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Questions in chemistry

[Open]Is milk a mixture, compound, or element?

[Open]What is the liquid fraction?

[Open]Do earthquakes most often occur at faults that are away from plate boundaries?

[Open]Why is displacement useful in finding the density of an irregularly shaped object?

[Open]What is the chemical formula for the reaction between aluminum and oxygen?

[Open]What is the result of adding KF to an equilibrium mixture of the weak acid HF? \[ \text{HF(aq) ⇔ H}^+ \text{(aq) + F}^- \text{(aq)} \] A. \(\text{F}^- \) concentration decreases B. The dissociation constant, \( K \), increases C. \(\text{HF} \) concentration decreases D. \(\text{H}^+ \) concentration decreases

[Open]Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid according to

[Open]What is titration? Define it.

[Open]On the seashore, pebbles that are rough and uneven become smooth and rounded. Explain how they become smooth and rounded.

[Open]Ammonia and sulfuric acid react to form ammonium sulfate. Determine the starting mass of each reactant if 20.3 g of ammonium sulfate is produced and 5.89 g of sulfuric acid remains unreacted.