Chemistry
Chemistry, 03.03.2020 22:34, witchhunt666

Suppose a group of volunteers is planning to build a park near a local lake. The lake is known to contain low levels of arsenic (As). Therefore, prior to starting construction, the group decides to measure the current level of arsenic in the lake. A) If a 15.7 cm3 sample of lake water is found to have 164.5 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the lake water is 1.00 g/cm3?
B) Calculate the total mass (in kg) of arsenic in the lake that the company will have to remove if the total volume of water in the lake is 0.710 km3?
C) Based on the company\'s claim and the concentration of arsenic in the lake, how many years will it take to remove all of the arsenic from the lake, assuming that there are always 365 days in a year?

answer
Answers: 1

Other questions on the subject: Chemistry

image
Chemistry, 21.06.2019 14:30, smm1106
Alculate the concentration of h3o⁺in a solution that contains 5.5 × 10-5m oh⁻at 25°c. identify the solution as acidic, basic, or neutral. a) 1.8 × 10-10m, basicb) 1.8 × 10-10m, acidicc) 5.5 × 10-10m, neutrald) 9.2 × 10-1m, acidice) 9.2 × 10-1m, basic
Answers: 1
image
Chemistry, 22.06.2019 04:20, lindseysmith9522
Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from
Answers: 1
image
Chemistry, 22.06.2019 07:20, camillexv2668
2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here
Answers: 1
image
Chemistry, 22.06.2019 18:00, faithabossard
Which three statements represent the benefits of performing experiments using computer simulations?
Answers: 3
Do you know the correct answer?
Suppose a group of volunteers is planning to build a park near a local lake. The lake is known to co...

Questions in other subjects: