Which of the following is a combustion reaction? a а
Fe (s) + S (s) --→ FeS
b
ZnS + O2 → Zn2O + SO2
c с
Ca + 2H20 + Ca(OH)2 + H2
d
C₂H4 + O2 CO2 + H₂O

Where are the following questions

Order of filling levels and sublevels of electrons: 1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²3f¹⁴5d¹⁰6p⁶for an element with 5 electrons in the 3d energy level: full configuration: 1s²2s²2p⁶3s²3p³.

Those are different gas lawshere is a brief description of themcharles's law states that volume and temperature are directly proportional to each other as long as pressure is held constant.  boyle's law asserts that pressure and volume are inversely proportional to each other at fixed temperature.gay-lussac's law introduces a direct proportionality between temperature and pressure as long as it is at a constant volume.    source: