Answer:
the pool's circumference is 37.7 ft^2 (rounded to nearest tenth).
Answer:
There is 1 Sodium in NaCl, but 2 Sodiums in the sulfide. I can’t write it properly. But the “2” should be a subscript.
Explanation:
c(desired)*V(final) = c(conc)*V(add)
V(add) = c(desired)*V(final) / c(conc) = 2*0.5 / 12 = 0.0833 cm3 = 83.3 mL of 12 M HCl needs to be added.
First add the distilled water: 416,7 mL.
Then add the conc. HCL by using an autopipette 8 times with 10.0 mL, 1 time with 3.0 mL and then 1 time with 300 microliter .
Answer:
As the axial tilt increases, then the seasonal contrast increases so that winters are colder and summers are warmer in both hemispheres. The northern hemisphere is tipped away from the Sun, producing short days and a low sun angle. What kind of effect does the earth's tilt and subsequent seasons have on our length of daylight (defined as sunrise to sunset). Over the equator, the answer is not much.
As for #5, it's mixed at the end of my answer, but just remember the spring equinox marks the change from 24 hours of darkness to 24 hours of daylight at Earth's poles .
