1. El sorbitol, utilizado como edulcorante en algunos alimentos "sin azúcar" tiene un peso molecular de 182 g/mol y una composición porcentual en masa de 39,56% de Carbono, 7,74% de Hidrógeno y 52,70% de Oxígeno. ¿Cuál es la fórmula molecular del Sorbitol? 2.- Se determina que una muestra de benzoato de metilo, un compuesto empleado en la elaboración de perfumes, contiene 70,57% de carbono, 5,93% de hidrógeno y 23,49% de oxígeno. Obtenga la fórmula molecular de esta sustancia si su peso molecular es de 136,1 g/mol. 3.- El etilenglicol, la sustancia empleada en los anticongelantes para automóvil, se compone de 38.7% en masa de Carbono, 9.7% en masa de Hidrógeno y 51.6% en masa de Oxigeno. Su masa molar es de 62.1 g/mol. Determine la fórmula molecular. 4.- El compuesto paradicloro se empleó a menudo como bola de naftalina. Si su análisis es 49.02% de C, 2.743% de H, y 48.24% de Cl, y su masa molecular, 147.0 g/mol. ¿Cuál es su fórmula molecular?.

Answer:

Density = 7 g/mL

Explanation:

Given that,

Mass of a sample, m = 14 g

Volume of the sample, V = 2 mL

We need to find the density of the liquid sample. We know that the density of an object is given by :

[tex]d=\dfrac{m}{V}\\\\d=\dfrac{14\ g}{2\ mL}\\\\d=7\ g/mL[/tex]

So, the density of the liquid sample is 7 g/mL.

Explanation:

2/1×1.25

=2.5 mole of NaCl are produced

weight of NaCl produced = moles × molar mass of NaCl

weight of NaCl produced = 2.5×58.5

weight of NaCl produced =146.5 grams

Answer: Carbon dioxide reacts with calcium hydroxide solution to produce a white precipitate of calcium carbonate. Limewater is a solution of calcium hydroxide. If carbon dioxide is bubbled through limewater, the limewater turns milky or cloudy white.

Explanation:

****Isra****

Answer:

b) 4.37x10-3 M. is the correct answer

See the attached page, I've shown the calculation over there

Answer:

d answer is correct

Explanation:

the deeperinto Earth’s crust the higher the pressure that forms mateamorphic rocks

The deeper into Earth’s crust, the higher the pressure that forms metamorphic rocks is the best statement  regarding metamorphic rock formation. Thus, option D is correct.

Metamorphism, a process that changes one type of rock into another, is the source of metamorphic rocks. The original rock is frequently subjected to pressures of at least 100 megapascals and temperatures between 150 and 200 °C, which profoundly alter its physical or chemical composition.

They are commonly used in both architecture and art. Statues and decorative objects like vases are made of marble (Figure). Due to its extreme hardness, quartzite is frequently crushed and used to construct train rails.

Therefore, option D is correct, that the best statement about the creation of metamorphic rocks is that the pressure increases the deeper into the Earth's crust.

Learn more about the metamorphic rocks, refer to:

https://brainly.com/question/19930528

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Answer:

Electroplating is the process of applying a metal coating on another piece of metal (or another conductive surface) through an electro-deposition process. In electroplating, the deposited metal becomes part of the existing product with the plating/coating.

Explanation:

( ◜‿◝ )♡

Answer:

HCl, H2O, and NH3 are the most polar of these, so they won't behave ideally because the particles have greater attractive forces between them. How does the kinetic-molecular theory explain the pressure exerted by gases? ... Particles are always in motion and when they are contained, they are elastic collisions.

The particles have high intermolecular forces, reducing the elasticity of their collisions.

Polar molecules are formed when a high electronegative atom combined with a less electronegative atom.

Ammonia, sulfur dioxide, hydrogen sulfide, are polar gases.

The non-polar gases are inert gas or noble gas.

The polar compounds are asymmetrically array.

Thus, the correct option is 4, The particles have high intermolecular forces, reducing the elasticity of their collisions.

Learn more about polar gases, here:

https://brainly.com/question/25867706

Answer:

B: it has a high heat capacity

Explanation:

When any material has a high specific heat capacity/ heat capacity, it doesn't heat or cool very fast. So water can absorb more heat from the engine and can keep the engine cool or at low temperature for a longer period of time.

Answer:

Al is oxidized

Cu is reduced

Answer:

here

Cu is reduced

and

Al is oxidised

hope this will help you

have a nice day

Answer: Boron

Explanation:

Answer:

There are 3 significant figures on this one.

Answer:

B. The substance is in the liquid state.

Explanation:

The symbol (l)  in a chemical equation represents that the substance is in liquid state which is one of the physical states of a chemical substance.

an element is a substance that cannot be split into simpler substances by a chemical means . for example - hydrogen, oxygen, nitrogen, carbon, iron, aluminium, copper, silver and gold some example of elements.

Answer:

Hello There!!

Explanation:

I believe the answer is nuclear.

hope this helps,have a great day!!

~Pinky~

Answer:

C) Nuclear

Explanation:

Trust the process

Edge 2021

Answer:

sidjnfjdueirb sidisjsiwijejdkdodif

Answer:

energy stored is potential.

Explanation:

Answer:the third one

Explanation:

Answer:

8.8g of Al are necessaries

Explanation:

Based on the reaction, 2 moles of Al are required to produce 3 moles of hydrogen gas.

To solve this question we must find the moles of H2 in 11L at STP using PV = nRT. With these moles we can find the moles of Al required and its mass as follows:

Moles H2:

PV = nRT; PV/RT = n

Where P is pressure = 1atm at STP; V is volume = 11L; R is gas constant = 0.082atmL/molK and T is absolute temperature = 273.15K at STP

Replacing:

1atm*11L/0.082atmL/molK*273.15K = n

n = 0.491 moles of H2 must be produced

Moles Al:

0.491 moles of H2 * (2mol Al / 3mol H2) = 0.327moles of Al are required

Mass Al -Molar mass: 26.98g/mol-:

0.327moles of Al * (26.98g / mol) = 8.8g of Al are necessaries

Answer:

K= 0.0275

Explanation:

The K of a reaction is defined as the ratio between the concentration of products over concentration of reactants powered to its coefficient. In the reaction of the problem, K is:

K = [NH3]² / [N2] [H2]³

Replacing the concentrations in K:

K = [8.62M]² / [9.76M] [6.52M]³

Answer:

The value of K is 0.027.

Explanation:

Chemical equilibrium is a state of a reversible chemical system in which no changes are observed as time passes, despite the fact that the substances present continue to react with each other. That is, the chemical equilibrium is established when there are two opposite reactions that take place simultaneously at the same speed.

The Law of Mass Action says that the product of the equilibrium concentrations of the products raised to their respective stoichiometric coefficients, divided by the product of the concentrations of the reactants in the equilibrium raised to their respective stoichiometric coefficients, is a constant for each temperature, called the equilibrium constant Kc. So, being:

aA + bB ⇄ cC + dD

Then: [tex]Kc=\frac{[C]^{c} *[D]^{d} }{[A]^{a} *[B]^{b} }[/tex]

In this case, the reaction is:

N₂ + 3 H₂ ⇒ 2 NH₃

So, the equilibrium constant is:

[tex]Kc=\frac{[NH_{3} ]^{2} }{[N_{2} ]*[H_{2} ]^{3} }[/tex]

Being:

Replacing:

[tex]Kc=\frac{8.62^{2} }{9.76*6.52^{3} }[/tex]

Solving

Kc= 0.027

The value of K is 0.027.

Answer:

Showing changing colour of the skin who exposed to the radiation.

Explanation:

Chernobyl Episode 4 portray the traumatic effects of the situation on people by showing changing colour of skin of the staff present at nuclear reactor at the time of explosion. The people who exposed to the radiations of the nuclear reactor will die later in the hospital which shows that radiation of nuclear reactor is hazardous and damaging for the skin as well as for the body of humans.

Answer:

The mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

Explanation:

We are given that

Aqueous solution that contains 22.9% NaOH by mass means

22.9 g NaOH in 100 g solution.

Mass of NaOH(WB)=22.9 g

Mass of water =100-22.9=77.1

Na=23

O=16

H=1.01

Molar mass of NaOH(MB)=23+16+1.01=40.01

Number of moles =[tex]\frac{Given\;mass}{Molar\;mass}[/tex]

Using the formula

Number of moles of  NaOH[tex](n_B)=\frac{W_B}{M_B}=\frac{22.9}{40.01}[/tex]

[tex]n_B=0.572moles[/tex]

Molar mass of water=16+2(1.01)=18.02g

Number of moles of water[tex](n_A)=\frac{77.1}{18.02}[/tex]

[tex]n_A=4.279 moles[/tex]

Now, mole fraction of NaOH

=[tex]\frac{n_B}{n_B+n_A}[/tex]

[tex]=\frac{4.279}{0.572+4.279}[/tex]

=0.882

Hence, the mole fraction of NaOH in an aqueous solution that contain 22.9% NaOH by mass=0.882

Answer:

(c) Low temperature, high pressure

Explanation:

Liquefaction of a gas means the conversion of the gas to liquid. To convert a gas to liquid, we have to look a bit at the statements of the kinetic theory of gases.

Gases show ideal behavior within the range of high temperature and low pressure. Under these conditions, minimum intermolecular interactions occur between gas molecules.

However, as the temperature is deceased and pressure in increased, intermolecular interactions become significant and the gas begins to liquefy.

Answer:

subscript is 3

Explanation:

the  subscript is the number that is slightly lower than a # which in this case it's O

this indicates that there's 3 oxygen atoms

Answer:

the answer is 1 ‍♀️

Explanation:

Answer:

See Explanation

Explanation:

The question is asking us about how to determine which compounds are ionic and which compounds are covalent.

First, we must understand that ionic compounds are formed between metals and nonmetals having a large difference in electronegativity.

Secondly, covalent compounds are mostly formed between atoms of nonmetal elements.

If we keep these things in mind, we can see that compounds such as NaCl and CaCl2 are ionic while CO2 and SO3 are covalent.

Answer:

true

Explanation:

Answer:

bismuth

Explanation:

i think if not i am so sorry

To Find :

How many moles are in [tex]7.12 \times 10^{21}[/tex] atoms of iron.

Given :

We know, 1 mole of any element or compound contains exactly [tex]N_A[/tex] ( Avogadro's Number ) atoms/compound .

Now, [tex]N_A = 6.022 \times 10^{23}[/tex]

So, number of moles in given number of atoms are :

[tex]n = \dfrac{6.022 \times 10^{23}}{7.12 \times 10^{21}}\\\\n = 1.18 \times 10^{-2} \ mol[/tex]

Hence, this is the required solution.

Answer:

1. 92.5 ml

2. 3.13 L

3. 524.48 K

Explanation:

1. Using Boyle's law equation:

P1V1 = P2V2

Where;

P1 = initial pressure (atm)

V1 = initial volume (ml)

V2 = final volume (ml)

P2 = final pressure (atm)

Based on the information in question 1: P1 = 3.7atm, P2 = 1atm, V1 = 25 mL, V2 = ?

3.7 × 25 = 1 × V2

92.5 = V2

V2 = 92.5ml

2. Using Charles law equation as follows:

V1/T1 = V2/T2

Where;

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

Based on the information provided: V1 = 3L, V2 = ?, T1 = 25°C = 25 +273 = 298K, T2 = 38°C = 38 + 273 = 311K

3/298 = V2/311

Cross multiply

298 × V2 = 3 × 311

298V2 = 933

V2 = 933 ÷ 298

V2 = 3.13L

3. Using Charles law equation as follows:

V1/T1 = V2/T2

Where;

V1 = initial volume (L)

V2 = final volume (L)

T1 = initial temperature (K)

T2 = final temperature (K)

Based on the information provided; V1 = 1.72 L, T1 = 18°C = 18 + 273 = 291K, T2 = ?, V2 = 3.1L

1.72/291 = 3.1/T2

Cross multiply

1.72 × T2 = 291 × 3.1

1.72T2 = 902.1

T2 = 902.1 ÷ 1.72

T2 = 524.48K

Answer:

1.25 moles of magnesium chloride are produced

Explanation:

Based on the reaction:

Mg(s) + 2HCl (aq) → MgCl₂(s) + H₂(g)

1 mole of magnesium, Mg, reacts with 2 moles of hydrochloric acid, HCl, to produce 1 mole of magnesium chloride, MgCl₂ and 1 mole of hydrogen gas.

To solve this question we have to tak, from the chemical equation:

2 mol HCl = 1mol MgCl₂

That means, the moles of MgCl₂ produced from 2.50mol HCl are:

2.50 mol HCl * (1mol MgCl₂ / 2mol HCl) =

Answer:

Explanation:

The pH of a solution can be found by using the formula

[tex]pH = - log [ { H_3O}^{+}][/tex]

From the question we have

[tex]ph = - log(5.67 \times {10}^{ - 4} ) \\ = 3.2464[/tex]

We have the final answer as

Hope this helps you