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VARVARA [1.3K]
3 years ago
14

4. A big league hitter attacks a fastball! The ball has a mass of 0.16 kg. It is pitched at 38 m/s. After the player hits the ba

ll, it is now traveling 44 m/s in the opposite direction. The impact lasted 0.002 seconds. How big of a force did the ballplayer put on that ball?
Chemistry
1 answer:
tekilochka [14]3 years ago
4 0
The change in momentum of the ball is
0.16 (44 - 38) = 0.96 kg m/s
And this should equate to the impulse delivered by a hitting force
F t = 0.96
F (0.002) = 0.96
F = 480 N<span />
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Calculate the solubility in g/l of lead (ii) fluoride in water at 25 oc if ksp of pbf2 is 4. 1 x 10-8.
Svetlanka [38]

The solubility of Lead(II)Fluoride is 2.17 × 10⁻³ g/L in water at 25°C.

At a specific solution temperature, a solid salt compound can entirely dissolve in pure water up to a predetermined molar solubility limit. The dissociation stoichiometry ensures that the molarities of the constituent ions are proportionate to one another. The saturable nature of the solution causes them to also coexist in a solubility equilibrium with the solid component. At this temperature, a solubility product constant Ksp is calculated using the solubility product of their molarity values.

Lead (II) fluoride has the following solubility equilibrium for its saturated solution:

                   PbF_2(s) ⇄ Pb^2^+ (aq) + 2F^- (aq)

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This compound dissociates in a 1:2 ratio of ions. For the compound dissolved in pure water, the Ksp is expressed in terms of the molar solubility "x" as:

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6 0
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How many atoms are in a sample of 68.7 g copper (Cu)?
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