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Choice C) RbOH, HBr cannot be mixed together to form a buffer solution.
Answer: skeletal equation :
The products are sodium nitrate and barium sulphate.
balanced equation :
Explanation:
A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.
The skeletal equation is:
The balanced chemical equation is:
Density=mass/volume so mass= volume*density
Volume=40*20*9
Mass=7200*2.75
=19800
Now turn it into kg which will be
19800\1000
=19.8
Answer: Atmosphere
Explanation:
if a scientist wants to predict the weather, they should most directly study Atmosphere.