Answer:
1.76
Explanation:
There is some info missing. I think this is the original question.
<em>A chemist dissolves 660.mg of pure hydroiodic acid in enough water to make up 300.mL of solution. Calculate the pH of the solution. Be sure your answer has the correct number of significant digits.</em>
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Step 1: Calculate the molarity of HI(aq)
M = mass of solute / molar mass of solute × liters of solution
M = 0.660 g / 127.91 g/mol × 0.300 L
M = 0.0172 M
Step 2: Write the acid dissociation reaction
HI(aq) ⇄ H⁺(aq) + I⁻(aq)
HI is a strong acid, so [H⁺] = 0.0172 M
Step 3: Calculate the pH
pH = -log [H⁺]
pH = -log 0.0172
pH = 1.76
A nonmetal and a nonmetal will make molecular compounds like H2O and CO2
Answer:
That is incorrect, it's not all the the choices. The Answers are, A and D.
* The area was once a forest
* The area was probably covered by water
Explanation:
This is the answer for Earth science in Ed. I'm not sure if it's the correct answer on anything else but it should be. Hope this helped you out!
The actual atomic radius of Adamantium is 327pm. The experimentally estimated value of atomic radius of adamantium is 312pm. The percent error can be calculated as,
Percent error = (actual value-estimated value)/actual value *100
= 327-312/327*100
=Approx. 5 percent error in their prediction.
1. Air
Others are chemical compounds, air is a mixture.
2. Carbon monoxide
Others are elements, carbon monoxide is compound.
3. Air
Others are compounds, air is not.
4. Sodium metal
Sodium metal is element, others are compounds.