Two elements X and Y have atomic number 8 and 13 respectively, The formula of the possible compound between X and Y is

What is the composition, in atom percent, of an alloy that consists of 4.5 wt% pb and 95.5 wt% sn? the atomic weights for pb and sn are 207.19 g/mol and 118.71 g/mol, respectively.(a) 2.6 at% pb and 97.4 at% sn(b) 7.6 at% pb and 92.4 at% sn(c)97.4 at% pb and 2.6 at% sn(d) 92.4 at% pb and 7.6 at% sn

How have the greenhouse gasses increased from the year 2000 to 2018

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !