Question #586b5

1 Answer
Aug 6, 2017

Here's what I get.

For convenient reference, let's list the relative masses of these species.

#M_text(r):14.01color(white)(m)17.03color(white)(m)46.01#
#color(white)(mmm)"N"color(white)(mml)"NH"_3color(white)(ml)"NO"_2#

Ammonia

(a) mg #"N"# to mg #"NH"_3#

#"9 mg N" × "17.03 mg NH"_3/(14.01 "mg N") = "11 mg NH"_3#

#"9 mg N/L" = "11 mg NH"_3"/L"#

(b) mg #"N"# to mg #"NO"_2#

#"9 mg N" × "46.01 mg NO"_2/(14.01 "mg N") = "30 mg NO"_2#

#"9 mg N/L" = "30 mg NO"_2"/L"#

Nitrate

(a) mg #"N"# to mg #"NH"_3#

#"0.5 mg N" × "17.03 mg NH"_3/(14.01 "mg N") = "0.6 mg NH"_3#

#"0.5 mg N/L" = "0.6 mg NH"_3"/L"#

(b) mg #"N"# to mg #"NO"_2#

#"0.5 mg N" × "46.01 mg NO"_2/(14.01 "mg N") = "1.6 mg NO"_2#

#"0.5 mg N/L" = "1.6 mg NO"_2"/L"#