We are given with
136 g P4
excess oxygen
The complete combustion reaction is
P4 + 5O2 => 2P2O5
Converting the amount of P4 to moles
136/123.9 = 1.098 moles
Using stoichiometry
moles P2O5 = 1.098 x 2 = 2.195 moles P2O5
Answer:
C. C
Explanation:
The heating curve is a graphical representation shows that how different phases of substances change as it is influenced by the increase in temperature or heat.
Section A represents solid phase, Section B represents solid-liquid phase, section C represents liquid phase, section D represent liquid-gas phase and section E represents gas phase.
Section C of the graph shows the liquid phase of the substance gaining kinetic energy. During Phase C, heat energy is absorbed and liquid particles gain kinetic energy to change into gas form that is section E.
Hence, the correct option is C.C.
The molecular formula of a compound that has 6 carbon, 8 hydrogen, and 2 oxygen will be c6h8o2
The answer to this question would be: inner electrons
The effective nuclear charge is the net positive charge that applied to an electron of a polyelectronic atom. It was written with the formula of Zeff= Z-S where Zeff means the effective nuclear charge, Z is the nuclear charge and S is the average number of the electron between the electron and nucleus.
Since only inner electron is counted on S, the outer electron has no effect.