Some policies they might do is to put limits on water usage, like making sure that people don't use too much water in baths and when they are tending to their gardens.
An acid, acids have a pH less than 7
Answer:
a lack of genetic variety
first one is the correct one
Answer:
From least polar covalent to most polar covalent;
S-I< Br-Cl < N-H< Te-O
From most ionic to least ionic
Cs-F> Sr-Cl> Li- N> Al-O
Explanation:
Electro negativity is the ability of an atom in a bonding situation to attract the electron pair of a bond towards itself.
Electro negativity difference between two atoms determines the nature of bond existing between any two atoms. When this difference is large, an ionic bond exists in the compound. However, an intermediate difference in electro negativity implies the existence of a polar covalent bond.
Hence, going by electro negativity differences as mentioned in the question, the bonds in the answer were arranged in order of increasing polar covalent nature or decreasing ionic nature as shown.
Other than to say that I see why you are having trouble, I think you could use either.
Having said that, the blue is far more pronounced going from 7 to 9. Seven is more of a dirty blue at 7. It is sky blue at 9. I would pick that.
When you look up it's pH it is given as 7.6 which is about as slightly basic as you can get. At that point it starts to turn blue.
Methyl Red is really weird stuff.
It is red under pH = 4.4 which definitely acidic and yellow above 6.2. It is orange in between.
I would still go with Bromothymol blue, but I'm betting that either could be used.
I hope this is a discussion question, because if you want my honest opinion, it's too close to call.
