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4 years ago

How much would it cost to drive from San Jose to Las Vegas (847 miles) is gasoline cost

Chemistry

1 answer:

kaheart [24]4 years ago

8 0

Answer:

$96.8

Explanation:

divide 847 by 28 because each gallon gets the car 28 miles and there's 847 miles in total and you get 30.25 and you multiple that by the cost so it be 30.25×3.20=$96.8

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Indicates the kind, number, arrangement, and bonds but not the unshared pairs of the atoms in a molecule.

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3 years ago

Define the chemical reaction?

Goshia [24]

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What is the difference between concentrated acid and a weak one?

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Difference between concentrated acid and weak acid :---

According to Arrhenius's theory the substances which easily get dissociated into H+ ions when dissolved in water are acids.

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3 years ago

Positive Deviation from Raoult's Law occurs when the vapour pressure of component is greater than what is expected in Raoult's L

8090 [49]

Answer:

All of the above.

Explanation:

In positive deviation from Raoult's Law occur when the vapour pressure of components is greater than what is expected value in Raoult's law.

When a solution is non ideal then it shows positive or negative deviation.

Let two solutions A and B to form non- ideal solutions.let the vapour pressure of component A is $P_A$ and vapour pressure of component B is $P_B$ .

$P^0_A$ = Vapour pressure of component A in pure form

$P^0_B$ = Vapour pressure of component B in pure form

$x_A$ =Mole fraction of component A

$x_B=$ =Mole fraction of component B

The interaction between A- B is less than the interaction A- A and B-B interaction.Therefore, the escaping tendency of liquid molecules in mixture is greater than the escaping tendency in pure form.Hence, the vapour pressure of a mixture is greater than the initial value of vapour pressure.

$P_A >P^0_A\cdot x_A$ , $P_B>P^0_B\cdot x_B$

Therefore, $P_A+P_B >P^0_A\cdot x_A+P^0_B \cdot x_B$

Therefore, the enthalpy of mixing is greater than zero and change in volume is greater than zero.

Hence, option a,b,c and d are true.

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4 years ago