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Luba_88 [7]
3 years ago
7

Please someone help me ASAP! I literally posted this question many times and no one is answering! also, PLEASE DO NOT GIVE ME A

RANDOM GIBBERISH ANSWER OR ELSE I WILL REPORT YOU AND GIVE YOU A LOW RATING!!!
If you're unsure of the answer just type it in the comments.

QUESTION:
For the reactivity category, fill in the boxes to indicate how
reactive Helium is . The more filled boxes, the more
reactive Helium is. If helium has 6 valence electrons, how reactive is it?

Also, if all the boxes are filled then helium is very reactive, if not many boxes are filled then its not really reactive.

Just tell me how many boxes I should fill for how reactive the element Helium is!!
Here is the picture:

Chemistry
1 answer:
blondinia [14]3 years ago
8 0
The electron bit would be 2 and you could colour in 4 boxes:) I had the same question as this and I got it correct
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the reaction between nitrogen and hydrogen to produce ammonia is described by the following equilibrium reaction. 3h2 n2↽−−⇀2nh3
eimsori [14]

N₂, H₂, NH₃ are present in the reaction mixture when equilibrium has been obtained.

Balanced chemical reaction: 3H₂ + N₂ ⇄ 2NH₃

Hydrogen (H₂ ) and nitrogen (N₂) are reactants.

Ammonia (NH₃) is product of the reaction.

Reaction goes in both direction, both reactants and product are present.

The amount of substance of reactants and products of reaction do not change when chemical reaction is in chemical equilibrium.

In a chemical reaction, chemical equilibrium is the state in which both reactants and products are present in concentrations which not change with time.

Speed of direct and irreversible chemical reaction are equal.

More about equilibrium: brainly.com/question/25651917

#SPJ4

4 0
2 years ago
The word weather is most commonly used to refer to the state of the atmosphere at a certain time. Why do you think the same word
s344n2d4d5 [400]
<span> weather is the condition of the climate in a particular place at a particular
time.</span>
3 0
3 years ago
Copper can have improved wear resistance if alloyed with ceramic alumina, Al2O3. If a copper alloy has 7.7 wt % Al2O3, what is i
vitfil [10]

The composition in mol% of the elements are :

  • 4.91%  of Al₂O₃ in alloy  
  • 95.08% of Cu in alloy

<u>Given data : </u>

Weight percentage of copper alloy = 7.7 wt %

Assume weight of alloy = 100 grams

<h3>Applying the weight percentage </h3>

mass of Al₂O₃ in alloy = 7.7 gm

Mass of Cu in alloy = 100 - 7.7 = 92.3 gm

<u />

<u>First step : calculate the mole of elements</u>

i) moles of Al₂O₃ in alloy

 = mass of Al₂O₃  in alloy /  Atomic mass of Al₂O₃

 = 7.7 gm  / 102 gm/mol

 = 0.075 mol

ii) moles of Cu in alloy

 = mass of Cu in alloy / Atomic mass of Cu

 = 92.3 gm / 63.5 gm/mol

 = 1.45 mol

Therefore the total number of moles in the alloy = 0.075 + 1.45 = 1.525

<u>Next step : Determine the mole </u><u>percentages </u>

i) Mole percentage of Al₂O₃ in alloy  

= ( 0.075 ) / 1.525  * 100

= 4.91%

ii) Mole percentage of Cu in alloy

= ( 1.45 ) / 1.525 * 100

= 95.08%

<u />

Hence we can conclude that The composition in mol% of the elements are : 4.91%  of Al₂O₃ in alloy and  95.08% of Cu in alloy.

Learn more about alloys : brainly.com/question/716507

4 0
3 years ago
What element has the highest melting point?
Valentin [98]
Tungsten has the highest melting point (6192°F) of all metals in their pure form.
7 0
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How many seconds elapsed in 2.0 hours
maxonik [38]
60 seconds times 60 minutes is 3,600 seconds, or one hour. 3,600 times 2 is 7,200 seconds.
8 0
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