What kinds of things could a magnet make another object or magnet do without touching it?

Chemistry

1 answer:

Sidana [21]2 years ago

8 0

Answer:

Magnets can be used to make other magnets and things made of iron move without being touched. Something that has been electrically charged can make other things move without touching them.

Explanation:

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2 years ago

For a beryllium-gold voltaic cell containing Be2+(aq) and Au3+(aq) solutions, do the following. (a) Identify the cathode. (Inclu

OLEGan [10]

Answer: Gold act as cathode.

Explanation:

Standard potential for an electrochemical cell is given by:

$E^0{cell}$ = standard electrode potential = $E^0{cathode}-E^0{anode}$

The $E^0$ values have to be reduction potentials.

Reduction potentials for given elements

$E^o_{Be^{2+}/Be}=-1.97V$

$E^o_{Au^{3+}/Au}=+1.40V$

The element Be with negative reduction potential will lose electrons undergo oxidation and thus act as anode.The element Au with positive reduction potential will gain electrons undergo reduction and thus acts as cathode.

Cathode : $2Au^{3+}+6e^-\rightarrow 2Au$

Anode : $3Be\rightarrow 3Be^{2+}+6e^-$

$3Be+2Au^{3+}(aq)\rightarrow 2Au+3Be^{2+}(aq)$

Thus gold act as cathode.

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2 years ago

An empty vial weighs 55.32 g.

ziro4ka [17]

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