Astudent dissolved a sample in hexane, spotted it on to a tlc plate and eluted using ethyl acetate. after visualizing the tlc plate under a uv lamp, the student found their sample had two spots corresponding to rf values of 0.31 and 0.85. they ran the tlc plate again, this time dissolving the compound in dicholoroacetic acid and using ethyl acetate as the eluent. what will be the rf values for each spot? -0.55 and 0.81 -0 and 0 -0.31 and 0.85

it's c (engineer's do their work with mechanical stuff not on any living being)

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .

sup bro, im dumb, but this is what i found xd

"the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface"