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blsea [12.9K]
3 years ago
14

Need help with chemistry hw please help

Chemistry
2 answers:
Andru [333]3 years ago
5 0
Co2 = two covalent bonds
ccl4 = 4 covalent bonds
Lih = covalent bond
Tju [1.3M]3 years ago
5 0
FOR THE TABLE:
Mg has an atomic number of 12. This means it has 12 protons and starts with 12electrons before bonding. It may be helpful to draw these ones out at first until you get the hang of it. If Magnesium has 12 electrons then it will have 3 shells of electrons before it bonds. 2 electrons in the first shell. and 8 in the second shell.When it bonds with Cl₂ it will lose the outer most shell of electrons. now it has only 2+8 electrons because Cl₂ stole the other two electrons to satisfy their octet. Therefore, Mg will have the configuration of the noble gas that has an atomic number of 10 and each Cl atom will have the noble gas configuration of the noble gas with 18 as their atomic number because each chlorine stole one electron.


For CO₂ I knew it was Polar covalently bonded because Carbon has an electronegativity value of 2.5 and Oxygen has and electron negativity value of 3.5. In order to be a POLAR covalent bond the difference in electronegativity between atoms must between 0.4 and 1.8. 3.5-2.5= 1 . Because 1 is between 0.4 and 1.8 these C-O bonds are polar covalent. 

LiH was a tricky one because the electronegativity difference wasn't that high, but apparently it is still considered an ionic bond. H steals one of Li's 3 e- so that they both have 2 electrons and look like Helium.

Hope my pictures help a little. This was a tough homework so please ask if you are still confused about something and I'll try my best  to clarify.

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LUCKY_DIMON [66]

sorry but I don't know so sorry

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2 years ago
Which organism is the carnivore in this food web?
mihalych1998 [28]
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3 years ago
When you have finished adding the necessary amount of NaOH to your beaker, what color will the litmus paper turn?
Svetllana [295]

<u>Answer:</u> The red litmus paper turns blue on dipping in NaOH solution.

<u>Explanation:</u>

Litmus paper is the indicator that detects the nature of the solution, whether it is acidic or basic.

There are 2 types of litmus paper:

  • <u>Red litmus paper:</u> This paper will turn blue if it is dipped in basic solution and will remain as such if it is dipped in acidic solution.
  • <u>Blue litmus paper:</u> This paper will turn red if it is dipped in acidic solution and will remain as such if it is dipped in basic solution.

NaOH is a strong base, so when a red litmus paper is dipped in the beaker having necessary amount of NaOH, the red litmus paper turns into blue.

7 0
3 years ago
Metals give up electrons to become cation or anion
galina1969 [7]
Metals usually become cations since electrons are negatively charged and when they are lost there are more protons than electrons making a positive net charge in the atom.  (cations are positively charged ions while anions are negatively charged ions)

I hope this helps.  Let me know if anything is unclear.
8 0
3 years ago
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Answer:

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Explanation:

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