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Tentukan massa molekul relatif dari senyawa berikut: a. H 2 ​ SO 4 ​ ( A r ​ H = 1, S = 32, O = 16) b. CH 3 ​ COOH ( C = 12, H = 1, dan O = 16) c. NaOH ( Na = 23, O = 16, dan H = 1) d. BaCl ( Ba = 137, Cl = 35)

Tentukan massa molekul relatif dari senyawa berikut:

a.  ( H = 1, S = 32, O = 16)

b.  (begin mathsize 14px style italic A subscript r end style C = 12, H = 1, dan O = 16)

c. NaOH (begin mathsize 14px style italic A subscript r end style Na = 23, O = 16, dan H = 1)

d. BaCl (begin mathsize 14px style italic A subscript r end style Ba = 137, Cl = 35)

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massa molekul relatif dari adalah 98, adalah 60, adalah 40,dan adalah 207.

massa molekul relatif dari H subscript 2 S O subscript 4 spaceadalah 98, C H subscript 3 C O O H spaceadalah 60, Na O H spaceadalah 40, dan Ba Cl subscript 2 spaceadalah 207. 

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a. ( H = 1, S = 32, O = 16) b. ( C = 12, H = 1, dan O = 16) c. NaOH ( Na = 23, O = 16, dan H = 1) d. ( Ba = 137, Cl = 35) Jadi, massa molekul relatif dari adalah 98, adalah 60, adalah 40,dan adalah 207.

a. begin mathsize 14px style H subscript 2 S O subscript 4 end style (begin mathsize 14px style italic A subscript r end style H = 1, S = 32, O = 16)

table attributes columnalign right center left columnspacing 0px end attributes row cell italic M subscript r space H subscript 2 S O subscript 4 space end cell equals cell space left parenthesis 2 cross times italic A subscript r space H right parenthesis plus left parenthesis 1 cross times italic A subscript r space S right parenthesis plus left parenthesis 4 cross times italic A subscript r space O right parenthesis end cell row blank equals cell space left parenthesis 2 cross times 1 right parenthesis plus left parenthesis 1 cross times 32 right parenthesis plus left parenthesis 4 cross times 16 right parenthesis end cell row blank equals cell space 2 plus 32 plus 64 end cell row blank equals cell space 98 space end cell end table 

b. begin mathsize 14px style C H subscript 3 C O O H end style (begin mathsize 14px style italic A subscript r end style C = 12, H = 1, dan O = 16)

table attributes columnalign right center left columnspacing 0px end attributes row cell italic M subscript r space C H subscript 3 C O O H space end cell equals cell space left parenthesis 2 cross times italic A subscript r space C right parenthesis plus left parenthesis 4 cross times italic A subscript r space H right parenthesis plus left parenthesis 2 cross times italic A subscript r space O right parenthesis end cell row blank equals cell space left parenthesis 2 cross times 12 right parenthesis plus left parenthesis 4 cross times 1 right parenthesis plus left parenthesis 2 cross times 16 right parenthesis end cell row blank equals cell space 24 plus 4 plus 32 end cell row blank equals cell space 60 space end cell end table  

c. NaOH (begin mathsize 14px style italic A subscript r end style Na = 23, O = 16, dan H = 1)

table attributes columnalign right center left columnspacing 0px end attributes row cell italic M subscript r space Na O H space end cell equals cell space left parenthesis 1 cross times italic A subscript r space Na right parenthesis plus left parenthesis 1 cross times italic A subscript r space H right parenthesis plus left parenthesis 1 cross times italic A subscript r space O right parenthesis end cell row blank equals cell space left parenthesis 1 cross times 23 right parenthesis plus left parenthesis 1 cross times 1 right parenthesis plus left parenthesis 1 cross times 16 right parenthesis end cell row blank equals cell space 23 plus 1 plus 16 end cell row blank equals cell space 40 space end cell end table 

d. begin mathsize 14px style Ba Cl subscript 2 end style (begin mathsize 14px style italic A subscript r end style Ba = 137, Cl = 35)

table attributes columnalign right center left columnspacing 0px end attributes row cell italic M subscript r italic space Ba Cl subscript 2 space end cell equals cell space left parenthesis 1 cross times italic A subscript r space Ba right parenthesis plus left parenthesis 2 cross times italic A subscript r space Cl right parenthesis end cell row blank equals cell space left parenthesis 1 cross times 137 right parenthesis plus left parenthesis 2 cross times 35 right parenthesis end cell row blank equals cell space 137 plus 70 end cell row blank equals cell space 207 space end cell end table 

Jadi, massa molekul relatif dari H subscript 2 S O subscript 4 spaceadalah 98, C H subscript 3 C O O H spaceadalah 60, Na O H spaceadalah 40, dan Ba Cl subscript 2 spaceadalah 207. 

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