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Chemistry
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23 Nov 2019

A 6.00-V battery is connected across a 2.00-kΩ resistor.

A) How much current (A) and how many electrons/second flow through the circuit?

B) How many joules of heat are produced for each electron?

C) If the circuit operates for 30.0 min, how many moles of electrons will have flowed through the resistor?

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8 Aug 2019
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Related questions

for the following battery: Cd(s)line CdCl2(aq)double lineCl^-(aq) line Cl2(l) line C(s)

A) Write the reduction half reaction occuring at the C(s)electrode . (Include physical states of reactants andproducts.)

C(s) electrode: please provide.

E^*=1.4 V

B) From which electrode will electrons flow from the batteryinto a circuit.

1. Cd(s) electrode

2.C(s) electrode

C) calculate the mass of Cl2 consumed if the battery delivers aconstant current of 713 A for 30.0 min.

Answer must be in Kg.


PV Work

The joule (J) is a unit of energy. Recall that energy may be converted between many different forms such as mechanical energy, thermal energy (heat), chemical energy, electrical energy, and light.

The mechanical energy produced by a system is called work. When work is accomplished through the changing volume of a gas, it is called PV work and is given by the formula w=−PΔV, where w is the work, P is the external pressure, and ΔV is the change in volume. If the volume change and pressure are in liters and atmospheres respectively, then the work will have units of liter-atmospheres, which can be converted to joules using the conversion factor 1 L⋠atm=101.3 J.

Work can also be expressed as force multiplied by distance: w=F×d, where w is the work in joules, F is the force in newtons, and d is the distance in meters. Note that 1 N⋠m=1 J.

Part A

A piston has an external pressure of 9.00 atm. How much work has been done in joules if the cylinder goes from a volume of 0.160 liters to 0.550 liters?

Express your answer with the appropriate units.

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