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Digiron [165]
3 years ago
14

A brass doorknob has a mass of 80grams and a volume of 10cubic centimeters. What is its density?

Chemistry
1 answer:
ki77a [65]3 years ago
5 0

Density = mass/volume = 80 g/10cm³ = 8 g/cm³

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Enough of a monoprotic weak acid is dissolved in water to produce a 0.0144 0.0144 M solution. The pH of the resulting solution i
alexdok [17]

Answer:

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

Explanation:

The pH of the solution = 2.46

pH=-\log[H^+]

2.46=-\log[H^+]

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HA\rightleftharpoons H^++A^-

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(0.0144-x)       x       x

The expression if an dissociation constant is given by :

K_a=\frac{[A^-][H^+]}{[HA]}

K_a=\frac{x\times x}{(0.0144-x)}

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K_a=\frac{0.003467 \times 0.003467 }{(0.0144-0.003467 )}

K_a=1.099\times 10^{-3}

The value of dissociation constant of the monoprotic acid is 1.099\times 10^{-3}.

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3 years ago
What average global temperature is maintained when there is a balance in Earth’s energy budget?
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8 0
3 years ago
Read 2 more answers
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