I really need the help, come on please, I got a Walmart gift CARD for anyone who can fill this out correctly Balancing Equations Worksheet
1) Na3PO4 + KOH → NaOH + K3PO4
2) MgF2 + Li2CO3 → MgCO3 + LiF
3) P4 + O2 → P2O3
4) RbNO3 + BeF2 → Be(NO3)2 + RbF
5) AgNO3 + Cu → Cu(NO3)2 + Ag
6) CF4 + Br2 → CBr4 + F2
7) HCN + CuSO4 → H2SO4 + Cu(CN)2
8) GaF3 + Cs → CsF + Ga
9) BaS + PtF2 → BaF2 + PtS
10) N2 + H2 → NH3
11) NaF + Br2 → NaBr + F2
12) Pb(OH)2 + HCl → H2O + PbCl2
13) AlBr3 + K2SO4 → KBr + Al2(SO4)3
14) CH4 + O2 → CO2 + H2O
15) Na3PO4 + CaCl2 → NaCl + Ca3(PO4)2
16) K + Cl2 → KCl
17) Al + HCl → H2 + AlCl3
18) N2 + F2 → NF3
19) SO2 + Li2Se → SSe2 + Li2O
20) NH3 + H2SO4 → (NH4)2SO4

1) 1 Na3PO4 + 3 KOH  3 NaOH + 1 K3PO4

2) 1 MgF2 + 1 Li2CO3  1 MgCO3 + 2 LiF

3) 1 P4 + 3 O2  2 P2O3

4) 2 RbNO3 + 1 BeF2  1 Be(NO3)2 + 2 RbF

5) 2 AgNO3 + 1 Cu  1 Cu(NO3)2 + 2 Ag

6) 1 CF4 + 2 Br2  1 CBr4 + 2 F2

7) 2 HCN + 1 CuSO4  1 H2SO4 + 1 Cu(CN)2

Explanation:

8) 1 GaF3 + 3 Cs  3 CsF + 1 Ga

9) 1 BaS + 1 PtF2  1 BaF2 + 1 PtS

10) 1 N2 + 3 H2  2 NH3

11) 2 NaF + 1 Br2  2 NaBr + 1 F2

12) 1 Pb(OH)2 + 2 HCl  2 H2O + 1 PbCl2

13) 2 AlBr3 + 3 K2SO4  6 KBr + 1 Al2(SO4)3

14) 1 CH4 + 2 O2  1 CO2 + 2 H2O

15) 2 Na3PO4 + 3 CaCl2  6 NaCl + 1 Ca3(PO4)2

16) 2 K + 1 Cl2  2 KCl

17) 2 Al + 6 HCl  3 H2 + 2 AlCl3

18) 1 N2 + 3 F2  2 NF3

19) 1 SO2 + 2 Li2Se  1 SSe2 + 2 Li2O

20) 2 NH3 + 1 H2SO4  1 (NH4)2SO4

b.

the accuracy of the data.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.