Practice Pakistan questions with answers and explanations.
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Maximum height is H = u²sin²θ/(2g).
Substitution gives the stated value.
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Average disappearance rate = decrease in concentration divided by time.
The positive magnitude is used for a reactant-disappearance rate.
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Range is R = u²sin2θ/g for equal launch and landing heights.
Substitution gives the stated value.
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Average disappearance rate = decrease in concentration divided by time.
The positive magnitude is used for a reactant-disappearance rate.
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Time of flight is T = 2u sinθ/g.
Substitution gives the stated value.
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Kc contains product concentrations over reactant concentrations.
Each concentration is raised to its stoichiometric coefficient.
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An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.
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An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.
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An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.
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An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.
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An equilibrium shifts in the direction that opposes the imposed change.
Applying this rule gives the stated direction.
Choose an option to check your answer.
For a 1:1 salt, both ion concentrations equal the molar solubility s.
Therefore Ksp = s².
