Consider the reaction below. 2c6h14 19o2 right arrow. 12co2 14h2o how many moles of hexane (c6h14) must burn to form 18.4 mol of carbon dioxide? 1.53 mol 3.07 mol 110. mol 175. mol

Based on the data provided, the empirical formula of the compund is CuCl2.6H20 and the percentage mass of copper is 24.8%.

Empirical formula is a formula showing the simplest ratios in which elements in the compund are combined.

From the data provided:

Mass of Hydrated Copper chloride = 1.00 g

Mass of dehydrated Copper chloride = 20.976 - 20.43 = 0.546 g

Mass of Water = 21.43 - 20.976 = 0.454 g

Mass of Copper = 0.248 g

Masd of Chlorine = 1.00 - (0.454 + 0.248) = 0.298

Mole ratio:

Cu = 0.248/64 = 0.004

Cl = 0.298/35.5 = 0.008

H2O = 0.454/18 = 0.025

Dividing with the smallest value:

Cu = 0.004/0.004 = 1

Cl = 0.008/0.004 = 2

H2O = 0.025/0.004 = 6

Therefore;

Empirical formula = CuCl2.6H20

Percentage mass of copper = 0.248/1.00 × 100%

Percentage mass of copper = 24.8%

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answer is o²

please agree my answer and provide me more question

Considering the Charles' law, the gas would have a temperature of -109.2 C.

Finally, Charles' law establishes the relationship between the volume and temperature of a gas sample at constant pressure. This law says that the volume is directly proportional to the temperature of the gas. That is, if the temperature increases, the volume of the gas increases, while if the temperature of the gas decreases, the volume decreases.

Charles' law is expressed mathematically as:

[tex]\frac{V}{T} =k[/tex]

If you want to study two different states, an initial state 1 and a final state 2, the following is true:

[tex]\frac{V1}{T1} =\frac{V2}{T2}[/tex]

In this case, you know:

You can see that the pressure remains constant, so you can apply Charles's law.

Replacing in the Charles's law:

[tex]\frac{10 L}{293 K} =\frac{6 L}{T2}[/tex]

Solving:

[tex]\frac{10 L}{293 K} T2=6 L[/tex]

[tex]T2=\frac{6 L}{\frac{10 L}{293 K} }[/tex]

T2=163.8 K= -109.2 C

The gas would have a temperature of -109.2 C.

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Answer:

Yes, but it would a tremendous amount of time to do so

Explanation:

You could just spray a ton of hydrogen in the atmosphere and turn the oxygen to water

Lewis structure is the electron dot representation of the atomic and molecular bonds of the molecules. Trigonal planar is the shape of the formaldehyde.

A trigonal planar shape of the molecule is the arrangement of the central atom attached to the other three atoms making them look triangle-shaped.

The attachment of the carbon to the two hydrogens and one oxygen atom can be given by the VSEPR theory. The number of the electron pair in the molecule is 3 making them [tex]\rm sp_{2}[/tex] hybridized and hence have a trigonal planar shape.

Therefore, option D.  trigonal planar is the shape.

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3.33 liter is the volume of 0.200 mole of an ideal gas at 200 kPa pressure and 400 K temperature.

Ideal gas equation for gas will be written as:

PV = nRT, where

P = pressure of gas = 200 kPa

n = moles of gas = 0.2 mole

T = temperature of gas = 400K

R = universal gas constant = 8.314 L.Pa/K.mole

V = to find?

On putting all these values on the above equation, we calculate for V as:

V = (0.2×8.314×400) / 200 = 3.325 = 3.33 L

Hence, option (2) is correct i.e. 3.33 L.

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Answer:

Combination Reactions

Explanation:

That's not Double Replacements because DR is two different things change places with each other.

EX: A-B + C-D ---> A-D + C-B

Cl2 + Cu → CuCl2

This is Combination Reactions because CR is two or more things come together to make a single larger thing.

EX: A + B ---> A-B

Answer:

C D

Explanation:

NOAA airplanes continuously transmit measurements of pressure, humidity, temperature, and wind direction and speed as they fall toward the sea, providing a detailed look at the structure of the storm and its intensity.

Answer:

greater than

Explanation:

The number of atoms in one mole of iron is greater than the one of carbon

Explanation:

This is because carbon has an atomic number of 6 while iron has a greater atomic number

Answer:

they are both the same

Explanation:

they are both 1 mole

0.2 M each of nitric acid and carbonic acid will have the same pH.

The pH of substances is mathematically given as:

pH - -log [H+]

Nitric and carbonic acid dissociates according to the following:

HNO3 ---------> H+ + NO3-

H2CO3 -------> H+ + HCO3-

Thus, both acids ionizes to produce the same number of moles of H+, thus, producing the same pH

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Answer:

see below

Explanation:

All of them are considered reactants because a reactant is a a substance that takes part in and undergoes change during a reaction.

Based on the nature of chemical equilibrium, the system reached equilibrium first at the time T2.

Chemical equilibrium refers to the state of a reversible chemical reaction in which the rate of forward reaction for the the formation is equal to the rate of backward reaction for the formation of reactants.

In the table of the decomposition reaction given above, the system reached equilibrium first at the time T2 when the concentration of the reactant and products were the same.

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Answer:

T3

Explanation:

I've taken the test

The volume occupied by 5.40 mole of O2 is 120.96 L.

The term molar volume refers to the volume of one mole of a gas. According to Professor Avogadro, the volume of one mole of a gas is 22.4 L.

Now, we are asked to find the volume of 5.40 mole of O2.

If 1 mole of O2 occupies a volume of 22.4 L

5.40 mole of O2 occupies 5.40 mole * 22.4 L/1 mole = 120.96 L

The volume occupied by 5.40 mole of O2 is 120.96 L.

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Answer:

hope it will help u

Explanation:

Matk me as brainlist plssaa

Answer:

B

Explanation:

Group number corresponds to number of valence electrons, atomic number corresponds to number of protons and period number corresponds to number of shells

1) the mass of an object gives gravity, the more massive an object is the more gravity it has on the things around it

2)the earth's mass is so much greater than our own that we feel it's gravity stronger than say the moon which has a smaller mass than the earth

3) mass and how far away you are from the object

4)as mass increases so does gravity (sorry I do not remeber the equation but there are some specific ones for different situations between two massive objects)

5) when distance increases, gravity decreases (again I do not remeber by how much)

Answer:

hydrogen bond are found between nucleotides

Answer:

sedimentary rock layer bounded by two stratification planes

Molarity is the molar concentration of the solute dissolved in a volume of a solution. The molarity of the solution prepared by dissolving barium chloride will be 0.085 M.

Molarity is the ratio of the moles of the solute to that of the volume of the solution in Liters. It can be given as,

[tex]\rm Molarity = \dfrac{moles}{Volume}[/tex]

Here, moles of the barium chloride can be given by the mass and the molar mass and volume is given as 0.450 L.

Substituting values in the equation:

[tex]\begin{aligned}\rm Molarity &= \rm \dfrac{mass}{Molar \;mass\times Volume}\\\\&= \dfrac{8}{208.23\times 0.450}\\\\&= 0.085\;\rm M\end{aligned}[/tex]

Therefore, 0.085 M barium chloride is the molar concentration.

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The new volume of the balloon which was initially 3 L is 1.86 L

The new volume of the balloon can be obtained by using the combined gas equation as illustrated below:

P₁V₁ / T₁ = P₂V₂ / T₂

(1.5 × 3) / 293 = (2.5 × V₂) / 303

Cross multiply

293 × 2.5 × V₂ = 1.5 × 3 × 303

732.5 × V₂ = 1363.5

Divide both side by 732.5

V₂ = 1363.5 / 732.5

V₂ = 1.86 L

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Answer:

1.9L !!!!!

Explanation:

Answer:

d. trust me

Explanation:

all the other answers point to why the cup stays hot.

Answer:

the mass of 5moles of He is ; 1 mole =2g therefore 5moles=5*2=10g

The complete empirical formula of the organic compound is C₅H₂.

Empirical formula is the simplest formula of an organic compound. The balanced chemical equation of the given organic compound can be determined using the general formula for balancing oxidation reaction of organic compounds as shown below.

[tex]C_xH_y + (x+ \frac{y}{4} )O_2 = xCO_2 \ + \ \frac{y}{2} H_2O[/tex]

Molecular mass of CO2 = 44 g/mol

mole = reacting mass /molecular mass

mole = 4.4/44 = 0.1

mole = 0.72/18 = 0.04

From the empirical formula, we have [tex][?]_5H_{[?]} = C_5H_{[?]}[/tex]

[tex]0.1 \times n = 5\\\\ n = \frac{5}{0.1} = 50[/tex]

From the result above, if we multiply 0.1 by 50 we will have 5 which is already given to us as C₅.

[tex]x = 0.1 \times 50\\\\x = 5[/tex]

Then multiply 0.04 for y by the same factor.

[tex]y = 0.04 \times 50\\\\y = 2[/tex]

Thus, the complete empirical formula of the organic compound is C₅H₂.

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Answer:

The enthalpy change of the reaction comes out to be -890 Kj Explanation:To calculate the enthalpy of the reaction divided in multiple steps, we use Hess's law. This law states that the heat absorbed or evolved in a given chemical equation remains same whether the process occurs in one step or several steps.To apply this law, the enthalpy of the chemical equation is treated as ordinary algebraic expression and it can be added or subtracted to form the required equation. This means that the enthalpy change of the overall reaction is equal to the sum of the enthalpy changes that occur during intermediate reactions.

Explanation:

Answer:

A few definitions:

1. A river delta is a land-form created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or stagnant water. This occurs where a river enters an ocean, sea, estuary, lake, reservoir, or another river that cannot carry away the supplied sediment.

2. The fourth letter of the Greek alphabet ( Δ, δ ), transliterated as ‘d’.

3. a code word representing the letter D, used in radio communication, mostly in the military

4. variation of a variable or function.

5. a finite increment.

This is not a plagiarized passage this is my knowledge and research.