What is the net ionic charge of calcium ion

In a floral arrangement, the focal area is often

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

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