The answer is 9,3945.1023 molecules.
Magnesium and carbonate are divalent.
CH is not a molecule.
CH is not a molecule.
The number of molecules in a mole is a constant - Avogadro number;NA = 6,02214129(27)×1023 mol−1
The mass of 3 mol of ammonia is 51,093 g; the number of ammonia molecules in 3 moles is18,066422571.10e23.
Magnesium and carbonate are divalent.
This number is 50 atoms.
+2 for Mg, +4 for C, -2 for each O in MgCO3
Yes
The answer is 6,022140857.1023 x 8 = 48,177126856.1023 molecules.
You would multiply the number of grams x Avogadro's number=number of molecules: (21.6g) X (6.022x10^23)= 1.301x10^25 molecules
I believe it is Magnesium Oxide. The 2 should be subscript, denoting the presence of two atoms of magnesium. This is because magnesium has a charge of -1, versus oxygen's typical charge of +2. Two atoms of magnesium balances the compound. No, magnesium oxide would be MgO - the magnesium has an oxidation number (or charge) of +2, compared with -2 for oxygen, so one of each is needed to balance out the molecule. I don't think Mg2O exists.
CH is not a molecule.
CH is not a molecule.
magnesium is an element ----------------------------------------------- Magnesium may react with a number of different substances to form compounds. An example is magnesium reacting with oxygen to form magnesium oxide (MgO)
Multiply the number of molecules by the number of molecules per mole for that particular element or molecule (sum of the molecules/mole of each element in the molecule). The number of molecules per mole for any element can be found on charts and on the periodic table.
Three. Two chlorine atoms and one magnesium atom.