3) Please assist with balancing the following equations.
? NO + ? O2→ ? NO2
? KClO3→ ? KCl + ? O2
? NH4Cl + ? Ca(OH)2→ ? CaCl2 + ? NH3 + ? H2O
? NaNO3 + ? H2SO4→ ? Na2SO4 + ? HNO3
? PbS + ? H2O2→ ? PbSO4 + ? H2O
? Al2(SO4)3 +? BaCl2→ ? AlCl3 + ? BaSO4
7) Please assist with what is the mass percentage composition of the elements in the following compounds? Please assist with rounding the answer to the nearest tenth.
Potash, K2CO3 ? % K ? % C ? % O
Gypsum, CaSO4 ? % CA ? % S ? % O
Saltpeter, KNO3 ? % K ? %N ? % O
Caffeine, C8H10N4O2 ? % C ?%H ? % N ? % O
Given hint: Can you help recall the relationship between the mass percentage composition and the formula weight.
You can find the answers for the balanced equations in the explanation box below for part seven the answers are the... View the full answer