Why is NASA still using some equipment from the 1960s?

a
NASA has a fixed budget that is less funding than they had during the space race.
b
The machinery is efficient, so the next generation of engineers didn't waste time designing a new one.
c
Brevard county doesn't collect enough taxes for them to build a new one.
d
It has never broken, so why replace it. They built a very good product back then.

Calculate the ratio of h+ ions to oh– ions at a ph = 6. find the concentration of h+ ions to oh– ions listed in table b of your student guide. then divide the h+ concentration by the oh– concentration. record this calculated ratio in table a of your student guide. compare your approximated and calculated ratios of h+ ions to oh– ions at a ph = 6. are they the same? why or why not? record your explanation in table a. what is the concentration of h+ ions at a ph = 6? mol/l what is the concentration of oh– ions at a ph = 6? mol/l what is the ratio of h+ ions to oh– ions at a ph = 6? : 1