How many atoms of hydrogen are represented in 2(NH4)2SO4?
When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of Na?
Na (s) + H2O (g) NaOH (aq) + H2 (g)
Which chemical equation best illustrates the Law of Conservation of Mass?
A. 2H2O ---> H2 + O2
B. CH4 + 3O2 ---> CO2 + 2H2O
C. Al4C3 + 3H2O ---> CH4 + 4Al(OH)3
D. Zn + 2HCl ---> ZnCl2 + H2
When the following equation is balanced with the lowest whole number coefficients possible, what is the coefficient in front of Ca(OH)2?
Ca(OH)2 + H3PO3 H2O + Ca3(PO3)2
How many atoms of phosphorus are represented in 2Ca3(PO4)2?
Why is the total mass always conserved in a chemical reaction? Be sure that your explanation includes the discussion of atoms and bonds.
Write the complete balanced equation for the following reaction:
C7H6O + O2 CO2 + H2O
Write the complete balanced equation for the following reaction:
FeCl3 + Na2CO3 Fe2(CO3)3 + NaCl