Which mass of urea, co(nh2)2, contains the same mass of nitrogen as 101.1 g of potassium nitrate? a 22g b 30g c 44g d 60g

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

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

What is the mass of 8 moles of sodium atoms