# Chemistry

posted by .

I am having some difficulties balancing the following equations:

Cr2O3(s)+CO(g)->Cr(s)+CO2

Ca(OH)2(aq)+Na3PO4(aq)->Ca3(PO4)2(s)+NaOH(aq)

Sb2S3(s)+O2(g)->Sb2O3(s)+SO2(g)

• Chemistry -

Cr2O3(s) + 3CO(g)->2Cr(s) + 3CO2

3Ca(OH)2(aq) + 2Na3PO4(aq) -> Ca3(PO4)2(s) + 6NaOH(aq)

## Similar Questions

1. ### Chemistry

1. Al + Pb(NO3)2 ----> Al(NO3)3 + Pb 2. FeS + O2 ----> Fe2O3 + SO2 3. C3H8 + O2 ----> CO2 + H2O I need some help balancing these equations. Thank you very much!
2. ### Chemistry

Consider the following chemical equation. Na3PO4(aq) + Ca(OH)2(aq) → Ca3(PO4)2(s) + NaOH(aq) How many grams of calcium hydroxide must react to give 2.81 g of Ca3(PO4)2?
3. ### Chemistry

3Ca(NO3)2(aq)+2Na3PO4(aq)->Ca3(PO4)2(s)+6NaNO3(aq) A.)the moles Na3PO4 required to react with 2.03 L of 0.891 M Ca(NO3)2 B.)the grams of Ca3(PO4)2 that can be obtained from 136 mL of 0.627 M Ca(NO3)2 C.)the volume of 0.76 M Na3PO4 …
4. ### Chemistry

# moles of Ca3(PO4)2 produced from 3100g Ca3(PO4)2
5. ### Chem

Balancing equations? NaOH + H3PO4 ----> Na3PO4 + H2O C3H8 + O2 ----> CO2 + H2O
6. ### Chemistry

3Ca(NO3)2(aq)+2Na3PO4(aq)->Ca3(PO4)2(s)+6NaNO3(aq) (a) the grams of Ca3(PO4)2 that can be obtained from 126 mL of 0.750 M Ca(NO3)2 (b) the volume of 0.10 M Na3PO4 needed to react with 13 mL of 0.30 M Ca3(NO3)2 (c) the molarity (M) …
7. ### Chemistry

If 0.0142 M aqueous Cl- is produced stoichiometrically according to the balanced equation in a reaction solution with a total volume of 1480 mL, how many mol of solid Ca3(PO4)2 are produced?
8. ### Chemistry

Equation: 3CaCl2 (aq) + 2 Na3PO4 (aq) → Ca3(PO4)2 (s) + 6 NaCl (aq) How many grams of Ca3(PO4)2 are formed when 450.0 g NaCl are formed in the reaction?
9. ### Chemistry

58% Ca3 (PO4) 2 how many phosphorus are in 10 kg bones?
10. ### Chemistry

Having trouble balancing redox equations. Teacher says I should use the method of half reactions and I'm not sure how. Any explanation or formula would be nice. C6H12O2 --> C2H4O2 SO2+H2O+O2 --> H2SO4 C2H6O+O2 --> CO2 + H2O

More Similar Questions