08/19/24

A graduated cylinder contains 49.72 mL of water. What is the new water level, in mL, after 25.6 g of a metal with a density of 8.21 g / mL is submerged in the water?
Please do not forget significant figures and units!
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12/02/23

Answer the four questions below regarding a particular type of alkaline battery in which the following half-reactions are used:
Answer the four questions below regarding a particular type of alkaline battery in which the following half-reactions are used:2MnO2 ​(s) + H2​O(l) + 2e- Mn2​O3 ​(s) + 2OH- (aq) ... more
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12/02/23

Determine the equilibrium constant at 255 K for the following reaction under acidic conditions.
Determine the equilibrium constant at 255 K for the following reaction under acidic conditions.4H+(aq) + MnO2​(s) + 2Fe2+(aq) Mn2+(aq) + 2Fe3+(aq) + 2H2O(l)The two half-reactions are:MnO2 ​(s) +... more
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02/19/15

An electron has an uncertainty in its position of 584pm. What is the uncertainty in its velocity?
Express your answer with the appropriate units.
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