What is the correct electron configuration for a chlorine atom? A 152 252 2p 3s
B 1s 2s 2p 3s 3p6
1s? 252 352 3p5
D1s 2s 2p 3s 3p5

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

Areaction in which products can react to re-form reactants is

Water undergoes a large change in density at 0 ∘ c as it freezes to form ice. calculate the percent change in density that occurs when liquid water freezes to ice at 0 ∘ c given that