/> we will
(05.01 mc)
what is the mass of 0.80 moles of mg? (1 point)
a.0 7.5 x 1023 grams
b.4.8 x 1023 grams
c.30 grams
d.19 grams

 The answer is:  [D]: " 19 grams " .

Explanation:

Given:  0.80 moles of Mg ;  

Convert to "g" (units of "g" ; that is "grams" of "Mg" ).

Using The Period Table of Elements, the molar mass of "Mg"  is:

       24.305 g / mol

0.80 mol * (24.305 g Mg / 1 mol Mg)  = ?  g  Mg  ?? ;

The units of "mol" cancel out;  since:  " mol/ mol = 1" ;  

and we have:  (0.80 * 24.305) g Mg ;

                        =  19.444 ;

                   →  Round this number to 2 (two) significant figures;  since there are 2 (two) significant figure in our given amount of Mg — " 0.80 mol" ;

                   →  19 g ;  which is our answer.

Hope this helps!

  Best wishes to you!

answer

fusion: the energy source of stars. the energy released from the collapse of the gas into a protostar causes the center of the protostar to become extremely hot. when the core is hot enough, nuclear fusion commences. fusion is the process where two hydrogen atoms combine to form a helium atom, releasing energy.

hope it