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777dan777 [17]
3 years ago
14

Explain the periodic trend for ionization energy and why this occurs?

Chemistry
1 answer:
Dahasolnce [82]3 years ago
4 0

Answer:

Ionization energy tends to increase across a period because the nuclear pull is increasing while shielding is not changing because electrons are in the same energy level. Not only that as we move across a period elements are closer to a full octet.

Explanation:

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How many significant digits are in 5.100 x 103?
photoshop1234 [79]
5100.0 has 5 but a 5.100 x 10 cubed(3) has only 4
4 0
4 years ago
If 6 moles of a compound produce 84 J of energy, what is the a<br> Hreaction in J/mol?
Vikki [24]

Answer:

14 J of heat

Explanation:

Recall that the enthalpy of reaction is defined as the enthalpy change that occurs in a system when matter is transformed by a given chemical reaction, if all reactants and products are in their standard states. Here we have the heat of formation of six moles of the substance and we are expected to use it to obtain the the heat of formation of one mole of the compound and we can do that by simple proportion as shown below;

If 6 moles of the compound produces 84J of heat

1 mole of the substance will produce 1×84/6 = 14 J of heat

6 0
4 years ago
According to Whittaker’s system of classification, which of the following is not a kingdom?
Mariana [72]

Answer:

Monera

Explanation:

According to Whittaker's system of classification bacteria is not as kingdom so bacteria represent or belongs to Monera that's why Monera is not kingdom

8 0
3 years ago
Compare the shape of a chemical signalling molecule and a receptor.
Andru [333]

Cell signalling is a process by which cells communicate with each other and transfer messages.

<h3>What is a receptor?</h3>

A molecule inside or on the surface of a cell binds to a specific substance and causes a specific effect in the cell.

Cell signalling is a process by which cells communicate with each other and transfer messages. When a signal molecule binds to a receptor protein, changes occur in the receptor proteins. Two changes are listed below:

1. The receptor protein undergoes conformational changes and acts as an enzyme.

2. The receptor protein that makes a second messenger molecule that leads the reaction further to other cells or molecules.

Learn more about the receptor here:

brainly.com/question/6438216

#SPJ1

6 0
2 years ago
Please help due soon.
Vikentia [17]

Answer:

water - Yes because the do drink water

Air - yes they need to breath or alse they would not do good

warmth - yes or they die from coldness

Light - yes to get there food

soil - yes nution for there roots

Explanation:

Hopes it helps

3 0
3 years ago
Read 2 more answers
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