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3 years ago

What is the relation of a liquid with its depth and density

Chemistry

1 answer:

neonofarm [45]3 years ago

8 0

Answer:

hope this will benefit for you thank you for the question

Explanation:

With liquids, density is almost independent of depth as liquids are almost incompressible. With gases, such as the atmosphere, density increases with depth due to gravity. The atmosphere can be considered an "ocean" of air. We live at or near the bottom so we experience significant air density. This decreases with altitude.

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Watered down koolaid is an example of

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The answer is A . Saturated solution

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3 years ago

Which ranks the solutions from the strongest to weakest acid?

Norma-Jean [14]

Answer:

the answer is the last option yzxw

Explanation:

ph is stronger the lower

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3 years ago

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Salicylic acid (C7H6O3) reacts with acetic anhydride (C4H6O3) to form acetylsalicylic acid (C9H8O4).

zavuch27 [327]

Answer : The correct option is, (B) Salicylic acid

Solution :

First we have to calculate the moles of salicylic acid and acetic anhydride.

$\text{Moles of }C_7H_6O_3=\frac{\text{Mass of }C_7H_6O_3}{\text{Molar mass of }C_7H_6O_3}=\frac{70g}{138.121g/mole}=0.507moles$

$\text{Moles of }C_4H_6O_3=\frac{\text{Mass of }C_4H_6O_3}{\text{Molar mass of }C_4H_6O_3}=\frac{80g}{102.09g/mole}=0.783moles$

Now we have to calculate the limiting and excess reagent.

The balanced chemical reaction is,

$2C_7H_6O_3(aq)+C_4H_6O_3(aq)\rightarrow 2C_9H_8O_4(aq)+H_2O(l)$

From the balanced reaction we conclude that

As, 2 moles of salicylic acid react with 1 mole of acetic anhydride

So, 0.507 moles of salicylic acid react with $\frac{0.507}{2}=0.2535$ mole of acetic anhydride

The excess of acetic anhydride = 0.783 - 0.2535 = 0.5295 moles

That means the in the given balanced reaction, salicylic acid is a limiting reagent because it limits the formation of products and acetic anhydride is an excess reagent.

Hence, the limiting reagent is, salicylic acid.

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3 years ago

WILL GIVE 100 POINTS PLEASE HELP EMERGENCY NEED CORRECT ANSWERS

zubka84 [21]

Answer:

6. 13.8 moles

7. 0.751 moles

8. 2.04 moles

9. 0.00794 moles

10. 0.158 moles

Explanation:

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3 years ago

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Cortisol (molecular weight 362.47 g/mole), one of the major steroid hormones, is a key factor in the synthesis of protein. Its p

frez [133]

The molecular formula of cortisol is C₂₁H₃₀O₅

Explanation:

To find the cortisol formula we use the following algorithm:

divide each element percentage by the atomic weight of the element

for carbon 69.9 / 12 = 5.83

for hydrogen 8.34 / 1 = 8.34

for oxygen 22.2 / 16 = 1.41

now the we divide the obtained numbers by the lowest one, which is 1.41

for carbon 5.83/ 1.41 ≈ 4

for hydrogen 8.34 / 1.41 ≈ 6

for oxygen 1.41 / 1.41 = 1

the empirical formula of cortisol is C₄H₆O

the molecular formula of cortisol is (C₄H₆O)ₓ

70x = 362.47

x = 362.47 / 70

x ≈ 5.2

carbon ≈ 5.2 × 4 ≈ 21

hydrogen = 5 × 6 = 30

oxygen = 5 × 1 = 5

The molecular formula of cortisol is C₂₁H₃₀O₅

Learn more about:

determining the molecular formula of a compound

brainly.com/question/13764849

#learnwithBrainly

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4 years ago