- How can something have a certain PKa and PKb is it measured in a certain ammount of water.?

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A reaction produced 52.1 g of kcl how much o2 was produced in grams? ~ x + y + z = 3, x² + y² + z² = 5, x³ + y³ + z³ = 7 ➪ x⁴ + y⁴ + z⁴ = ? If I save 300 dollars every 2 weeks for 6months how much will I have? A 25.0mL solution containing .60M HCl was titrated with 0.50M NaOH. Calculate the pH before the titration and at equivalence point? If 5sinθ = 3 determine the value of:
1. cos (θ-360)
2. Tan (squared)θ
3. Sin θ x cos θ (all divided by cos (squared θ)?