Answer:
D) 5.36 hours
Explanation:
According to mole concept:
1 mole of an atom contains number of particles.
We know that:
Charge on 1 electron =
Also, copper will produce 2 electrons. So, out of 5 moles of copper, 10 moles of electrons will be produced.
So,
Charge on 10 mole of electrons =
To calculate the time required, we use the equation:
where,
I = current passed = 50.0 A
q = total charge =
t = time required = ?
Putting values in above equation, we get:
Converting this into hours, we use the conversion factor:
1 hr = 3600 seconds
So,
Hence, the amount of time needed is 5.36 hrs.
Water has a definite volume but not a definite shape making the correct answer A.
Rubber is the only insulator in the answer options. The others are conductors, so you know that the rubber tire is the answer.
We can change a gas to a liquid by INCREASING the temperature and DECREASING the pressure