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HACTEHA [7]
2 years ago
8

Synthesis Decompisition O Combustion O Single Displacement O Double Displacement

Chemistry
1 answer:
BabaBlast [244]2 years ago
4 0

Answer:

Synthesis

Explanation:

Nothing else works

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Given 2Na + Cl2=2NaCl, what is the excess reactant? What is the limiting reactant?
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Answer: The limiting reactant is Na

Explanation:

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2 years ago
A superconductor performs best at??
Charra [1.4K]

very cold temperatures

Explanation:

A superconductor performs best at very cold temperatures.

A superconductor is a perfect conductor that is able to allow the passage of electricity and heat without resistance.

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4 0
3 years ago
Are those correct if not tell me which are wrong I need help with number 21 also
adelina 88 [10]
For 23., you have to find a way to measure your heart rate not increase it. search it up on google.

3 0
3 years ago
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For which of the following elements would the most common ion be expected to have a larger radius than that of its corresponding
Andre45 [30]

<u>Answer:</u> The ion that is expected to have a larger radius than the corresponding atom is chlorine.

<u>Explanation:</u>

There are two types of ions:

  • <u>Cations:</u> They are formed when an atom looses its valence electrons. They are positive ions.
  • <u>Anions:</u> They are formed when an atom gain electrons in its outermost shell. They are negative ions.

For positive ions, the removal of electron increases the nuclear charge for an outermost electron because the outermost electrons are more strongly attracted by the nucleus. So, the effective nuclear charge increases for cations and thus, the size of the cation will be smaller than that of the corresponding atom.

For negative ions, the addition of electron decreases the nuclear charge for an outermost electron because the outermost electrons are less strongly attracted by the nucleus. So, the effective nuclear charge decreases for anions and thus, the size of the anion will be larger than that of the corresponding atom.

For the given options:

<u>Option a:</u> Chlorine

Chlorine gains 1 electron and form Cl^- ion

<u>Option b:</u> Sodium

Sodium looses 1 electron and form Na^+ ion

<u>Option c:</u> Copper

Copper looses 2 electrons and form Cu^{2+} ion

<u>Option d:</u> Strontium

Strontium looses 2 electrons and form Sr^{2+} ion

Hence, the ion that is expected to have a larger radius than the corresponding atom is chlorine.

8 0
3 years ago
How many moles in .5g of sodium bromide?
Genrish500 [490]
I'm not sure how many sign fig's you are required to have.
However I think the final answer would be 0.05 Moles, because of the .5g, that is considered 1 sign fig.

6 0
3 years ago
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