What color is phenolphthalein in a solution that has a pH of 10?

When curium-242 is bombarded with an alpha particle, two products are formed, one of which is a nudge on. what is the other product

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom