Explanation:
Any orbital can hold a maximum of 2 electrons with opposite spin. The first shell has one 1s orbital and holds 2 electrons. The second shell holds 8 electrons; 2 in a 2s orbital and 6 in three 2p orbitals. The third shell holds 18 electrons; 2 in a 3s orbital; 6 in three 3p orbitals; and 10 in five 3d orbitals.
Answer:
a. BaCl2 is ionic compound.
b. CH4 is covalent compound.
b. MnO2 is ionic compound.
e. H2S is covalent compound.
c. H3AsO4 is ionic compound.
f. CH3OH is covalent compound.
Explanation:
BaCl2, MnO2 and H3AsO4 are ionic compounds due to the presence of ionic bond between the atoms while on the other hand, CH4, H2S and CH3OH are covalent compounds due to the presence of covalent bond between their atoms. In covalent bonds, sharing of electrons occur whereas in ionic bonds, complete transfer of electrons occur from one atom to another atom.
Answer is: the molarity of the solution is 0.336 M.
m(Ca(NO₃)₂) = 127 g; mass of calcium nitrate.
n(Ca(NO₃)₂) = m(Ca(NO₃)₂) ÷ M(Ca(NO₃)₂).
n(Ca(NO₃)₂) = 127 g ÷ 164.1 g/mol.
n(Ca(NO₃)₂) = 0.77 mol; amount of calcium nitrate.
V(solution) = 2300 mL ÷ 1000 mL/L.
V(solution) = 2.3 L.
c(Ca(NO₃)₂) = n(Ca(NO₃)₂) ÷ V(solution).
c(Ca(NO₃)₂) = 0.77 mol ÷ 2.3 L.
c(Ca(NO₃)₂) = 0.336 mol/L; molarity of the solution.
The study of the elements and forms of matter.