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MariettaO [177]
3 years ago
8

SOMEONE PLEASE HURRY AND HELP ME!!! WILL GIVE 100 pts!!!!!!

Chemistry
2 answers:
GuDViN [60]3 years ago
8 0

Answer:

image isn't loading for me :((( can you try replying to me w the question

kirza4 [7]3 years ago
5 0
B

Have to make the letter requirement lol
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What is the purpose of element tiles in the periodontic table?
son4ous [18]
It orders the chemical elements in a useful way.
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4 years ago
Consider the following reaction at equilibrium: 2CO2 (g) ↔ 2CO (g) + O2 (g) ∆H° = -514 kJ Le Châtelier's principle predicts that
Elza [17]
<h3><u>Answer;</u></h3>

increase the partial pressure of CO2

<h3><u>Explanation;</u></h3>

2CO(g) + O2(g) -------> 2CO2(g) + heat

  • Removel of Oxygen makes the equilibrium to move towards the left side (reactants) because the reactants concentration is decreasing. According to the LeChâtelier’s principle equilibrium moves towards the lower concentration.
  • When the partial pressure of any of the gaseous reactants or of the products is increased, the position of equilibrium is shifted so as to decrease its partial pressure. In this case, the removal of oxygen causes a shift to to the left which causes an increase in the partial pressure of CO2.
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3 years ago
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Which element provides strength to bones?<br><br> sulfur<br> phosphorus<br> nitrogen<br> hydrogen
Vlad1618 [11]

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3 0
3 years ago
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how many moles of hydrogen are evolved when an excess of sodium metal is added to one mole of citric acid?
vova2212 [387]
The formula of citric acid is:

           CO2H
           |
HO -  C - CH2CO2H
          
|
          C - CH2 CO2H



I bolded the 4 hydrogens that can be subsituted by sodium.


Three of those hydrogens belong to carboxyl group (- CO2H) and one to a hydroxyl group (- OH).


You need to take into account that 4 H will form 2 H2 molecules.


So, the answer is that 2 moles of molecules will be formed from 1 mole of citric acid molecules.


   

4 0
3 years ago
True
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Answer:

The question 7 answer is false

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