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3 years ago

Draw the Lewis Structure for Calcium, Oxygen, and Lead.

Chemistry

1 answer:

klio [65]3 years ago

7 0

You need to find the amount of valence electrons that the element has in order to do a Lewis structure.

For example since Calcium has 2 valence electrons, i put two dots around the element symbol. You also can’t have more than 2 dots on 1 one of the element. Each element has 4 sides like a box.

Here are some great videos that explain it in further detail.

https://youtu.be/Sk7W2VgbhOg

https://youtu.be/Z6Hx_BAZeUw

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What is one factor that must be considered when choosing a pesticide to apply?

sasho [114]

Answer:

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Explanation:

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3 years ago

An object exerts force of 500 n and sits on an area of 4.5m X 1.5m. Calculate the amount of pressure exerted by the object in to

vlabodo [156]

4.5 times 1.5

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3 years ago

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3 years ago

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4 years ago

Read 2 more answers

Predict which of the following changes will cause the volume of the balloon to increase or decrease assuming that the temperatur

IrinaVladis [17]

Answer:

1. a

2. a

3. b

4. c

Explanation:

The STP is the Standard conditions of Temperature and Pressure, in these conditions, T = 0°C and P = 1 atm. By the ideal gas law,

PV = nRT

Where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.

We can observe that pressure and volume are indirect proportional, so when one increase, the other decrease. so:

1. The pressure decreases from 1.15 atm to STP, 1 atm, thus the volume increases.

2. The pressure decreases from STP, 1 atm, to 0.5 atm, thus the volume increases.

3. The pressure increases from STP, 1 atm, to 1.25 atm, thus the volume decreases.

4. The pressure remains constant at 1 atm, thus the volume is unchanged.

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3 years ago