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3 years ago

Draw Lewis structures for each of the following moecules. Show resonance structures, if they exist

1 answer:

6 0

A Lewis structure is a visual representation of the bonds between atoms and it shows the lone pairs of electrons in molecules. This structure is also referred as Lewis dot diagram. Resonance structure are multiple Lewis structure that describe a single molecule.

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Two students were in Chemistry Class completing an assigned lab experiment. The two students were to mix 5.34g CaCl2 with CuSO4

skelet666 [1.2K]

Answer:

CaCl₂ + CuSO₄ → CaSO₄ + CuCl₂.

Explanation:

It is a replacement reaction, that cations and anions are replaced with each other.

So, it gives CaSO₄ and CuCl₂.

To balance the reaction, we apply the law of conversation of mass, that the no. of atoms in the reactants side is equal to that in the products side.

So, the balanced reaction is:

CaCl₂ + CuSO₄ → CaSO₄ + CuCl₂.

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3 years ago

Which statement a-d about a state function is not correct?

Novosadov [1.4K]

D-examples of state functions only occur in chemistry and physics and not in real life.

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3 years ago

The structure of the Earth is divided into four major components: the crust, the mantle, the outer core, and the inner core.

SSSSS [86.1K]

It is true, they are the 4 main layers.

3 0

3 years ago

At a given temperature, 3.12 atm of H2 and 5.52 atm of I2 are mixed and allowed to come to equilibrium. The equilibrium pressure

expeople1 [14]

Answer: 0.596

Explanation:

For this problem, we want to find $K_{p}$ . To do so, we will need to use the ICE chart. The I in ICE is initial quantity. In this case, it is the initial pressure. Pressure is in atm. The C in ICE is change in each quantity. The E is equilibrium.

H₂(g) + I₂(g) ⇄ 2HI(g)

I 3.12 5.52 0

C -0.869 -0.869 +1.738

E 2.251 2.251 1.738

For the steps below, refer to the ICE chart above.

1. Since we were given the initial of H₂, I₂ and equilibrium of 2HI, we can fill those into the chart.

2. Since we were not given the initial for 2HI, we will put 0 in their place.

3. For the change, we need to add pressure to the products to make the reaction reach equilibrium. We would add on the products and subtract from the reactants to equalize the reaction. Since we don't know how much the change in, we can use variable x. We know that the equilibrium of 2HI is 1.738, we know the change is 0.869 because 1.738/2=0.869. Since there are 2 moles of HI, we must divide the equilibrium by 2 to find x, so that we can fill that into the reactants side.

4. With the equilibrium values, we can find the equilibrium pressure. It is products over reactants. We use the values of E.

$K_{p} =\frac{[HI]^2}{[H_{2}][I_{2} ] }$

The [HI]² comes from 2HI. We more the moles to the exponent when we are calculating the equilibrium pressure.

$K_{p} =\frac{(1.738)^2}{(2.251)(2.251)} =0.596$

We typically don't put units because K is unitless, but know that the units is atm throughout the entire problem.

5 0

3 years ago

What is the differences between amorphous solid and crystalline solid

sp2606 [1]

Answer:

Crystalline solids have well-defined edges and faces, diffract x-rays, and tend to have sharp melting points.

In contrast, amorphous solids have irregular or curved surfaces, do not give well-resolved x-ray diffraction patterns, and melt over a wide range of temperatures.

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3 years ago