the table shows the distances between a star and three celestial objects use the conversion factors to rewrite the distances in different but equivalent units

For the reaction shown, find the limiting reactant for each of the following initial amounts of reactants. 4al(s)+3o2(g)→2al2o3(s) a) 1 molal, 1 mol o2 b) 4 molal, 2.6 mol o2 c) 16 molal, 13 mol o2 d) 7.4 molal, 6.5 mol o2

What does the symbol (–hfus) indicate in a phase change?

What is the daughter nucleus produced a. when 217(at) undergoes alpha decay? b. when 103(mo) undergoes beta decay? c. when 188(hg) undergoes positron emission?