Answer:
Explanation:
Fe2+ Has 4 unpaired electrons.
By method of elimination;
Option A: Ni2+ has two unpaired electrons. so this option is wrong.
Option B: There are 5 unpaired electrons in the Fe3+ ion. so this option is wrong.
Option C: There are 4 unpaired electrons in the Cr2+ ion. so this option is correct.
Option D: There are 5 unpaired electrons in the Mn2+ ion. so this option is wrong.
Option E: There are 3 unpaired electrons in the Co2+ ion. so this option is wrong.
The thermal energy (heat) must go down, because for an example of deposition (DEPOSITion) with a cold soda if you leave it out it gets condensation, which is the gas-air-surrounding the cool soda cooling down and depositing itself onto the side of the can. So, thermal energy must decrease.
Answer:
Due to its natural shape, it is an animal cell. Plant cells are boxed-shaped
The given reaction is A---> products
Trial-1: The initial concentration of A is 0.10 M when the initial rate is 0.015 M/s
Trial-2: The initial concentration of A is 0.40 M when the initial rate is 0.060 M/s
Let the order be m
Rate law for first trial will be:
Rate law for second trial will be:
Rate- 2/ Rate-1 :
So, m = 1
Therefore the order of the reaction is 1
Answer:
Compound 1- ionic solid
Compound 2- can't really decide
Compound 3- molecular solid
Explanation:
An ionic solid has a very high melting point. It is hard but not brittle. It's solution or melt but not it's solid conducts electricity. Compound 1 is an ionic solid.
We can't really decide on compound 2 since it is brittle yet it's solution conducts electricity.
Lastly, compound 3 is a molecular solid since it has a low melting point.