Covalent bonds only form when electrons are shared between two nonmetals.
I'm not sure but I think is 2H2<span> => 4H</span>+ + 4e- and O2<span> + 4H</span>+<span> + 4e</span>-<span> => 2H</span>2<span>O</span>
Mass of a sample = M = ?
Density of a sample = D = 8.9 g/cm³
Volume of the sample = 6 cm³
By using the formula = D = M / V
Density = Mass / Volume
Mass = Density x Volume
M = D x V
Putting the values of density and mass of the sample
M =8.9g/cm³ x 6cm³ =53.4 g
<span>So, the mass of the material in grams is 53.4g</span>
