Which organic compound has a branched hydrocarbon group. Select one: a. 2-propanol. b. normal propyl acetate. c. acetone. d. 2-butanone.

Answer:

NaCl may be i guess so....

Answer:

+1.76 V

Explanation:

Ecell = Ecathode - Eanode

= -0.19 - (-1.95) = + 1.76 V

The standard potential of a galvanic (voltaic) cell is +1.76 V

Standard electrode potential of galvanic (voltaic) cell will be calculated by using the following equation as:
Ecell = Ecathode - Eanode

Given that, electrode potential of cathode = -0.19 V

Electrode potential of anode = -1.95 V

On putting values in the above equation, we get

Ecell = -0.19 - (-1.95) = +1.76 V

Hence the resultant electrode potential is 1.76V.

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The molecule shown below is a Saturated Alkane, because are hydrocarbons that have only single bonds and open chains.

Alkanes are acyclic and saturated hydrocarbons, that is, they are compounds formed only by carbon and hydrogen atoms, open chain and with only single bonds between their carbons.

In this case, Saturated alkanes are hydrocarbons whose carbon atoms are linked only with single bonds.

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The molecule shown below is a Saturated Alkane, because are hydrocarbons that have only single bonds and open chains.

Alkanes are saturated hydrocarbons. This means that their carbon atoms are joined to each other by single bonds.

Alkanes are saturated hydrocarbons. This means that contains only carbon and hydrogen atoms bonded by single bonds only. The general formula for an alkane is \(C_nH_{2n+2}\).

In this case, Saturated alkanes are hydrocarbons whose carbon atoms are linked only with single bonds.

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Answer:

Calcular la molaridad de una solución que se preparó disolviendo 14 g de KOH en suficiente  

agua para obtener 250 mL de solución. (masa molar del KOH = 56 g/mol).

Resolución: de acuerdo a la definición de “molaridad” debemos calcular primero, el número de mol de soluto (KOH) que  

se han disuelto en el volumen dado, es decir, “se transforma g de soluto a mol de soluto” por medio de la masa molar,  

así:

56 g de KOH 14 g de KOH

----------------- = ------------------- X = 0,25 mol de KOH

1 mol X

Ahora, de acuerdo con la definición de molaridad, el número de mol debe estar contenido en 1000 mL (o 1 L) de  

solución, que es el volumen estándar para esta unidad de concentración, lo que se determina con el siguiente planteamiento:

0,25 mol X

----------------------- = ------------------------- X = 1 mol de KOH

250 mL de solución 1000 mL de solución

Explanation:

The mass of  sodium lactate required to prepare 8.50 liters of Ringer's lactate is 4.5 g.

From the question, we are told that the solution contains 4.75 mM in sodium lactate (NaC3H5O3). This solution is administered intravenously to trauma victims suffering from blood loss or severe burns.

But we know that;

Number of moles = concentration × volume

And;

Number of moles = mass/molar mass

mass/molar mass =  concentration × volume

Concentration = 4.75 × 10^-3 M

Volume =  8.50 liters

Molar mass of NaC3H5O3 = 112.06 g/mol

Mass =  concentration × volume  × molar mass

Mass =  4.75 × 10^-3 M ×  8.50 liters × 112.06 g/mol

Mass = 4.5 g

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Answer:

1. Dynamic equilibrium is a equilibrium in which the rate of forward direction is equal to the rate of backward direction. It is represented by a right left arrow.

2) Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as \(K_c\)  

For the given chemical reaction:

\(Fe^{3+}(aq)+SCN^-(aq)\rightleftharpoons [Fe(SCN)]^{2-}(aq)\)

The expression for \(K_c\) is written as:

\(K_c=\frac{[[Fe(SCN)]^{2-}]}{[Fe^{3+}][SCN^-]}\)

3) The value of \(K_c\) is 1000 , which means the products are more favoured as compared to reactants and that the equilibrium lies more towards product side.

Answer:

A. on the reactant side

Explanation:

A catalyst will appear in the steps of a reaction mechanism, but it will not appear in the overall chemical reaction

the pH of the aqueous solution is 8.51 with a hydrogen ion concentration of [H+]=3.1×\(10^-9\)M

The pH of the aqueous solution can be calculated using the formula:

pH = -log[H+]

where [H+] is the hydrogen ion concentration of the solution.

Substituting the given value, we get:

pH = -log(3.1×\(10^-9\))

pH = 8.51

An aqueous solution is one in which water serves as the solvent. It is utilised in a variety of applications, including analytical chemistry, biochemistry, and industrial chemistry. It is the most prevalent kind of solution used in chemical reactions. Water serves as both the solvent and the solute in an aqueous solution, where the solute is often a solid, liquid, or gas. Due to its high polarity and capacity to make hydrogen bonds with other molecules, water is an excellent solvent that can dissolve a variety of materials, including polar molecules and ionic compounds. Acid-base reactions, redox reactions, and precipitation reactions are just a few of the numerous chemical processes that take place in aqueous solutions. A variety of variables can have an impact on an aqueous solution's characteristics.

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Answer:

high melting points, dissolve easily in water, conduct electricity when melted.

Explanation:

I'm pretty sure

Answer:

density

Explanation:

density, volume holds fluid, and temperature is negligible

We need collisonal section area

\(\\ \sf\longmapsto \sigma=2d\)

\(\\ \sf\longmapsto \sigma=2(0.20nm)\)

\(\\ \sf\longmapsto \sigma=0.4nm\)

Explanation:

Hey there!

The differences between physical chamge and chemical change are;

Hope it helps...

Given parameters:

Volume of CuSO₄ = 250mL

Concentration of CuSO₄ = 2.01M

Unknown:

Mass of CuSO₄.5H₂O = ?

To solve this problem, we must write the chemical relationship between both species.;

             CuSO₄.5H₂O  →   CuSO₄ + 5H₂O

Now that we know the expression, it is possible to solve for the unknown mass.

First find the number of moles of CuSO₄;

         Number of moles  = Concentration x Volume

Take 250mL to L so as to ensure uniformity of units;

           Volume  = 250 x 10⁻³L

  Input the parameters and solve for number of moles;

        Number of moles  = 250 x 10⁻³  x  2.01 = 0.5mol

From the equation;

             1 mole of CuSO₄ is produced from 1 mole of CuSO₄.5H₂O  

So  0.5 moles of CuSO₄ will be produced from 0.5 moles of CuSO₄.5H₂O

Now let us find the molar mass of CuSO₄.5H₂O = 63.6 + 32 + 4(16) + 5(2x1 + 16)  = 249.6g/mole

Mass of CuSO₄.5H₂O = number of moles x molar mass

                                      = 0.5 x 249.6

                                     = 124.8g

The mass of CuSO₄.5H₂O is 124.8g

There are 5.43 x 10²³ present in  187 grams of XeF₄

The mole is the number of particles(molecules, atoms, ions) contained in a substance  

1 mol = 6.02.10²³ particles

Can be formulated

N=n x No

N = number of particles

n = mol

No = Avogadro's = 6.02.10²³

Moles can also be determined from the amount of substance mass and its molar mass

\(\tt n(mol)=\dfrac{mass(m)}{MW}\)

mass of XeF₄ = 187 g

mol XeF₄ (MW=207,2836 g/mol) :

\(\tt mol=\dfrac{187}{207,2836 g/mol}=0.902\)

Number of molecules :

\(\tt N=0.902\times 6.02\times 10^{23}\\\\N=5.43\times 10^{23}\)

Answer:

a) Total vapor pressure = 68.948 Kpa

b) Mole fraction of A = 41%, mole fraction of B = 59%

Explanation:

Find the given attachments.

The valency of elements tends to decrease as we move down the periodic table of non-metal and metal.

The ability of an element to combine is referred to as valency. It is the number of electrons that an elemental atom loses, gains, or shares with another atom to form a stable configuration of electrons.

The occasional table is organized so that components with comparable valencies are set in a similar gathering. Components in a similar gathering have similar number of valence electrons, which decides their substance properties.

The valency of the elements tends to decrease as we move down a periodic table of metals and non-metals. This is because the number of electron shells, or energy levels, increases as we move down a group. The peripheral electrons in a particle are the valence electrons.

The expanded distance between the core and the peripheral electrons brings about more vulnerable fascination between them. As a result, the atom becomes more reactive and can lose or gain electrons more easily.

For instance, in bunch 1 of the occasional table, the valency of the components diminishes as we drop down the gathering. The valencies of lithium (Li), sodium (Na), and potassium (K) are, respectively, 1, 1, and 1.

This is due to the fact that each possesses one valence electron. Because the outermost electron is further from the nucleus and therefore more likely to be lost or gained, the valency decreases as we move down the group.

In conclusion, as we move down the periodic table, from non-metal to metal, the valency of elements tends to decrease. This is because the nucleus and the outermost electrons are less attracted to one another as the energy levels rise.

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Answer:

The sun provides most of the energy on earth because it is the earth's (and the solar system's) greatest source of heat and light.

Explanation:

The process of photosynthesis in plants uses the energy from the sun and converts that energy to be used for plants.
The burning of fossil fuels produces greenhouse gases which trap the heat in our earth's atmosphere (causing global warming).

There are 2.586 moles of phosphorus in 80.0 g of phosphorus.

This number is known as Avogadro's number, which is approximately 6.022 x 10^23.

What is Moles?

Moles are a unit of measurement used in chemistry to express the amount of a substance. One mole of a substance is the volume of that substance that has the same number of atoms as there are in 12 grammes of pure carbon-12. Other terms for moles include molecules and ions.This number is known as Avogadro's number, which is approximately 6.022 x 10^23.

To calculate the number of moles in 80.0 g of phosphorus, we need to divide the mass of phosphorus by its molar mass. The molar mass of phosphorus is 30.97 g/mol.

Number of moles of phosphorus = 80.0 g / 30.97 g/mol

Number of moles of phosphorus = 2.586 moles

Therefore, there are 2.586 moles of phosphorus in 80.0 g of phosphorus.

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The number of moles of CO2 produced is 0.021 moles

If the estimated volume of the balloon is wrong then the amount of glucose reacted must be more than is stated.

The respiration equation represents the chemical process of aerobic cellular respiration, which occurs in the mitochondria of cells and is the primary way in which cells generate energy in the form of ATP (adenosine triphosphate).

The equation of the reaction is;

C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP

We know that;

Number of moles of glucose = 10 g/180 g/mol

= 0.056 moles

PV = nRT

n = PV/RT

n = 1 * 0.55/318 * 0.082

n = 0.021

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To determine the original pressure of a 750 ml sample of helium (He) at 0 degrees Celsius, we can use the combined gas law, which relates the initial and final conditions of a gas sample. The combined gas law equation is:

(P1 × V1) / (T1) = (P2 × V2) / (T2)

Where:

P1 and P2 are the initial and final pressures, respectively.

V1 and V2 are the initial and final volumes, respectively.

T1 and T2 are the initial and final temperatures, respectively.

Let's assign the given values:

P1 = unknown (original pressure)

V1 = 750 ml (initial volume)

T1 = 0 degrees Celsius (initial temperature)

P2 = 2 atm (final pressure)

V2 = 500 ml (final volume)

T2 = 25 degrees Celsius (final temperature)

Before using the combined gas law equation, we need to convert the temperatures to Kelvin scale by adding 273.15 to both T1 and T2:

T1 = 0 + 273.15 = 273.15 K

T2 = 25 + 273.15 = 298.15 K

Now we can plug in the values into the combined gas law equation:

(P1 × 750 ml) / (273.15 K) = (2 atm × 500 ml) / (298.15 K)

To solve for P1, we can cross multiply and rearrange the equation:

P1 = (2 atm × 500 ml × 273.15 K) / (750 ml × 298.15 K)

P1 = 0.924 atm

Therefore, the original pressure of the 750 ml sample of helium at 0 degrees Celsius is approximately 0.924 atm.

Answer:

16.51%

Explanation:

The reaction that takes place is

Meaning that the white precipitate that formed is AgCl. Now we convert 0.535 g of AgCl into moles, using its molar mass:

Then we convert 0.00373 moles of AgCl into moles of CaCl₂, using the stoichiometric coefficients:

We convert moles of CaCl₂ into grams, using its molar mass:

Finally we calculate the percent of CaCl₂ by mass in the original mixture:

The percent calcium chloride by mass in the original mixture is 16.4%

The equation of the reaction between calcium nitrate and silver chloride is:

\(\mathbf{CaCl_2 + 2AgNO_3 \to 2 AgCl+Ca(NO_3)_2}\)

Given that;

the number of moles of the precipitated AgCl is:

= 0.535 g / 143.32 g/mol

= 0.0037 moles

From the above reaction, If 2 moles of AgCl are formed  by 1 mole of CaCl2

Then, 0.0037 moles of AgCl will form (0.0037 × 1)/2 moles of CaCl2.

0.0037 moles of AgCl will form 0.00185 moles of CaCl2.

Now, we can say that the number of moles of CaCl2 present in the mixture is =  0.00185 moles

Mass amount of CaCl2 present = 0.00185 moles × 110.98 g/mol

Mass amount of CaCl2 present = 0.205 grams

Finally, the mass percentage   \(\mathbf{=\dfrac{0.205}{1.25}\times 100\%}\)

= 16.4%

Therefore, we can conclude that the percent calcium chloride by mass in the original mixture is 16.4%

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Answer:

A. A Lewis acid accepts an electron pair from a base

Explanation:

PLATO

The definition of a Lewis acid is that a Lewis acid accepts an electron pair from a base.

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

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Water is composed of two hydrogen atoms and one oxygen atom

Answer:

can you get a picture that is in higher quality? we can't read what it's saying

Answer:

4.05 g

Explanation:

The balanced chemical equation for the reaction between Fe3+ and Cl2 is:

Fe3+ + 3 Cl2 -> FeCl3

To find the amount of FeCl3 formed, we need to find the limiting reactant and then calculate the amount of product that can be formed.

First, we calculate the number of moles of Fe3+ and Cl2:

Fe3+: 0.375 N * 200 mL = 0.075 mol

Cl2: 0.175 N * 400 mL = 0.07 mol

Since Fe3+ is the limiting reactant, we can use its moles to determine the amount of FeCl3 that can be formed:

0.075 mol Fe3+ * (1 mol FeCl3 / 3 mol Cl2) = 0.025 mol FeCl3

Finally, to find the mass of FeCl3, we use its molar mass:

0.025 mol FeCl3 * 162.2 g/mol = 4.05 g FeCl3.

So, 4.05 g of FeCl3 is formed when 200 mL of 0.375 N Fe3+ is mixed with 400 mL of 0.175 N Cl2.

Answer: umm, yes? DUH

Explanation: touch some falling out of a tap

Answer:

Water is wet,

Explanation:

in the sense of being a liquid which flows easily, because its viscosity is low, which is because its molecules are rather loosely joined together. So it is wet.

Answer:

crystalline and amorphous.

Explanation:

Crystalline solids are the most common type of solid, they are characterized by a regular crystalline organization of atoms that confer a long-range order, Amorphous, or non-crystalline, solids lack the long-range order