse it

According to Avogadro's law, all gases with an identical volume and the same temperature and pressure have an equal number of molecules. The volume of an ideal gas at a certain mass.

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Answer:

luster means either sheen/glow or reflected light

Explanation:

luster is the appearance of mineral's surface in terms of light-reflective qualities

Answer:

The amount of energy produced is less than 454 kJ.

Explanation:

I do not know but if am wrong you can correct me. I need your help for business, english and chemistry questions on my profile. So can you and the other person who commented and go on my profile please...? the due date already gone 12 days ago.

In terms of dissolving, granulated sugar and sugar cubes will dissolve faster in hot tea than in iced tea. This is because hotter water (or tea) molecules have more kinetic energy and are more likely to collide with and break apart the sugar crystals, leading to faster dissolution.

Additionally, sugar cubes may take longer to dissolve due to their larger size and surface area, which makes them more resistant to being broken down by the liquid.

Conversely, granulated sugar and sugar cubes will dissolve slower in iced tea than in hot tea. This is because colder water (or tea) molecules have less kinetic energy and are less likely to break apart the sugar crystals, leading to slower dissolution.

Furthermore, sugar cubes may take even longer to dissolve in iced tea due to the fact that the sugar must first absorb heat energy from the liquid to dissolve, and colder liquids have less heat energy available for the sugar to absorb.

It's important to note that other factors, such as stirring and the concentration of the sugar in the liquid, can also affect how quickly sugar dissolves in tea or other liquids.

Additionally, while granulated sugar and sugar cubes will dissolve at different rates, they are chemically identical and will produce the same result in terms of sweetness once dissolved.

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The pH of a solution that has a [OH⁻] is 4.8

Relation between the pH and pOH is shown by the given equation as:

pH + pOH = 14

Given that concentration of OH⁻ ion = 6.217×10⁻¹⁰ M

We know that, pOH = -log[OH⁻]

pOH = -log(6.217×10⁻¹⁰) = 9.2

pH will be calculated as:

pH = 14 - 9.2 = 4.8

Hence value of pH is 4.8.

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Answer:

Oil- Only London Dispersion Forces (the weakest intermolecular force)

Water- London Dispersion, Dipole-Dipole, and Hydrogen Bonding

Answer:

I believe it's neutral

Explanation:

A normal atom has a neutral charge with equal numbers of positive and negative particles. That means an atom with a neutral charge is one where the electrons is equal to the atomic number.

Hope this helpsʕ•ᴥ•ʔ

The two elements have the same number of dots around their chemical symbols in their electron dot diagrams are: (C). P and As

Chemical symbol can be defined as a representation of an element using letters.

Chemical symbol are given to each element distinctively and this is an easier way to represent an element.

Some examples of chemical symbols are; O for oxygen, Zn for zinc, and Fe for iron etc.

In conclusion, The two elements have the same number of dots around their chemical symbols in their electron dot diagrams are: (C). P and As

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The transfer of heat that occurs when 1.31 mol H2 reacts with 0.624 mol O2 is an exothermic reaction, where the reactants release energy as heat. This heat is absorbed by the product and can be used to do work.

When 1.31 mol of H2 reacts with 0.624 mol of O2, heat transfer occurs through an exothermic reaction. Heat is released by the reactants as they react and form a new product.

This release of heat is called the enthalpy of reaction (ΔH).

When the reactants form a product, energy is released from the reactants as heat. This heat is absorbed by the product. This heat transfer can be seen in an energy diagram for the reaction.

The energy released in the reaction can be used to do work. Heat transfer occurs in the form of kinetic energy, which is the energy of motion. This kinetic energy can be used to do work, such as powering machinery.

Heat transfer is important in many chemical and physical processes, such as cooking and cooling.

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The solution can be determined by using stoichiometry principle. The mass of nitrogen required to make 9 kg of nitric acid is 2.8539 kg

The stoichiometry of both step of the reaction:

\(N_{\\2}\) + 3\(H_{2}\) ⇒ 2 \(NH_{3}\) , this 1st step have 96% yield

 \(NH_{3}\) + 2 \(O_{2}\) = \(HNO_{3}\) , this 2nd step have 73% yield

Molecule weigh of:

\(N_{\\2}\) = 28 gram/mole

\(H_{2}\) = 2 gram/mole

\(NH_{3}\) = 17 gram/mole

\(O_{2}\) = 32 gram/mole

\(HNO_{3}\) = 63 gram/mole

Calculate mole of 9kg of nitric acid

9000 gram / 63 gram/mole = 142.8571 mole

With 73% yield from 2nd reaction, mole of    \(NH_{3}\) are:

142.8571 x 100/73 = 195.6947 mole

With 96% yield from 1st reaction, mole of \(N_{\\2}\) are:

195.6947/2 x 100/96 = 101.9243 mole

mass of \(N_{\\2}\) needed are:

101.9243 mole x 28 gram/mole = 2,853.8804 gram = 2.8539 kg

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Answer:

The physical body of human work accosting to Action-Reaction law.

Explanation:

The rule of action-reaction state that an equivalent and reverse reaction occurs with any action.  If one entity imposes force on a second entity, the second responds by exerting an equivalent force on first entity in the same direction. 

A student is given a sample of small mass of baking soda and a sample of vinegar. the carbon dioxide gas id formed. This is a chemical change.

The baking soda and the vinegar will react and form the gas, the gas formed is the carbon dioxide. The formation of the carbon dioxide will leads to the formation of the new bond. the reaction is the exothermic reaction . in exothermic reactions the heat is released during the chemical reaction. it needs the energy to break the baking soda and the vinegar and the energy is released when then carbon dioxide if formed.

This result in a chemical change . in the chemical change the formation of the new substances rakes place.

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The Haber process involves the following steps:

Preparation of reactants; Compression of gases; Mixing of gases; Reaction; Separation of ammonia; Separation of ammonia

The Haber process is a method used to manufacture ammonia (NH3) from nitrogen gas (N2) and hydrogen gas (H2). The process is named after its inventor, German chemist Fritz Haber, who developed the process in the early 20th century.

The Haber process involves the following steps

The Haber process is an important industrial process for the production of ammonia, which is a vital ingredient in the production of fertilizers and many other chemical compounds.

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Answer:

0.3 J

Explanation:

The equation for heat capacity is Q = mcΔT where Q is the heat, m is the mass of the substance, c is the specific heat capacity of the substance and delta T is the change in temperature. Plugging those values into the equation, we have Q = (.500)(0.24)(27.5-25) = 0.3

Covalent bonds = Disulfide bonds. Much more powerful than noncovalent interactions. Disulfide bonds Cross-Link protein chains, hence enhancing stiffness, hardness, and mechanical strength.

The study of genes, genetic variants, and heredity is part of the molecular basis of inheritance. It explains why a child resembles his or her parents. The molecular basis of heredity is built on DNA, RNA, and genetic code.

DNA (deoxyribonucleic acid), sometimes known as the "life molecule," is found in practically all living organisms. It functions as a form of chemical code, including instructions known as genes that govern how the body and its many components grow, develop, operate, and sustain themselves.

The two components that make up the molecular foundation of inheritance are DNA, sometimes known as the molecule of heredity, and RNA. It allows organisms to inherit genetic information from their parents. At each cell division, genetic components are reproduced and transmitted to the daughter cell from the parent cell.

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The most vulnerable species to overexploitation among the given options is option c Tuna.

Overexploitation is the act of exploiting natural resources faster and more than they can be replenished. The process leads to the depletion of the natural resources, and the species becomes vulnerable to extinction.Explanation:Tuna is the species that is most vulnerable to overexploitation among the given options. Tuna is one of the most valuable fish globally and is among the most consumed fish species.

As a result, the tuna population has decreased rapidly due to overfishing.Overfishing is the main reason behind the depletion of tuna populations in many parts of the world. Moreover, tuna is among the species that are on the verge of extinction. Therefore, overexploitation can lead to a drastic decline in the population of tuna and, as a result, making the species vulnerable to overexploitation.The correct answer is c.

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