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3 years ago

5

A graduated cylinder holds 100 mL of water. A lead weight is dropped into the cylinder bringing the new volume up to 450 mL. If

the mass of the lead weight is 4000 grams, what is the density of the lead weight?

1 answer:

dolphi86 [110]3 years ago

6 0

11.43g/mL

Explanation:

Given parameters:

Volume of water in the graduated cylinder = 100mL

Volume of water + lead weight = 450mL

Mass of lead weight = 4000g

Unknown:

Density of the lead weight = ?

Solution:

Density is the mass per unit volume of a body.

Density = $\frac{mass}{volume}$

Volume of the lead weight = volume of water displaced

Volume of lead weight = 450 - 100 = 350mL

Density = $\frac{4000}{350}$ = 11.43g/mL

learn more:

Density brainly.com/question/2690299

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Complete Question

The complete question is shown on the first uploaded image

Answer:

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Explanation:

From the question we are told that

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For $Fe_{2} O_{3}_{(s)}$

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$No \ of\ moles = \frac{3.63}{2}$

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For $H_{2}$

$Concentration[H_2] = \frac{1.815}{5.4}$

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$K_c = \frac{[concentration \ of \ product]}{[concentration \ of \ reactant ]}$

Considering $H_2O \ for \ product$

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Answer:

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