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3 years ago

When naming organic compounds, there are strict rules regarding punctuation.

Chemistry

1 answer:

docker41 [41]3 years ago

8 0

The question is incomplete, the complete question is shown in the image attached to this answer

Answer:

2,3,3-trimethylhexane

Explanation:

IUPAC nomenclature provides a universally acceptable method of naming organic compounds from its structure.

According to this system of nomenclature;

A comma is used to separate two numbers.

A hyphen is used to separate a number from a letter.

Applying these rules, the name of the compound shown in the question should be written as 2,3,3-trimethylhexane.

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It takes a lot of for a rocket to break away from the force of gravity.

elena-14-01-66 [18.8K]

Answer:

Do you play fortnite and yes it does

Explanation:It is said that in order for an object or a projectile to leave Earth's gravitational pull, it must reach Earth's escape velocity, meaning reach a speed of 7 miles per second (~11 km per second).

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4 years ago

Calculate the percent composition by mass of each element in Al(OH)3. Use at least three significant figures.

motikmotik

Answer:

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3 years ago

Read 2 more answers

How to describe the rotation and revolution of the moon??

Alenkasestr [34]

The moon completes one rotation and one revolution every month.

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4 years ago

A liquid mixture of 0.400 mole fraction ethanol and 0.600 methanol was placed in an evacuated (i.e., no air) bottle and after ma

deff fn [24]

Answer:

mole fraction methanol = 0.76

mole fraction ethanol = 0.24

Explanation:

Raoult´s law gives us the partial vapor pressure of a component in solution as the product of the mole fraction of the component and the value of its pure pressure:

PA = X(A) x Pº(A)

where PA is the partial vapor pressure of component A, X(A) is the mole fraction of A, and Pº(A) its pure vapor pressure.

From reference literature the pure pressures of methanol, and ethanol are at 25 ºC :

PºCH₃OH = 16.96 kPa

PºC₂H₅OH = 7.87 kPa

Given that we already have the mole fractions, we can calculate the partial vapor pressures as follows:

PCH₃OH = 0.600 x 16.96 kPa = 10.18 kPa

PC₂H₅OH = 0.400 x 7.87 kPa = 3.15 kPa

Now the total pressure in the gas phase is:

Ptotal = PCH₃OH + PC₂H₅OH = 10.18 kPa + 3.15 kPa = 13.33 kPa

and the mole fractions in the vapor will be given by:

X CH₃OH = PCH₃OH / Ptotal = 10.18 kPa/ 13.33 kPa = 0.76

X C₂H₅OH = 1 - 0.76 = 0.24

4 0

3 years ago

When H2(g) reacts with O2(g) to form H2O(g) , 242 kJ of energy are evolved for each mole of H2(g) that reacts. Write a balanced

algol [13]

Answer:

2H2(g) + O2(g) --------> 2H2O(g). ∆H= -242KJmol-1

Explanation:

A thermochemical equation is a balanced chemical reaction equation that includes the physical states of all reactants and products and the energy change.

As shown above, hydrogen reacted with oxygen in the gas phase to form water, an energy of 242KJ was evolved and we are required to put this in a thermochemical equation using the least coefficients.

Hydrogen reacts with oxygen to form water in the gas phase in a least ratio of 2:1 as shown in the answer.

The term 'energy evolved' in the question means that the reaction is exothermic and energy is evolved. Hence ∆H is negative as shown.

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3 years ago