Its chemical formula H2O, indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. "Water" is the name of the liquid state of H2O at standard conditions for temperature and pressure.
To determine this simply use the coefficients in the balanced equation to relate the moles of oxygen to CO2.
Here it would be 1 : 2.
Volume= Length * Width * Height
=3*3*3
=9*3
=27 cm^3
Answer : 27 cm^3
The atomic size trend in the periodic table is increasing from right to left and from top to bottom. Hence when comparing a chlorine atom and a sodium atom, it is seen that chlorine is seen on the far left side of the periodic table while sodium is seen on the far right side. This means sodium is thus greater in atomic size than a chlorine atom.
C. alpha = nucleus of a helium atom
beta = electron
gamma = photon