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3 years ago

How many hydrogen atoms are present in a hydrocarbon chain of five carbon atoms with two double bonds and two single bonds?

Chemistry

1 answer:

VashaNatasha [74]3 years ago

7 0

Is it multiple choice? if not, five.

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You need a 70% alcohol solution. On hand, you have a 135 mL of a 20% alcohol mixture. You also have 85% alcohol mixture. How muc

frutty [35]

To obtain the desired solution:

450 mL of 85% alcohol solution is needed to obtain the desired solution.

Calculation:

Let x be the amount of the 85% alcohol required

The volume of the resulting 70% alcohol solution will then be = x + 135 ml

135 mL of the 20% alcohol solution contains the amount of "pure" alcohol is = 0.20×135 mL.

The 85% alcohol solution contains x mL of "pure" alcohol = 0.85× x mL.

The total amount of the "pure" alcohol is the sum

= 0.20×135 + 0.85× x mL.

It should be equal to the amount of the "pure" alcohol in the mixture, which is = 0.70× (x+135) ml.

So, your "pure alcohol" equation is,

= 0.85× x + 0.20×135 = 0.70× (x+135)

Simplify and solve it for x:

0.85x + 0.20×135 = 0.70x + 0.70×135,

0.85x - 0.70x = 0.70×135 - 0.20×135,

0.15x = 67.5

x = 67.5/0.15

= 450mL.

Learn more about the alcohol solution here,

brainly.com/question/12246176

#SPJ4

7 0

2 years ago

Evaluate ( a=2 b=3)...3a - 2b =

skad [1K]

Hey!

---------------------------------------------------

Steps To Solve:

~Substitute

3(2) - 2(3)

~Subtract

6 - 6

~Simplify

---------------------------------------------------

Answer:

$\Large\boxed{\mathsf{0}}$

---------------------------------------------------

Hope This Helped! Good Luck!

4 0

3 years ago

Read 2 more answers

Which statement describes characteristics of earthquakes occurring along divergent plate boundaries?

IgorC [24]

B
. They are large and occur at shallow depths near the where the plates diverge.

7 0

3 years ago

Why is a phenol more acidic than a regular alcohol? Group of answer choices

Aleks [24]

Answer:

a.Phenols have the ability to spread out the negative charge that forms.

Explanation:

This happens because of the aromatic ring the phenols have. When loosing the proton, the anion formed have different resonance isomers due to the double bonds in the aromatic ring. This resonance makes the anion more stable and prevents the reaction going backwards.

On the other hand, regular alcohol doesn't have resonace and the reaction of loosing the proton goes leftward and righward: is in equilibrium.

That equilibrium decreases the acidity of the alcohol.

3 0

3 years ago

To find the volume of a ring, the water displacement method was used.

ohaa [14]

Answer:

4 cm³?

Explanation:

68-64

4 0

3 years ago