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Tema [17]
3 years ago
9

Help Please! Thanks!

Chemistry
2 answers:
Burka [1]3 years ago
6 0
D would be correct! during a lunar eclipse the moon is in the earth’s shadow, meaning the earth is directly in between the moon and sun!
soldier1979 [14.2K]3 years ago
4 0

Answer:

a

Explanation:

it would be the most reasonable

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[80 POINTS] Which reaction will most likely take place based on the activity series?
KIM [24]

Answer:

Li + ZnCO3

Explanation:

Li is higher than Zn on the activity series so Ln is more easily oxidized and prefers to be in a compound. For the rest of the reactions, the element that is higher on the activity series is already in the compound, so the reactions wouldn't happen.

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Which part of the immune system can be "trained" using vaccines?
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Except for helium, all the elements in the last column of the periodic table have
lorasvet [3.4K]

Answer:

O

Explanation:

they have O valence electrons

4 0
4 years ago
What is reacitivty series, and how you can access reactivity of metals...
lubasha [3.4K]

In Chemistry, a reactivity series of metals , also known as the activity series refers to the arrangement of metals in the descending order based upon their reactivity .

<u>Salient Features</u> :-

  • The metal at the top of the reactivity series are powerful reducing agents since they are easily oxidized.
  • The reducing ability of metals grows weaker while traversing down the series.
  • The electro-positivity of metals also reduces while moving down the reactivity series.
  • Metals that are placed higher on the reactivity series have the ability to displace metals that are placed lower in the series.

<u>The metal reactivity series is given below</u> :-

To access the reactivity of metal , from the given reactivity series identify any of the metal and locate the reactivity based upon the choice of reactivity. The metal at the top (Potassium) is most reactive and the metal at the bottom (Platinum) is the least reactive.

To learn more about metal reactivity series visit -

brainly.com/question/16072297

8 0
2 years ago
If 14 moles of oxygen react with 14 moles of hydrogen to produce water, what is the
Leokris [45]
Hydrogen is the limiting reactant because when doing a stoichiometry equation for the reactants, hydrogen will be used completely by having a smaller yield and oxygen will be excess (7 moles to be exact)

7 0
3 years ago
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