What is the density of a piece of metal that has a mass of 75.8g and a volume of 7.09

1 answer:

3 0

Answer:

10.69g/cm^3 or 0.0106kg/m^3

Explanation:

10.69 g/cm^3: I wrote this answer because your question doesn't mention whether volume is in cm^3 or m^3. If its in cm^3, then this is your answer.

0.0106kg/m^3: This might also be the answer if the volume is in m^3. If it is in m^3 then you have convert grams into kilograms.

So technically since you questions incomplete, the equation for measuring density is P= m/v

P= rho (density)

m= mass

v= volume

Hope it helps- Z

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avanturin [10]

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aleksandr82 [10.1K]

Answer:

0.42%

Explanation:

∵ pH = - log[H⁺].

2.72 = - log[H⁺]

∴ [H⁺] = 1.905 x 10⁻³.

∵ [H⁺] = √Ka.C

∴ [H⁺]² = Ka.C

∴ ka = [H⁺]²/C = (1.905 x 10⁻³)²/(0.45) = 8.068 x 10⁻⁶.

∵ Ka = α²C.

Where, α is the degree of dissociation.

∴ α = √(Ka/C) = √(8.065 x 10⁻⁶/0.45) = 4.234 x 10⁻³.

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3 years ago

Elena-2011 [213]

Answer:

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Explanation:

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