Express each quantity in regular notation along with its appropriate unit. a. 3.60 × 1 0 5 s 3.60×10 5 s b. 5.4 × 1 0 − 5 g / c
1 answer:
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Answer:
Manganese: Mn
Explanation:
The elestron configuration would show this is 25 electrons
Atomic number : 25
this electron configuration ends in
half of the d subshell which is 10
(a) Power of bulb is 100 W, converting this into kW.
Thus,
The bulb is used for 6 hours per day for a year, in 1 year there are 365 days thus, total hours will be:
Electricity used will depend on power and number of hours as follows:
The cost of electricity is $0.15 per kW.h thus, cost of electricity for 219 kW.h will be:
Therefore, annual cost of incandescent light bulb is
(b) Power of bulb is 25 W, converting this into kW.
Thus,
The bulb is used for 6 hours per day for a year, in 1 year there are 365 days thus, total hours will be:
Electricity used will depend on power and number of hours as follows:
The cost of electricity is $0.15 per kW.h thus, cost of electricity for 54.75 kW.h will be:
Therefore, annual cost of fluorescent bulb is .