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Aleksandr [31]
3 years ago
6

30 POINTS MATCH THE DEFINITIONS PLEASE, ITS PROBABLY EASY FOR U THO

Chemistry
1 answer:
TiliK225 [7]3 years ago
5 0

Answer:

(going down the line)

1. matter

2. hypothesis

3. energy

4. independent variable

5.  theory

6. quantitative data

7. dependent variable

8. constant

9. law

10. qualitative data

Explanation:

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7 0
3 years ago
The solubility of calcium sulfate at 30°c is 0.209 g/100 ml solution. calculate its ksp.
inessss [21]
Answer is: Ksp for calcium sulfate is 2.36·10⁻⁴.
Balanced chemical reaction (dissociation):
CaSO₄(s) → Ba²⁺(aq) + SO₄²⁻(aq).
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n(CaSO₄) = m(CaSO₄) ÷ M(CaSO₄).
n(CaSO₄) = 0.209 g ÷ 136.14 g/mol.
n(CaSO₄) = 0.00153 mol.
s(CaSO₄) = n(CaSO₄) ÷ V(CaSO₄).
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Ksp = [Ca²⁺] · [SO₄²⁻].
[Ca²⁺] = [SO₄²⁻] = s(CaSO₄).
Ksp = (0.0153 M)² = 2.36·10⁻⁴.
8 0
3 years ago
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