CH3OH + O2 = CH2O + H2O
If you add number 2 before some of these elements, they will be balanced. So:
<u>2CH3OH + O2 = 2CH2O + 2H2O
</u>
On the left, there are 2 atoms of C, 4 atoms of O (2O + O2), and 8 atoms of H (2 * H3 + 2H = 8H), and on the left, the same number of atoms is present.
Given:
Atomic number of an atom = 14
Partial electron configuration = 1s²2s²2p⁶3s²X
To determine:
The identity of X
Explanation:
Based on the Aufbau rule, the order in which the orbitals fill up based on energetic considerations is:
1s 2s 2p 3s 3p 4s 3d 4p ....
maximum # electrons in s orbital = 2, p = 6, d = 10 and so on
Since 3p would follow the 3s orbital, in this case we will have the full configuration as:
1s²2s²2p⁶3s²3p²
Ans c) X = 3p²
The Percent error in the calculation of densities of the metal during experiment is 0.03 %
<h3>What is Percentage error?</h3>
Percent error is the difference between estimated value and the actual value in comparison to the actual value and is expressed as a percentage.
Percent error = [Experimental value - Theoretical value] / Theoretical value x 100%
Percent error = 7.83 -7.86 / 7.86 x 100
= 0.03 %
Learn more about percentage error here ;
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Answer: Option (b) is the correct answer.
Explanation:
In solids, atoms are held together because of strong intermolecular forces of attraction between them.
As a result, solids have a definite shape and volume. Hence, its molecules are not able to slide past each other.
Whereas in liquids, molecules are together by less strong forces as compared to solids. Therefore, liquids do not have fixed shape and volume. They occupy the shape of a container in which they are kept together.
Therefore, molecules of a liquid are able to slide past each other.
In gases, molecules are held by weak Vander waal forces. So, they collide rapidly and occupy the volume of container and not the shape. Similarly, plasma is a hot ionized gas which consists of positive ions and negative electrons. Like gases, plasma also occupies the volume of a container.
Thus, we can conclude that liquid is the matter which can fill a container from top to bottom.
Answer: -
Oxygen, a group 16 element with an electron configuration of 1s22s22p4, will form a __Negative___ ion in a chemical bond
Explanation: -
Oxygen has the electronic configuration of 1s2 2s2 2p4.
Number if valence electrons of oxygen = 2 + 4 = 6
Oxygen just needs 2 more electrons to have 8 electrons in it's valence shell and become stable as per Octet rule.
Thus oxygen will accept 2 electrons during formation of a chemical bond.
Due to this it will have negative charge and form a negative ion or anion in a chemical bond.