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Zanzabum
2 years ago
15

If the absorbance of the 10μM solution is 0.24, what should be the absorbance of the 50μM? Write answer to two decimal places.

Chemistry
1 answer:
Phoenix [80]2 years ago
3 0
Absorbance/Concentration = Constant.

That is, absorbance is directly proportional to concentration.

Therefore,

0.24/10 = x/50, where x is the absorbance at 50 micro m.

Calculating for x;
x=50* (0.24/10) = 1.20 (correct to 2 decimal places)
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5 0
1 year ago
Read 2 more answers
Potassium iodide reacts with lead(II) nitrate in this precipitation reaction: 2 KI(aq) + Pb(NO3)2(aq) → 2 KNO3(aq) + PbI2(s) Wha
andrew11 [14]

Answer:

a. 174 mL

Explanation:

Let's consider the following reaction.

2 KI(aq) + Pb(NO₃)₂(aq) → 2 KNO₃(aq) + PbI₂(s)

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2 × 0.0174 mol = 0.0348 mol

The volume of a 0.200 M KI solution that contains 0.0348 moles is:

0.0348 mol × (1 L / 0.200 mol) = 0.174 L = 174 mL

5 0
2 years ago
It’s about the periodic table of elements
Pie
Yes what the other person said can I plz get an thanks
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