Answer:
D. His device would not be successful because radio waves do not have enough energy to kill the bacteria.
Explanation:
Answer:
i am thinking that they will be extinct
Explanation:
if their habitat is dying then they are dying and it would be sad
Answer:
No
Explanation:
Dissolving sugar in water is an example of a physical change.
A chemical change produces new chemical products. In order for sugar in water to be a chemical change, something new would need to result. If you evaporate the water from a sugar-water solution, you're left with sugar.
Answer:
[OH⁻] = 1.77 × 10⁻¹¹ M
Solution:
In order to calculate concentration of hydroxide ion i.e. [OH⁻] first we will find the pOH by using following relation,
pH + pOH = 14
Putting value of pH given and solving for pOH,
3.25 + pOH = 14
pOH = 14 - 3.25
pOH = 10.75
As ,
pOH = -log [OH⁻]
So,
[OH⁻] = 10^-pOH
Putting value of pOH,
[OH⁻] = 10⁻¹⁰·⁷⁵
[OH⁻] = 1.77 × 10⁻¹¹ M
