Determine the number of representative particles in each of the following. (a) 0.244 mol silver
atoms
(b) 7.19 x 10-3 mol sodium chloride
formula units
(C) 31.8 mol carbon dioxide
molecules
(d) 0.585 mol nitrogen (N2)
molecules

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '

Why is the melting of ice a physical change ?

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.