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Nina [5.8K]
3 years ago
7

A 0.8kg object displaces 500ml of water what is its specific gravity

Chemistry
1 answer:
worty [1.4K]3 years ago
3 0

Specific gravity is the ratio of density of substance and density of water

We know that density of water = 1 g /mL at standard conditions

now as given that the 0.8 Kg of the substance / object is able to displace 500mL of water , it means that

Mass of object = 800g

The volume occupied by 800g of object = 500 mL

Density = mass / volume

Density of object = 800 / 500= 1.6 g / mL

The specific gravity of object = density of object  / density of water = 1.6 / 1 = 1.6 (no units)

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As the nickel is in the cathode, this means that this element is being reducted while Cadmium is being oxidized, therefore the REDOX reaction would be:

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Cd(s) ------------> Cd²⁺ + 2e⁻       E°₁ = 0.40 V

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[Ni²⁺] = 5/3.7558

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Answer:

\large\boxed{\text{28 mol of O$_{2}$}}

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