The oxidation state of potassium ion K = +1
The oxidation state of oxygen ion O = -2
So, the oxidation state of O2 is = -2 x 2 = -4
Since, KBrO2 is neutral so,
(+1) + (x) + (-4) = Zero
-3 + X = Zero
So, X = +3
The oxidation state of individual bromine atom in KBrO2 is +3
Answer:
See explanation
Explanation:
Hydrogen has a valency of +1 or -1. Its electronic configuration is 1s1.
The 1s sub-level (first shell) is known to hold two electrons. This means that hydrogen may either loose this one electron in the 1s level to yield H^+ or accept another electron into this 1s level to form H^- (the hydride ion).
The formation of the hydride ion completes the 1s orbital.
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Answer:</h3>
30 miles per hour faster
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Explanation:</h3>
We are given;
- Distance that Mary drove as 525 miles
- Time she took as 7 hours
- Average speed as 75 miles per hour
We are supposed to determine how fast the average speed would be if she made the trip in 5 hours.
- We know that speed is given by dividing distance by time taken.
- In this case distance remained constant
Therefore, we can determine the speed when she took 5 hours
= 525 miles ÷ 5 hours
= 105 hours
Thus, the new speed would be 105 miles per hours
But, initial speed was 75 miles per hour
Therefore, she would travel 30 miles per hour faster to cover the journey in 5 hours.
Answer:
umm.. B. a base that generates a lot of hydroxide ions in water.
1500 cm^3 ; 1 mL equals 1 cm^3
