PLZ HELP- Label the starting substances “reactants” and the ending substances “products”, then answer the questions that follow: 1. NaHCO3 + HC2H3O2 > CO2 + H2O + NaC2H3O2

2. CaC2 + N2 > CaCN2 + C

3. HAsO3 > As2O5 + H2O

the answer is b & c i believe : )

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

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

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