Which of the following syntheses are suitable to prepare the given target molecule (as the major product formed? Select all that apply. B con 80 theat OH trẻ 90, CH Talpine 2) OK OH T-BOK BBC e Textbook and Media

The mass percent of oxygen in propionic acid is 43.24%. By dividing the mass of the oxygen in the molecule by the entire mass of the molecule and multiplying by 100, it is possible to get the mass percent of oxygen in propionic acid (C3H6O2).

By dividing the mass of an element in one mole of the compound by the compound's molar mass and multiplying the result by 100, we may determine the mass percent of the element in the compound.

To determine the mass of oxygen in the chemical, subtract. To calculate the percent by mass, divide the mass of each element by the mass of the compound. Calculate after canceling units. By dividing each element's mass by the compound's mass, then multiplying the result by 100%, you may determine each element's percent by mass.

First, find the molar mass of propionic acid:

C3H6O2 = 3 x 12 + 6 x 1 + 2 x 16 = 74 g/mol

Next, find the mass of oxygen in one mole of propionic acid:

2 x 16.00 g = 32.00 g

Finally, divide the mass of oxygen by the total mass and multiply by 100:

(32.00 g / 74 g) x 100% = 43.24%

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Answer:So, the mass of 6.023×1023 6.023 × 10 23 molecules of HCl is 36.46 g.

Explanation:

Answer:

chemical chlorine will have more reaction

There are two types of chemical compound one is covalent compound and another is ionic compound in chemistry. In ionic bonds, electrons are completely transferred. The correct option is option C.

Chemical Compound is a combination of molecule, Molecule forms by combination of element and element forms by combination of atoms in fixed proportion.

Covalent compounds are formed by covalent bond and ionic compounds are formed by ionic bond. Covalent bond is formed by sharing of electron and ionic bond are formed by complete transfer of electron. Ionic bonds are stronger than covalent bonds. The melting and boiling points are higher in ionic compounds.

Ionic bonds are formed by elements whose electronegativity difference is very large. Since K has high electronegativity among all given elements so K is most likely to react with Br.

Therefore, the correct option is option C.

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Fe serves as the limiting reagent since there are less moles of it than there are of S. As a result, when 9.42 g of Fe and 8.50 g of S react, 14.8 g of FeS is produced.

Fe + S = FeS is the equation for the reaction that creates iron sulphide (heat) Page 2 Geological Survey of Maine | 2 One molecule of iron sulphide is created when one iron atom (or one million iron atoms) reacts with one sulphur atom (or one million sulphur atoms) in the presence of heat (or a million molecules of iron sulfide).

As you can see from the processes listed above, Fe is going through an oxidation process in which it loses electrons.

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Answer:

=0.3024dm³

Explanation:

moles of Calcium that reacted = mass of calcium÷ Molar mass

                                                  = 0.54/40

                                                  = 0.0135mol

From the equation, calcium and hydrogen gas are in a ratio of 1:1 hence, the amount of hydrogen formed is 0.0135mol

Volume= amount of substance × Molar volume of a gas

            = 0.0135mol ×22.4dm³

            =0.3024dm³

when 0.540g of calcium reacts with hydrochloric acid  at room temperature and pressure, Then the the volume of hydrogen gas calculated comes out to be 0.3024dm³

Molar volume is a volume that is occupied by one mole of ideal gas at standard temperature and pressure(STP). So at STP this volume comes out to be 22.4dm³

The balanced equation is

\(Ca+HCL\rightarrow CaCl_{2}+H_{2}\)

The ration of  calcium to hydrogen is 1:1.

moles of Hydrogen formed= moles of Calcium reacted

                                                    =mass of calcium÷ Molar mass

                                                    =0.54÷40

                                                    =0.0135mol

Volume of Hydrogen=  moles of Hydrogen × Molar volume of gas

                                   = 0.0135mol ×22.4dm³

                                   =0.3024dm³

Thus volume of Hydrogen formed is 0.3024dm³.

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Answer:

8 .....................

Answer:

The answer is tiny organisms known as cyanobacteria, or blue-green algae. These microbes conduct photosynthesis: using sunshine, water and carbon dioxide to produce carbohydrates and, yes, oxygen.

:-))

Answer:

Cyanobacteria

Explanation:

The answer is tiny organisms known as cyanobacteria, or blue-green algae.

Answer:

do that in calc

Explanation:

mass of cu = 63.55 ÷ 79.55 × 15.9

The best statements that describe the effect of concentration on the rate of a reaction are:

1. Higher concentrations result in more collisions, therefore increasing the rate of a reaction.
2. Higher concentrations result in more effective collisions, therefore increasing the rate of a reaction.

These two statements explain that as the concentration of reactants increases, the number and effectiveness of collisions between particles increase, leading to a higher reaction rate. Increasing the concentration of reactants in a chemical reaction can affect the rate of the reaction. This is because higher concentrations of reactants increase the frequency of collisions between particles, leading to more chances of successful collisions and thus increasing the rate of the reaction.

Statement 1 is correct because higher concentrations result in more collisions among reactant particles, increasing the chances of successful collisions and thus increasing the rate of the reaction.

Statement 2 is also correct because higher concentrations lead to more effective collisions, meaning that a higher proportion of the collisions have enough energy and proper orientation to result in a reaction. This increases the rate of the reaction.

Statement 3 is not correct. Higher concentrations actually result in more effective collisions, not less effective collisions, as explained above.

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Centimeters and millimeters are both interconvertible units to measure length. The conversion factor is as follows:

1 centimetre = 10 millimetres

This means that if a copper wire is 180cm long, the wire would be;

180 × 10 = 1800mm long

Also, the number of 40 mm segments of wire that can be cut from the length is calculated as follows:

1800mm/40mm = 45

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H2 and 02​ are the products of this chemical reaction because of the splitting of water molecule.

The products of this chemical reaction are H2 and 02​ because when the water molecule dissociates or splits hydrogen and oxygen molecules are formed. We know that water is produced from the combination of hydrogen and oxygen.

So we can conclude that H2 and 02​ are the products of this chemical reaction because of the splitting of water molecule.

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The molecular formula of the compound is C8H16O4.

To determine the molecular formula of a compound, you need to use the empirical formula and the molecular weight. The empirical formula, CH4O, gives the ratio of the elements in the compound. The molecular weight, 160, gives the actual mass of the compound.
To find the molecular formula, you need to determine the factor by which the empirical formula needs to be multiplied in order to get the molecular weight. In this case, the empirical formula has a weight of 12 + (4 x 1) + 16 = 32. The factor is 160/32 = 5.
Therefore, the molecular formula is the empirical formula multiplied by the factor:
C8H16O4 = (CH4O) x 5
So the molecular formula of the compound is C8H16O4.

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Answer:

78.75g

Explanation:

The density of diamond is the mass of diamond per unit of its volume. The density of a substance is calculated using the formula:

Density (g/cm^3) = mass (g) / volume (cm^3)

According to the question, the density of diamond= 3.15g/cm^3, volume of diamond= 25cm^3, mass = ?

Hence, to calculate the mass, we say;

Mass = Volume × density

Mass = 25 × 3.15

Mass = 78.75

Therefore, the mass of diamond is 78.75grams.

The given statement "A change in the concentration of the reactant or the product do not change keq" will be false. Because a change in the concentration of a reactant or product will change the value of Keq.

According to Le Chatelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that partially counteracts the stress and reestablishes equilibrium. Changes in the concentration of a reactant or product will alter the concentrations of all species present in the reaction, and thus will disturb the equilibrium.

For example, if the concentration of a reactant is increased, the reaction will shift towards the product side to partially counteract the increase in the concentration of the reactant. This will result in an increase in the concentration of products and a decrease in the concentration of reactants. As a result, the value of Keq will change to reflect the new equilibrium concentrations of reactants and products.

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Answer:

A

Explanation:

Trust me bro :) I just know it

The angle would need to be 180 degrees for the anti-conformation. Additional staggered conformation, known as the anti conformation, is created by adding another 60 rotations. In this structure, the two methyl groups are placed in opposition to one another.

Dihedral, which is the upward angle of an aircraft's wings, makes the lower wing fly at a higher angle of attack than the higher wing, increasing lateral stability in a bank. In reality, it just means that you can fly more autonomously, especially during turbulence.

The angle between an aircraft's left and right wings is known as dihedral in aeronautics. The impact of sideslip on the aircraft's rolling is also referred to as "dihedral."

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A solid that forms and settles out of a liquid mixture is called a precipitate.

The process of changing a dissolved component into an insoluble solid from a super-saturated solution is referred to as precipitation. This process takes place in an aqueous solution. The name given to the solid that forms is precipitate. In the event that an inorganic chemical reaction results in precipitation, the chemical reagent that is responsible for the formation of the solid is referred to as the precipitant. To precipitate in chemistry means to generate an insoluble compound, which can occur either through the reaction of two salts or through a change in temperature that affects the solubility of the compound.

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The total pressure of the gases in the vessel is found out by using the partial pressures of individual gases and adding them up. The total pressure of the gases in the vessel is 1.72 atm.

The Partial pressure of the gases is the individual pressure of the gases present in a vessel containing a mixture of gases. The total pressure can be found out by adding partial pressure of all gases.

Given:

Volume of vessel, V= 32.5L

Mass of Nitrogen gas = 2.8g

Mass of Hydrogen gas = 0.403g

Mass of Argon gas = 79.9g

We know that:

             Molar Mass of Nitrogen gas = 28g

             Molar Mass of Hydrogen gas = 2g

             Molar Mass of Argon gas = 40g

∴ Moles of gas = Given mass / Molar mass

∴ Using the Ideal Gas Equation:

PV = nRT

where, P is the Pressure of gas

V is the volume of gas

n is the moles of gas

R is the Universal Gas constant

T is the temperature

Applying the above equation of all three gases indivudually,

∴ For Nitrogen,

P₁V = n₁RT                    

⇒ P₁ × 32.5 = 2.8/28 × 0.082 × 298

⇒ P₁ = 0.07atm

∴ For Hydrogen,

P₂V = n₂RT                    

⇒ P₂ × 32.5 = 0.4/2 × 0.082 × 298

⇒ P₂ = 0.15 atm

∴ For Argon,

P₃V = n₃RT                    

⇒ P₃ × 32.5 = 79.9/40 × 0.082 × 298

⇒ P₃ = 1.5 atm

∴ Total pressure of vessel, P = P₁ + P₂ + P₃

                                         P = 1.72 atm

The total pressure of the gases in the vessel is 1.72 atm.

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In double replacement reactions, two metals not combine with each other when products are formed because, metals form negative ions and like charges attract. Therefore, option A is correct.

A metal is a substance that exhibits a shiny appearance when freshly processed, polished, or shattered, and conducts electricity and heat rather well. Generally speaking, metals are malleable and ductile.

We use the (s) symbol for solid because salt is an insoluble substance that will not dissolve in water. The silver, fluoride, potassium, and chloride ions would have effectively moved to a new location if there had been no precipitate formation, but they would still be floating around as ions. In this instance, nothing happens.

When two ionic compounds exchange ions and create two new ionic compounds, this is known as a double replacement reaction.

Thus, option A is correct.

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Answer:

c hydrochloric acid

Explanation:

The solubility product (Ksp) of the salt given in question is 1.6x10^-9.

What is solubility product?

The equilibrium constant for a solid material dissolving in an aqueous solution is the solubility product constant, Ksp. It stands for the degree of solute dissolution in solution. A substance's Ksp value increases with how soluble it is.

Suppose we have reaction:

aA(s)↽⇀cC(aq)+dD(aq)

So, the formula to determine solubility product will be:

\(K_{sp} = [C]^c[D]^d\)

Let S mol/L be the solubility of salt. So,

\(S = [BaSo_4] = [Ba^{2+}] = [So_4^{2-}]\)

\(S = 4.0\times10^{-5}\)

we know that,

\(K_{sp} = [C]^c[D]^d = S\times S\)

\(K_sp = (4.0\times10^{-5}) \times (4.0\times10^{-5})\)

\(K_sp = 1.6 \times 10^{-9}\)

Hence, the solubility product is \(1.6 \times 10^{-9}\).

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The amount of heat lost when a 78g piece of copper is placed into a calorimeter and cools from 120 to 40°C can be calculated using the formula Q = mcΔT, where Q is the amount of heat lost, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature of the substance.

Here, we can use the specific heat capacity of copper which is 0.39 J/g°C. Given, Mass of copper (m) = 78 g Change in temperature (ΔT) = 120°C - 40°C = 80°CSpecific heat capacity of copper (c) = 0.39 J/g°CNow, we can calculate the amount of heat lost by the copper using the formula Q = mcΔT.Q = 78 g × 0.39 J/g°C × 80°CQ = 2420.4 J Therefore, the amount of heat lost when a 78g piece of copper is placed into a calorimeter and cools from 120 to 40°C is 2420.4 J.

Explanation:The formula Q = mcΔT is a very useful formula in calorimetry as it allows us to calculate the amount of heat lost or gained by a substance when it undergoes a change in temperature. The mass (m) of the substance, the specific heat capacity (c) of the substance, and the change in temperature (ΔT) of the substance are all factors that affect the amount of heat lost or gained by the substance.

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Answer:

Explanation:

To solve the question above we must first find the pH of the solution using the formula

pH + pOH = 14

pOH = 3.1

So we have

pH + 3.1 = 14

pH = 14 - 3.1

pH = 10.9

Since it's pH is 10.9 the solution is a basic solution since it's pH lies in the basic region.

Hope this helps you

British thermal units (Btu) are a unit used to measure the amount of heat in fuels or other energy sources.

The amount of heat needed to raise a pound of liquid water's temperature by one degree Fahrenheit at the point where water has its highest density (approximately 39 degrees Fahrenheit).

Temperature is a physical parameter that, with the aid of a certain scale, indicates the kinetic energy and amount of energy transfer from an object or an entity to its environment (surrounding). Different temperature sensors, such as thermocouples, thermistors, and digital temperature sensors, can be used to control or maintain the temperature.

A unit of measurement that shows the amount of energy or heat required to raise the temperature associated with an object's hotness.

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