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3 years ago

Look at the following enthalpy diagram. Select all that apply.

Chemistry

1 answer:

Drupady [299]3 years ago

5 0

Answer:

Option 2 and 4 are correct

Explanation:

The reactants in the attached image have more enthalpy and hence less stability as they are more reactive. Thus, Product is more stable than the reactants.

This is an addition reaction in which two reactants add up to form the product.

Very less activation energy is required as the reactants themselves are unstable, possess high energy and hence are very reactive.

Reactants have more energy than the products.

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kenny6666 [7]

Answer: The value of $K_p$ is 324

Explanation:

We are given:

Initial pressure of $S_8(g)$ = 1.00 atm

The chemical equation for the conversion of $S_8(g)$ to $S_2(g)$ follows:

$S_8(g)\rightleftharpoons 4S_2(g)$

Initial: 1

At eqllm: 1-x 4x

We are given:

Equilibrium partial pressure of $S_8(g)=0.25atm$

Evaluating the value of 'x', we get:

$\Rightarrow (1-x)=0.25\\\\\Rightarrow x=1-0.25=0.75$

The expression of $K_p$ for the above reaction follows:

$K_p=\frac{(p_{S_2})^4}{p_{S_8}}$

$p_{S_2}=4x=(4\times 0.75)=3atm$

$p_{S_8}=0.25atm$

Putting values in above expression, we get:

$K_p=\frac{3^4}{0.25}\\\\K_p=324$

Hence, the value of $K_p$ is 324

5 0

3 years ago

The total number of electrons in the outer shell of a sodium atom is? A. 1 B.2 C.8 D.18

mrs_skeptik [129]

Answer:

Explanation:

outershell atoms of an element are also known as valency of that element

so the valency and number of elctron in the outershell of a sodium atom is +1.

hope this will help

mark me as brilliant

7 0

3 years ago

Which of the following statements does NOT describe the anomeric carbon? A. This carbon is attached to two oxygens. B. This carb

MaRussiya [10]

Answer:

The answer is E. All of the statements describe the anomeric carbon.

Explanation:

When a sugar switches from its open form to its ring form, the carbon from the carbonyl (aldehyde if it is an aldose, or a ketone in the case of a ketose) suffers a nucleophilic addition by one of the hydroxyls in the chain, preferably one that will form a 5 or 6 membered ring after the reaction.

As such, the anomeric carbon will have two oxygens attached (The original one and the one that bonded when the ring closed).

It will be chiral, given that it has 4 different groups attached. (-OR,-OH,-H and -R, where R is the carbon chain).

The hydroxyl group can be in any position (Above of below the ring), depending on with side the addition took place. (See attachment)

It is the carbon of the carbonyl in the open-chain form of the sugar, because it is the only one that can react with the Hydroxyls.

8 0

3 years ago

Calculate the force applied to a car with mass of 1200 kg that has an acceleration of 2 m/s/s.

bearhunter [10]

Answer:

2,400

Explanation:

F = m × a

F = 1200 × 2

F = 2,400

6 0

3 years ago

When the heat of reaction (H=ve), the reaction is Endothermic reaction True False

juin [17]

False because that doesn’t make sense

6 0

3 years ago

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