The maximum contaminant level (mcl) set by the epa of thallium in drinking water is 0.0020 mg/l . convert the mcl of thallium from milligrams per liter to parts per billion (ppb). converted mcl of thallium: ppb a farmer recently dug a new well for his property. he sends a 16.0 ml sample of the well water to the epa to be tested for the presence of thallium. what is the maximum amount of tl (in μg ) that can be present in this 16.0 ml sample based on its mcl? maximum amount of tl : μg suppose the farmer rethinks his plan and digs a new well on the other side of his property. he sends in a new 16.0 ml sample. after testing, the epa determines that the sample of water contains 0.00164 μg/ml tl . is the thallium level of the new well water safe to consume? yes not enough information no

a) C Tl = 2 ppb

b) mass Tl = 0.032 μg

c) yes, 0.00164 μg/mL < 0.02 μg/mL, then the water can be safely consumed.

Explanation:

a) C Tl =  0,002 ppm * ( 1000ppb/ppm ) = 2 ppb

b) 16mL * ( L/1000mL ) = 0.016 L

⇒ m Tl = 0,016 L * 0.002 mg/L = 3.2 E-5 mg Tl * ( 1000μg/mg ) = 0.032μg Tl

c) C Tl = 0.00164 μg/mL

∴ according to MCL for 16 mL of sample,  the maximum amount allowed is the 0.032μg Tl

⇒ the Tl concentration for 16mL of sample, would be:

⇒ C Tl = 0.032μg Tl / 16 mL = 0.02 μg Tl/mL

∴ the new sample concentration ( 0.0016 μg Tl/mL ) is less than the maximun concentration allowed by MCL ( 0.02μg Tl/mL) for that amount of sample;  then the water from that well can be safely consumed.

idk

explanation:

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.