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azamat
3 years ago
10

An 84.84 g sample of steel is added to a 100-ml graduated cylinder with 45.0 ml of water. if the resulting water level is 55.5 m

l, what is the volume of the steel?
Chemistry
2 answers:
Elden [556K]3 years ago
6 0
The volume of the steel that is described above is obtained by water displacement method. This means that the volume can be calculated by subtracting the initial volume from the final volume. This will give us an answer of,
                             volume of steel = 55.5 mL - 45 mL = 10.5 mL

o-na [289]3 years ago
5 0

Answer:

10.5 mL

Explanation:

This is related to the Archimedes principle which stated that “A body submerged in a fluid at rest experiences an upward vertical thrust equal to the weight of the volume of fluid dislodged by the body." Or in simpler words, the volume of the fluid displaced is equal to the volume of the body submerged in it. So, the volume displaced is:

Volume displaced = 55.5 mL – 45.0 mL = 10.5 mL

Then, the volume of the steel is 10.5 mL

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Use standard reduction potentials to calculate the equilibrium constant for the reaction: 2Cr3+(aq) + Pb(s)2Cr2+(aq) + Pb2+(aq)
inn [45]

Answer:

3.47 ×10^-10

Explanation:

The equation of the reaction is 2Cr3+(aq) + Pb(s)------->2Cr2+(aq) + Pb2+(aq)

A total of two moles of electrons were transferred in the process. The chromium was reduced while the lead was oxidized. Hence the lead species will constitute the oxidation half equation and the chromium will constitute the reduction half equation.

E°cell = E°cathode - E°anode

E°cathode = -0.41 V

E°anode = -0.13 V

E°cell = -0.41 -(-0.13) = -0.28 V

From

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4 0
3 years ago
The purpose of the salt bridge in an electrochemical cell is to ____.
IgorLugansk [536]

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Explanation:

Salt bridge -

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4 0
4 years ago
20 points!!!
MariettaO [177]

I don't know if this was your answer choice but I actually got the answer to be toothpaste.

hydrated alumina, calcium carbonate, make up toothpaste

Again idk if this was an answer choice but I hope this helps, have a good day, sorry if not. c;

5 0
3 years ago
Read 2 more answers
Untitled Section
ipn [44]

Answer:

B.

Explanation:

Hope this helps.

7 0
3 years ago
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