The density of lead is 11.3
g/ml
. the water level in a graduated cylinder initially at 206
ml
rises to 287
ml
after a piece of lead is submerged. what is the mass in grams of the lead?

915 g

Explanation:

The volume of lead (V) is equal to the difference between the final level of water and the initial level of water.

V = 287 mL - 206 mL = 81.0 mL

The density of lead (ρ) is 11.3 g/mL. We can find the mass of lead (m), in grams, using the following expression.

ρ = m/V

m = ρ × V

m = 11.3 g/mL × 81.0 mL

m = 915 g

it means there are 3 atoms of oxygen

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