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).(As). Therefore, prior to starting construction, the group decides to measure the current level of arsenic in the lake.
If a 13.9 cm313.9 cm3 sample of lake water is found to have 166.7 ng As,166.7 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?1.00 g/cm3?
concentration: ppb
One of the volunteers suggests hiring an on‑site water treatment company to remove the arsenic from the lake. The company claims their process takes 2.07 days2.07 days to remove 36.40 kg36.40 kg of arsenic from a water source.
Calculate the total mass, in kilograms, of arsenic in the lake that the company will have to remove if the total volume of water in the lake is 0.410 km3.0.410 km3.
total mass: kg
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?
number of years:
Suppose a group of volunteers is planning to build a park near a local lake. The...
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. If a 13.9 cm3 sample of lake water is found to have 165.1 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the lake...
Suppose a group of volunteers is planning on building 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 13.9 cm3 sample of lake water is found to have 163.9 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the...
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. 1.) If a 12.5 cm3 sample of lake water is found to have 173.3 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the...
Suppose a group of volunteers is planning on building a park near a local lake. The lake is known to contain low levels of arsenic (As).? Suppose a group of volunteers is planning on building 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 10.3 cm3 sample of lake water is...
Question 36 of 38 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. If a 14.9 cm2 sample of lake water is found to have 178.9 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the...
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. If a 11.7 cm3 sample of lake water is found to have 170.3 ng As, what is the concentration of arsenic in the sample in parts per billion (ppb), assuming that the density of the lake...