Answer: the first option
Explanation:
Direction has nothing to do with the speed/ kinetic energy
Answer:
8
Explanation:
Methyl anion (CH₃⁻)
Valence electrons of carbon = 4
Valence electrons of hydrogen = 1
Charge = -1 which means addition of 1 electron
The total number of the valence electrons = 4 + 3(1) + 1 = 8
<u>In the Lewis structure of anion also, 1 lone pair and 3 bond pairs on the carbon atom which corresponds to 8 valence electrons.</u>
The correct matches for changes of state are:
- 1 or 3 : Arrow that shows particles getting closer together
- gas: State of matter that would fill any container
- liquid: State of matter with definite volume but NOT shape
- 2 or 4: Arrow that shows particles gaining energy
- solid: State of matter with definite shape
<h3>What is change of state?</h3>
Change of state is the process whereby matter in one physical state is converted to matter in another state by the addition or removal of heat.
The process of change of state are:
- Melting: solid to liquid due to addition of heat
- Vaporization: liquid to gas due to addition of heat
- Sublimation: solid to gas due to addition of heat
- Freezing: liquid to solid due to removal of heat
- Condensation: gas to liquid due to removal of heat
- Deposition: gas to solid due to removal of heat
Considering the given diagram, the correct matches are:
- 1 or 3 : Arrow that shows particles getting closer together
- gas: State of matter that would fill any container
- liquid: State of matter with definite volume but NOT shape
- 2 or 4: Arrow that shows particles gaining energy
- solid: State of matter with definite shape
In conclusion, change of state of matter occurs due to heat changes.
Learn more about change of state at: brainly.com/question/1078692
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Answer:
Explanation:
In order to a molecule or ion have <em>resonance </em>structures (named resonance contributors) it must have a π bond.
π bonds are in double or triple bonds. Single bonds are formed by sigma bonds.
Resonance structures are alternate representations for the same molecule or ion with different structures. Every structure will have the same number of electrons, but the electrons can move from one atom to another, which can only be done between π bonds; never between sigma bonds.
In the ion [NH₄]⁺ there are only sigma bonds: the N atom is at the centre of the iona, bonded to four H atoms; each N - H bond is a sigma bond. So, this structure does not exhibit any resonance.
On the other hand, [NO₃] ⁻ has a double bond between one of the oxygen atoms and the N atom at the centre. So, ion has a π bond, which indicates that there are resonance structures.
Answer:
The answer to your question is 330 g of CHO
Explanation:
Data
Calories needed = 2200 kcal/day
CHO = 60%
Proteins = 15%
Fats = 25%
Grams of carbohydrates needed = ?
Process
1.- Calculate the number of calories in 60% of 2200 kcal
2200 kcal ---------------- 100%
x --------------- 60%
x = (60 x 2200) / 100
x = 1320 kcal
2.- Calculate the grams of CHO
1 g of CHO ---------------- 4 kcal
x ---------------- 1320 kcal
x = (1320 x 1) / 4
x = 1320/4
x = 330 g of CHO