Otocz kółkiem symbole pierwiastków chemicznych

na, h2o, ki, o, s, co, mgo, co, si, al, fe2o3

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

In which block of the periodic table is uranium (u) found? s blockd blockp blockf block