1 poin 12. Which scientist said that electrons exist in discrete energy levels?
A. Thomson
B. Rutherford
C. Bohr
D. Dalton

Select the correct answer. which statement is true about a polarized object? o a. it gains electrons and becomes negatively charged. ob. it gains protons and becomes positively charged. oc. the number of positive and negative charges can be the same. od. it has to be a metal. o e. there is no change in the distribution of the charge in the object. reset next what

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.