The dissolving power of water is very important for life on Earth. Wherever water goes, it carries dissolved chemicals, minerals, and nutrients that are used to support living things. Because of their polarity, water molecules are strongly attracted to one another, which gives water a high surface tension.
First you need to balance the equation. Ba(OH)2+2HNO3=Ba(NO3)2+H2O. Then you can get the ratio of mole number of the reactants. The ratio is Ba(OH)2:HNO3=1:2. So the molarity of Ba(OH)2 is 38.5*0.85/2/20=0.82 molar.
Answer:
lose electron
Explanation:
If the oxidation number is positive, this means that the atom loss electrons.
Losing electrons makes the atom lose some of its negative charge and become more positively charged.
Hope that helps.