Are these equations balanced or unbalanced? Please help me 1.)C3H8 5O2 → 3CO2 4H2O

2.)2kno3→ 2kno2 + o2

3.)2o2 +cs2→co2+2so2

4.)H2SO4 + Mg(NO3)2 →MgSO4 + HNO3

5.)2al+3h2so4→al2(so4)3+3h2

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Which position represents spring in the southern hemisphere? a) b) c) d)

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?

What happens when an atom of sulfur combines with two atoms of chlorine to produce sci2? a. each chlorine atom shares a pair of electrons with the sulfur atom. b. an electron is transferred from each chlorine atom to the sulfur atom. c. an electron is transferred from the sulfur atom to each chlorine atom. d. each chlorine atom shares all its valence electrons with the sulfur atom.