Potassium standards gave the following emission intensities at 404.3 nm. emission from the unknown was 417. find the [k+] and its uncertainty in the unknown. (use a spreadsheet / graphing program to make a concentration vs. emission signal plot, then find the [k+] and its uncertainty in the unknown.)
sample (µg k/ml) relative emission
blank 0
5.00 124
10.00 243
20.0 486
30.0 712
unknown 417

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.