Geraldo can add a pollutant with slightly basic nature so he will have a solution of neutral pH of 7.
<h3>What is pH?</h3>
The pH of a solution is the negative logarithm to base ten of the hydrogen ions concentration of the solution.
The pH of 6.5 means that the solution is acidic.
By adding a pollutant which is slightly basic in nature, Geraldo will have a solution of neutral pH which is a pH of 7.
Learn more about pH at: brainly.com/question/24595796
Answer:
<h3>The answer is 0.81 g/cm³</h3>
Explanation:
The density of a substance can be found by using the formula
From the question
mass of metal = 10.5 g
volume = 13 cm³
We have
We have the final answer as
<h3>0.81 g/cm³</h3>
Hope this helps you
Answer:
158.004 Grams of Fe2S3
Explanation:
iron(lll) sulfide = Fe2S3 = Molar mass: 207.9 g/mol
iron(lll) bromide = FeBr3 = Molar mass: 295.56 g/mol
Since we don't have the chemical equation we will have to make one I guess.
2 FeBr3 + 3 Na2S -----> 6 NaBr + Fe2S3
449 g iron(lll) bromide = FeBr3
So we have 449/295.56 = moles of FeBr3 = 1.52 Moles
So ratio is 2:1 FeBr3 to Fe2S3
So we need 0.76 moles of Fe2S3
0.76 x 207.9 = 158.004Grams
