What is the mass of 2.70 moles of magnesium chloride, mgcl2?

The mass of magnesium chloride is 257.1 grams.

Explanation:

To calculate the mass of magnesium chloride for given number of moles, we use the equation:

We are given:

Moles of magnesium chloride = 2.70 moles

Molar mass of magnesium chloride = 95.21 g/mol

Putting values in above equation, we get:

Hence, the mass of magnesium chloride is 257.1 grams.

i would say b

explanation:

but i think i would need more information than that

  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-