Why do hot water heaters lose their efficiency quicker in households with hard water?
A) The hard water calcium and magnesium ions corrode the heating element.
B) The hard water calcium carbonate deposits oxidize the inner tank wall.
C) The calcium carbonate on the inner surface of the hot water tank builds up to the point that it insulates the water from the heating element.
D) The hard water calcium ions exchange with iron ions from the inner metal wall which react with the water heater base to form rust and deteriorate the bottom of the tank.
Answer: C
You might also like to view...
Why are distant stars redder than nearby stars of the same spectral type?
What will be an ideal response?
As you increase in altitude in the atmosphere, the speed of sound _________
Fill in the blank(s) with correct word
What is coherent light?
a. light of a single wavelength b. light that is all in phase c. light that is polarized in one direction d. none of the above
One can reverse the north and south poles of an electromagnet by reversing the direction of current flow through it
Indicate whether the statement is true or false