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3 years ago

Show dipole dipole force of water and ethyll alcohol.

Chemistry

1 answer:

Alexeev081 [22]3 years ago

6 0

Answer:

Water: H2O --> [H+] + [OH-]

Ethyl alcohol: C2H5OH --> [C2H5O-] + [H+]

Explanation:

Dipole-dipole force is observed when an ionic compound ionizes (forms ions), revealing its slightly positive ion and slightly negatively ion.

The chemical formula of Water is H2O.

H2O --> [H+] + [OH-]

The chemical formula of ethyl alcohol is C2H5OH.

C2H5OH --> [C2H5O-] + [H+]

Note the positive and negative parts of both water and ethyl alcohol as expressed in the equations above.

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How many grams of CO2 are produced by the combustion of 289 g of a mixture that is 28.6% CH4 and 71.4% C3H8 by mass?

serg [7]

845 grams of CO2 are produced by the combustion of 289 g of a mixture that is 28.6% CH4 and 71.4% C3H8 by mass.

Explanation:

The mixture of methane and propane is butane with molecular formula

C4H12

on combustion the balanced reaction is:

C4H12 + 7 O2 ⇒ 4CO2 + 6 H20

Molar mass of butane = 60.13 grams/mole, mass of C4H12 = 289 grams

number of moles of C2H12 is calculated by using the formula:

n = $\frac{mass}{molar mass of 1 mole}$

putting the values to know the moles of C4H12:

n = $\frac{289}{60.13}$

n = 4.8 moles of C4H12

from the balanced equation:

1 mole of C4H12 undergoes combustion to form 4 moles of CO2

thus, 4.8 moles when undergoes combustion will form x moles of CO2

$\frac{4}{1}$ = $\frac{x}{4.8}$

X = 4 X 4.8

x = 19.2 moles of CO2 is formed.

to convert mole into mass, formula used:

mass = number of moles x atomic mass

= 19.2 x 44.01

= 844.99 grams of CO2 is formed.

3 0

4 years ago

A blacksmith heated an iron bar to 1445 °C. The blacksmith then tempered the metal by dropping it into 42,800 mL of

Wittaler [7]

Answer:

6626 g

Explanation:

Given that:

Density of water = 1.00 g/ml, volume of water = 42800 ml.

Since density = mass/ volume

mass of water = volume of water * density of water = 42800 ml * 1 g/ml = 42800 g

Initial temperature of water = 22°C and final temperature of water = 45°C.

specific heat capacity for water = 4.184 J/g°C

ΔT water = 45 - 22 = 23°C

For iron:

mass = m,

specific heat capacity for iron = 0.444 J/g°C

Initial temperature of iron = 1445°C and final temperature of water = 45°C.

ΔT iron = 45 - 1445 = -1400°C

Quantity of heat (Q) to raised the temperature of a body is given as:

Q = mCΔT

The quantity of heat required to raise the temperature of water is equal to the temperature loss by the iron.

Q water (gain) + Q iron (loss) = 0

Q water = - Q iron

42800 g × 4.184 J/g°C × 23°C = -m × 0.444 J/g°C × -1400°C

m = 4118729.6/621.6

m = 6626 g

8 0

3 years ago

I NEED HELP ASAP!!!!!!!<br>Which half-reaction correctly describes an oxidation?

e-lub [12.9K]

<u>Answer</u>:-

I think it’s Na or Br.

4 0

3 years ago

A wittig reaction occurs when 4-methylbenzaldehyde and benzyltriphenylphosphonium chloride are stirred together at room temperat

GarryVolchara [31]

Answer:

See explanation

Explanation:

The wittig reaction is an organic reaction in which an aldehyde or a ketone reacts with a phosphonium ylide to give an alkene. This phoshonium ylide that participates in the reaction is usually generated insitu in the system by reaction of an alky or aryl triphenylphosphonium halide salt with a base(sodium hydroxide is mostly used).

In this particular reaction 4-methylbenzaldehyde and benzyltriphenylphosphonium chloride were reacted together in the presence of sodium hydroxide and the product with the structure shown in the answer was obtained as the major isomer produced in the reaction.

3 0

4 years ago

Someone please help me and thank you:)

Zepler [3.9K]

Guess what? Sasha dies in season 4 they got 360 no scoped to a little kid
Explanation :
It’s legit in season 4 Sasha got clapped and died

6 0

3 years ago

Show dipole dipole force of water and ethyll alcohol.​

Show dipole dipole force of water and ethyll alcohol.