The number of grams of Mgo that are produced is calculated as follows
calculate the moles of Mg used
that is moles =mass/molar mass
= 3.45 g/ 24.305g/mol = 0.142 moles
write the equation for reaction
that is 2 Mg + O2 = 2 MgO
by use of mole ratio between Mg to Mgo which is 2:2 this implies that the moles of Mgo is also 0.142 moles
mass of Mgo= moles x molar mass of MgO
molar mass of Mgo = 24.305 + ( 3x15.999) = 72.302 g/mol
mass= 0.142 mol x 72.302 g/mol= 10.27 grams
Use google or bing to see
Diamond for example, will not conduct electricity as there are no mobile ions or electrons to carry electric charge. all the electrons in the carbon atoms in diamond are used for covalent bonding.
another example is chlorine gas, there are also no mobile electrons to carry electric charge.
most covalent compounds cannot conduct electricity, but most ionic and metallic can. however, there are exceptions of course!
Answer:
they determine the physical and chemical properties of the atom
Explanation:
To give the cell structure and protection.. it also filters molecules that pas through in and out the cell
