Consider the following common ways of chemically producing electricity: lead storage battery, Leclanche dry cell, alkaline dry cell, Ni-Cad battery, fuel cell, lithium battery.
A. Which of these can be safely recharged
B. Which of these provide a constant voltage?
C. Which one of these can provide useful voltages to common electronic devices while still being the smallest and the most lightweight?
D. Which of these has easy replaced reagents, allowing the same device to be used for years?
*I'm sure there r more than one answer for some questions
2007-08-09 11:01:13 · 1 answers · asked by whyMe 2 in Science & Mathematics ➔ Chemistry
A. Lead storage and NiCad (although Alkalines have some capability to be recharged -- they are not considered secondary (rechargeble) cells). Fuel Cells -- you simply keep filling them with water -- that's not the same as recharging them.
B. Fuel Cells are the only ones that provide constant voltage. All others drop off with use.
C. Lithium batteries are the most lightweight and have the highest energy density per unit volume.
D. Lead storage, and fuel cells.
.
2007-08-09 11:51:53 · answer #1 · answered by tlbs101 7 · 0⤊ 0⤋