the concentration of carbon monoxide in an urban apartment is 48.0 ug/m^3. what mass of carbon monoxide in grams is present in a room measuring 9.0ft*14.5ft*18.8ft
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the concentration of carbon monoxide in an urban apartment is 48.0 ug/m^3. what mass of carbon monoxide in grams is present in a room measuring 9.0ft*14.5ft*18.8ft
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- Assume that the radius of Earth is 6400 km, the crust is 50. km thick, the density of the crust is 3.5 g/cm3, and 25.7% of the crust is silicon by mass. Calculate the total mass of silicon in the crust of Earth.A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 69.32 g.L The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 5.02 g⋅L¯¹. Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Be sure your answer has the correct number of significant digits.A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 25.·gL−1 . The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 4.2·gL−1 . Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Round each of your answers to 2 significant digits.
- A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 11.10 g.L-¹. The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 4.30 g⋅L¯¹. Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Be sure your answer has the correct number of significant digits.Density of an aqueous solution of nitric acid is 1.43 g/mL. If this solutioin contained 36.0% nitric acid by mass, what volume of solution would be needed to supply 1.50 mmol of nitric acid?Chlor-alkali plants electrolyze NaCl to produce the commodity chemicals caustic soda and chlorine gas. Industrial waste effluent released into waterways from these plants can contain trace amounts of mercury. Legally, the effluent can contain up to 2.50 x 10-9 mol/L of mercury. Determine the minimum volume of water, in megalitres (ML), that must be added to a 1.14 g sample of mercury to dilute the effluent to acceptable levels. Record only your numerical answer with the correct number of significant digits. You do not need to include units as the units appear for you beside the answer box already.
- 51. A concentrated perchloric acid solution is 65.8% HClO4 by mass and its density is 1.68 g mL−1. What volume (in litres) of the concentrated perchloric acid solution is needed to make 1.81 L of 2.62 mol L−1 HClO4(aq)?Chlor-alkali plants electrolyze NaCl to produce the commodity chemicals caustic soda and chlorine gas. Industrial waste effluent released into waterways from these plants can contain trace amounts of mercury. Legally, the effluent can contain up to 2.50 x 10-9 mol/L of mercury. Determine the minimum volume of water, in megalitres (ML), that must be added to a 1.13 g sample of mercury to dilute the effluent to acceptable levels.(Do not show your work in the space provided; record only your final answer with the correct number of significant digits and the proper units.)One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is by titrating a sample of silver nitrate solution. Any chloride anions in solution will combine with the silver cations to produce bright white silver chloride precipitate. Suppose an EPA chemist tests a 200. mL sample of groundwater known to be contaminated with iron(III) chloride, which would react with silver nitrate solution like this: FeCl3(aq) + 3 AgNO3(aq) 3 AgCl(s) + Fe(NO3),(a9) The chemist adds 56.0 mM silver nitrate solution to the sample until silver chloride stops forming. She then washes, dries, and weighs the precipitate. She finds she has collected 2.8 mg of silver chloride. Calculate the concentration of iron(III) chloride contaminant in the original groundwater sample. Be sure your answer has the correct number of significant digits. mg L Submit Assignment Continue Accessibility Privacy O 2020 McGraw-Hill Education. All Rights Reserved. Terms of Use 888 %23 5 6 2 3 E R. G…
- The concentration of carbon monoxide in an urban apartmentis 48 mg>m3. What mass of carbon monoxide in gramsis present in a room measuring 10.6 ft * 14.8 ft * 20.5 ft?What volume of 95.0% alcohol by weight (density: 0.809g/cm^3) must be used to prepare150 cm^3 of 30.0% alcohol by weight (density: 0.957g/cm^3)The legal limit for chromium in drinking water is 0.10 ppm. What is the maximum permissible mass of chromium (in \mu gμg) in exactly 1.0 cup (8.0 fl. oz.) of drinking water? Assume the density of drinking water is 1.00 g/mL. (1 fl. oz. = 29.57 mL)(Express your answer with two significant digits.)
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