mansnothot316
02.10.2019 •
Chemistry
Aspherical ball of lead has a diameter of 2.5 cm . what is the mass of the sphere if lead has a density of 11.34 g/cm3? (the volume of a sphere is (43)πr3 where r is the radius.)
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Ответ:
volume = πr²
since Diameter = 2.5 cm
then radius = 1.25cm
∴ volume = π x (1.25cm)³
≈ 6.1359 cm³
Thus mass = 6.1359 cm³ x 11.34 g / cm³
= 69.58 g
Ответ:
B. They Increase the [OH-]
Explanation:
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