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ale4655 [162]
3 years ago
11

Explain why the nucleus of an atom is positively charged but the overall charge of an atom is neutral

Chemistry
1 answer:
gtnhenbr [62]3 years ago
8 0

Answer:

The nucleus is positively charged because it contains all of the protons however the charge of an atom is neutral because there is an equal amount of protons (positive) and electrons (negative) meaning the opposite charges cancel each other out therefore making the atoms overall charge neutral.

Explanation:

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This unit discusses in detail the role of catalysts to lower the activation energy of reactions. The term catalyst appears in no
Naddik [55]
Catalyst has found usage in non-scientific terms as an almost metaphorical word for something provokes or speeds up action or change. The word's applicability to many topics made it easy for it to find its way out of the scientific lexicon and into other domains, in this case political. 

Its meaning is roughly the same, in that a catalyst in this context is something that facilitated or sped up the process of glasnost.

One distinct meaning that I notice is that "catalyst" in more casual or non-scientific speech is that it is often used as a creator of action all its own, an actor in itself, rather than a facilitating agent to a reaction, as its scientific definition states. 
7 0
3 years ago
Explain what is meant by energy and list two units in which energy is measured
dybincka [34]

Answer:

J (joule)  W(watt)

Explanation:

If you're looking for the definition it is

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4 0
3 years ago
What are the products in the following chemical reaction?
hodyreva [135]

The products are on the right side of the chemical equation, while the reactants are on the left side of the chemical equation.

Therefore if we have:

methane + oxygen → carbon dioxide + water

Then the reactants are methane + oxygen

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4 0
3 years ago
Which correctly summarizes the trend in electron affinity?
ra1l [238]

The answer is it tends to be more negative down a group. This is because as you go down the periodic table, the elements have more electron shells in their atoms. This makes the outermost shells less attracted to the nucleus due to their greater distances from the nucleus. Therefore, these shells are less likely to attract electrons (hence lower electron affinity) and are even more likely to lose electrons from their outer electron orbits.

4 0
4 years ago
Read 2 more answers
A 1.10 M HCl solution prepared from 190.0 mL of a 7.0 M HCl
IrinaK [193]

Answer:

1,209mL or 1.209L

Explanation:

For this equation you would use M1V1=M2V2

You would plug (1.10M)( XmL)=(7.0M)(190.0mL)

Then you would solve for X

XmL= \frac{(7.0M)(190.0mL)}{1.10M}

XmL- 1,209mL

8 0
4 years ago
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