Yes.
Except that the word is equals, not eqauls.
4H2 + N2 --> 2H4N+
Fe3O4 is the mineral magnetite, with aproper chemical name of Fe(II, III) oxide. it exhibits ferrimagnetism. It has iron atoms as FeII and FeIII. An old way of writing it was FeO.Fe2O3 The balanced equation for production from the elements is :- 3Fe + 2O2 -> Fe3O4 Commercially it is made by for example redung Fe2O3 with CO 3Fe2O3 + CO = 2Fe3O4 +CO2
The little 2 in 4H2 indicates that there are two hydrogen atoms bonded in a molecule of 4H2. This notation is used in chemistry to represent the number of atoms of each element in a compound or molecule.
The 4 in 4H2 stand for "4" molecules in that equation, unless specified as being moles.
NaBH4 + 2H2O -> NaBO2 + 4H2 [1] DeltaG(298K)= -299 kJ/mol BH4 DeltaH(298K)= -231 kJ/mol BH4 (10.8 mass% H) NaBH4 + 4H2O -> NaB(OH)4 + 4H2 [2] DeltaG (298K)= -315 kJ/mol BH4 DeltaH = -247 kJ/mol BH4 (7.28 mass% H) NaBH4 + 6H2O -> NaB(OH)4.2H2O [3] DeltaG = -319kJ/mol BH4 DeltaH = -213 kJ/mol BH4 (5.48 mass% H) *Hydrolysis in Eq.[1] is not the most favorable reaction!
white oval with a 4I
O2 +4H2--> 2H2O
2Ag20 --> 4Ag + 02 Fe304 + 4H2 --> 4H20 + CuCl2
C6H12 + Cl2 --> C6H12Cl2
2C+2H4=2CH4(instead of 'equal to' use 'arrow sign').
H2 is the molecule of two Hydrogen atoms. The 4 means that there are 4 of the molecules. ■
The meaning of 4 H2 is four molecules of hydrogen.