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Tresset [83]
2 years ago
11

Help, please I will mark the brainliest answer if right!

Chemistry
1 answer:
gavmur [86]2 years ago
6 0

here's your answer dear friend❤❤

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What is the lewis structure and formal charge of CH2O
aksik [14]

Diagram A shows the Lewis structure (LS) of CH_2O. The formal charge on each atom is zero.

To get the formal charge (FC) on the atoms, cut each bond in half, as in <em>Diagram B</em>.  Each atom gets the electrons on its side of the cut.

Formal charge = valence electrons in isolated atom - electrons on bonded atom

FC = VE - BE  

<em>On O: </em>

VE = 6

BE = 2 lone pairs 2 + 2 bonding electrons = 4 + 2 = 6

FC = 6 – 6 = 0.

<em>On H: </em>

VE = 1

BE = 1 bonding electron

FC = 1 – 1 = 0

<em>On C: </em>

VE = 4

BE = 1 in each single bond + 2 in the double bond = 2 + 2 = 4

FC = 4 - 4 = 0

3 0
3 years ago
The energy absorbed or released when an electron is added to a gaseous atom is know as
PIT_PIT [208]
Exothermic reaction hope I helpef
6 0
3 years ago
Read 2 more answers
How is the melting point of a substance recorded
GrogVix [38]

1. slowly heat stubstance.

2. once the substance is at the most liqued state take the temp. that's the melting point of that subtance.

hope that helps, any other questions feel free to DM me dont wate your points. :)

6 0
3 years ago
Help. The answer to question 1 I didn't mean to click so please answer that as well.
Zepler [3.9K]
We have that energy=specific heat * change in temperature * mass. Thus, we have the final temperature (22) minus the initial temperature (55) to equal -33 as our change in temperature. Our specific heat is in J/g*C, so we're good with that because g stands for grams and the aluminium is measured in grams. As there are 10 grams of aluminum, we have
10*(-33)*0.902=-298 ish as our final temperature

An exothermic reaction would release energy and would therefore lose heat itself, while an endothermic reaction would absorb energy and gain heat. Therefore, losing heat would be an exothermic reaction

Feel free to ask further questions!
4 0
3 years ago
The most unusual characteristic of Uranus is _____.
fiasKO [112]

Answer:

the axis is tilted at 98 degrees

Explanation:

Uranus is blue, not green; it has an atmosphere of hydrogen and helium, not methane.  While it does have an icy cold temperature, that's not a very unusual characteristic for an outer planet.  However, the tilt of the axis is unusual; no other planet is tilted almost completely on its side!

6 0
3 years ago
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