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VLD [36.1K]
4 years ago
14

Identify the mixture of gasoline and motor oil and suggest a technique for separating their components. 1. homogeneous; decantin

g 2. heterogeneous; decanting 3. heterogeneous; distillation 4. homogeneous; distillation 5. homogeneous; dissolving followed by filtration and distillation
Chemistry
2 answers:
uranmaximum [27]4 years ago
7 0
Greese mixed liquid petroleum use in gasoline
alexgriva [62]4 years ago
4 0

Answer:

4. homogeneous; distillation

Explanation:

Gasoline and motor oil are chemically similar. They are both mixtures of non polar hydrocarbons containing carbon and hydrogen atoms. However, motor oil is much more viscous Motor Oil. Hence we can say that the mixture of gasoline and motor oil are homogeneous and they can be separated by distillation.

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Name the alcohol that contains five carbons and has a hydroxyl (alcohol) group on the second carbon.
Musya8 [376]
<span>Pentanol contains five carbons and has a hydroxyl group on the second carbon. (C5H11OH)</span>
8 0
4 years ago
A pharmacy intern is asked to prepare 3 L of a 30% w/v solution. T he pharmacy stocks the active ingredient in 8-ounce bottles o
MariettaO [177]

<u>Answer:</u> The number of bottles that will be needed are 6

<u>Explanation:</u>

We are given:

Amount of solution, the intern is asked to prepare = 3 L = 3000 mL   (Conversion factor:  1 L = 1000 mL)

Strength of solution needed = 30 % (w/v)

This means that in 100 mL of solution, the solute present is 30 grams

So, in 3000 mL of solution, the solute present will be = \frac{30}{100}\times 3000=900g

Active ingredient present in 1 bottle = 8 ounce of 70 % (w/v)

<u>Conversion factor used:</u> 1 ounce = 29.57 mL

So, 8ounce\times \frac{29.57mL}{1ounce}=236.6mL

Amount of active ingredient present in 1 bottle = 236.6\times \frac{70}{100}=165.6g

To calculate the number of bottles, we need to divide the total amount of solution needed by the amount of active ingredient present in 1 bottle, we get:

\text{Number of bottles}=\frac{\text{Amount of solution to prepare}}{\text{Amount of active ingredient in 1 bottle}}

Putting values in above equation, we get:

\text{Number of bottles}=\frac{900g}{165.6g}\\\\\text{Number of bottles}=5.43\approx 6

Hence, the number of bottles that will be needed are 6

6 0
3 years ago
What are the three key things in science?
stiv31 [10]

Answer:

The three key things in Science are:

Physical Science,Earth Science and Life Science

If the answer helps you PLEASE mark me as brainliest

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5 0
3 years ago
How many moles are in 2.6 x 10 ^25 atoms of Li?​
Cerrena [4.2K]

Answer:

43 mole

Explanation:

Given data:

Number of atoms of Li = 2.6× 10²⁵ atoms

Number of moles = ?

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.  The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

2.6× 10²⁵ atoms × 1 mole / 6.022 × 10²³ atoms

0.43 × 10² mole

43 mole

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3 years ago
20 Points!! 10 Each Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!
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Answer:

1.a 2.d 3.c 4.b

Explanation:

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3 years ago
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