Answer:
Calculate the pOH for a solution with a hydroxide ion, (OH-) of concentration of 6.49 X 10-11 M.
Calculate the pH.
Note: the answers should have three significant figures
The pOH is: Blank 1
The pH is: Blank 2
Explanation:
Answer: 0.43molO₂
Explanation:
The ideal gas law for moles is 
. If you did not know, R is the ideal gas constant, 
.
Since the temperature must be in Kelvin, we must convert our given temperature from ℃ to K. 
Now that we have the temperature converted to Kelvin, we can plug in our information to the ideal gas law for the number of moles.
Therefore, the number of moles is 0.43molO₂.
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It would depend on what the substance was. If we're talking ice to water, there doesn't have to be much of a difference; but if we're talking like gold, it has to be 1,948 degrees before it melts.
Acid + base = water + salt
KOH + HCl = H₂<span>O + KCl
hope this helps!
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In a reaction with bromine, antimony will oxidize itself to +III oxidation state forming {antimony (III) bromide
Sb(s)+Br2(l)→SbBr3(s)
Balance the equation by balancing Bromine.
2Sb(s)+3Br2(l)→2SbBr3(s)
A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products side. In other words, the mass of the elements and the charge on them are balanced on both sides of the reaction.
A chemical equation needs to be balanced because a chemical reaction is just a rearrangement of atoms of the given elements. The chemical equation needs to be balanced to follow the law of conservation of mass.
Learn more about chemical equations here:
brainly.com/question/12047033
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