Which of the following is not a step in the conversion of 25 l to hm3?

fraction cubed: one m over ten to the negative second power m
one ml over ten to the negative third power l
one cubic cm over one ml
fraction cubed: one hm over ten to the second power m

The answers to the Chemical Formulas and Reaction Unit
1.(C),2.(B),3.(C),4.(A),5.(A),6.(C),7.(B),8.(B),9.(A),10.(B),11.(D),12.(C),13.(C).

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer