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3 years ago

Please help I soon as possible it’s really important

Chemistry

1 answer:

Vlada [557]3 years ago

8 0

Answer:

II. Rearrange the following jumbled words/phrases to make meaningful sentences: 5x1=5

a. certainly/the laughter/is/medicine/best

b. laughter/fact/is/in/a/panacea/for/diseases/all

c. lowers/pressure/by/circulation/it/blood/increasing/blood

d. a sense/and promotes/of/stress/well-being/laughter/decreases.

e. healthy food/ needed/is/better/also/lead/to/a/life

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krok68 [10]

Answer:

B! SPIRAL CAUSE ITS SPINNY AND PRETTY UWUUUUUU hehe :3

5 0

3 years ago

A reaction will be spontaneous only at low temperatures if both ΔH and ΔS are negative. For a reaction in which ΔH = −310.1 kJ/m

ruslelena [56]

Answer:

3211.12 K

Explanation:

The expression for the standard change in free energy is:

$\Delta G=\Delta H-T\times \Delta S$

Where,

$\Delta G$ is the change in the Gibbs free energy.

T is the absolute temperature. (T in kelvins)

$\Delta H$ is the enthalpy change of the reaction.

$\Delta S$ is the change in entropy.

For reaction to be spontaneous, $\Delta G$

Given, $\Delta H=-310.1\ kJ/mol=-310100\ J/mol$

$\Delta S=-89.00\ J/K.mol$

So,

$\Delta H-T\times \Delta S$

Thus, applying values as:-

$-310100-T\times (-89.00)$

So, T = 3484.27 K

The conversion of T( °C) to T(K) is shown below:

T( °C) = T(K) - 273.15

So,

T = (3484.27 - 273.15) K = 3211.12 K

The temperature below which the reaction is spontaneous is:- 3211.12 K

6 0

4 years ago

When aluminum (Al) reacts with chlorine gas (Cl2), aluminum chloride (AlCl3) is produced according to the balanced equation belo

andreyandreev [35.5K]

The balanced reaction shows for every 2 Aluminum we need 3 Chloride gas.

20 Al * (3 Cl / 2 Al) = 30 Cl
We have 45 Cl ... Which is more than enough for 20 Al
We have excess Cl
Then the limiting reagent = Al

5 0

3 years ago

Read 2 more answers

I need help!!!! Plz help me with the above question

maksim [4K]

The answer will be bar graph

4 0

4 years ago

Dehydration is a reversible process. Which of the two set-ups, distillation or

Nata [24]

Answer:

Distillation will generate the most cyclohexene.

Explanation:

Let us assume following attached reaction for the synthesis of cyclohexene from cyclohexanol which attains equilibrium after certain time.

As shown in figure the cyclohexanol upon treatment with phosphoric acid undergoes dehydration reaction (removal of water) and produces cyclohexene. On the other hand cyclohexene reacts with water (hydration reaction) and produces cyclohexanol.

Now, if this reaction is allowed in a single flask it will attain equilibrium and will not generate the cyclohexene in high quantity. On the other hand if we apply Le Chatelier's principle ( removal of product moves the equilibrium in right direction) and distillate cyclohexene (boiling the cyclohexene to convert it into vapors and then collect it after condensation) will move the reaction in forward direction and will allow us to generate cyclohexene in high amounts.

7 0

3 years ago