याद कार को 15m/Sec
chal से जाता hai तो उनके द्वारा
3ghnte 20 minute me तय की गयी
tatal doori gyat kijiye

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

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

In which situation can a mixture always be called a solution