12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm (1.00 ppm = 1.00 × 10° kg/L). The concentration of nitrates in Morro Bay Estuary was measured this morning at 0.6411 mg/L. Does this meet EPA standards? Show your calculations and explain. -6 Name

12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm (1.00 ppm = 1.00 × 10° kg/L). The concentration of nitrates in Morro Bay Estuary was measured this morning at 0.6411 mg/L. Does this meet EPA standards? Show your calculations and explain. -6 Name

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Related questions

Q: Dissolve 1000 g of Potassium Iodide in 650 mL hot purified water using a 2 L capacity beaker. Allow…

A: Mass of Potassium iodide added = 1000 g Volume of Potassium iodide solution = 1 L = 1000 mL For…

Q: Calculate the concentration in ppm of Cd in a 2.00 mL sample which has been shown to contain 16.4 ug…

A: Solution stoichiometry involves the calculation of the concentration of solutions in the given…

Q: NetID: 5. Aluminum hydroxide is added to pure water to give a saturated solution. The aluminum ion…

Q: Part 1 An aqueous solution is prepared in which 0.00192 mol Ni(NO3)2 and 0.353 mol NH3 are dissolved…

A: Given: Moles of Ni(NO3)2 = 0.00192 mol Moles of NH3 = 0.353 mol Volume = 1 L

Q: The EPA has set the MCL for the concentration of cadmium as 5.05.0 ppb. What is the concentration of…

Q: A chemist tries to dissolve a solid ionic compound called "X" in water at 25°C. He adds 100 mL of…

A: Solution is a homogenous mixture of solute and solvent. Solute is the component present in lesser…

Q: The calibration curve was generated using known concentrations of five solutions of a newly…

A: The amount of a substance dissolved in a specified volume of the solvent produces a solution of a…

Q: The concentration of Br" in a sample of seawater is 8.3 x 104 M. If a liter of seawater has a mass…

A: ppm of Bromine ions in sea water is equal to grams of Bromine ions in 1000000 grams of sea water.

Q: Concentrated" barium hydroxide is an aqueous solution that is 50% by mass and used as a reagent. The…

A: The objective of the question is to find the mass of Ba(OH)2 contained in 2 mL of concentrated…

Q: Assume that a water sample tested has 150 mg/L total hardness. The Mg hardness is 50 mg/L,Ca…

A: Total Hardness = Hardness due to Magnesium + Hardness due to Calcium OR Total Hardness = Temporary…

Q: Suppose you performed a similar experiment using an unknown carbonate sample. The pressure and…

A: The answer to the following question is-

Q: A 134-mg sample of Na2CO3 is dissolved in H2O to give 1.45 L of solution. What is the concentration…

A: we have to calculate the concentration of Na+ in ppm dioctyl phthalate in ppb

Q: For the following show the calculation for both trails b) Volume of NaOH c) moles NaOH d) moles of…

A: Dear student, As you have asked multiple subpart questions but according to guidelines we will…

Q: 2H₂(g) + O₂(g) + 2H₂O (g) + energy (heat) 3. Pressure (Recall Gizmo activity: Equilibrium and…

A: For the given equilibrium system 2H2(g) + O2(g) ---------> 2H2O(g) + Heat energy i.e. system is…

Q: Dissolve a spatula-tip of lead(II) nitrate in 5 mL tap water in a test tube. In another test tube,…

A: Precipitation reactions: These are the type of reactions when two soluble solutions after mixing…

Q: Consider the following chemical reaction: N2O3 (g) + H2O (l) ------------------> HNO3 (aq) 220…

Q: A 104-mg sample of Na2CO3 is dissolved in H2O to give 2.45 L of solution. What is the concentration…

Q: Express the concentration of a 0.0240 M aqueous solution of fluoride, F¯, in mass percentage and in…

A: Use the formulae given below. mass percentage =mass of the F-mass of the solution×100 ppm =mass of…

Q: A 500 mL sample of waste water contains 42.65 ug of mercury, Hg. If the density of the sample is…

Q: When 624 grams of PbCl2(s) are placed in 2 L of water, what mass (in grams) of PbCl2 will dissolve?…

A: PbCl2 will dissolve in water as Pb2+ and 2Cl-. So the solubility product would be,…

Q: Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution…

A: Given, 537g/L NaOH

Q: The concentration of Ca2+ in CaCl2 solution is 42 mEq/L. What is a molar concentration (mmol/L, mM)…

A: Given: Concentration of the solution = 42 mEq/L Or concentration of the solution = 42 mN

Q: Predict what will be observed in each experiment below. predicted observation (choose one)…

A: Given experiment 1: A pair of 100 mL samples of water are taken from a well bored into a large…

Q: 14. Consider the following chemical reaction: N2O3 (g) + H2O (l) ------------------> HNO3 (aq)…

A: Molarity of a solution is defined as the number of moles of the solute upon the volume of the…

Q: Buret contains NaOH solution *Sodium hydroxide solution: To 1 part reagent grade NAOH add 1 part…

A: The reaction that takes place between the equimolar concentration of acid and base is called a…

Q: Some chemical compounds are listed in the first column of the table below. Each compound is soluble…

Q: A 15 meter by 12 meter pool of water has a depth of 3.0 meters. What mass of silver ion is present…

A: Parts per million (PPM) is unit of measurement used in expressing very dilute concentration level of…

Q: "Question 6: List below are solubility versus temperature data for an organic substance A dissolved…

A: We are given solubility data and have to tell the solubility at different temperatures.

Q: Monique has a pot that contains 7 liters of brine (salt water) at a concentration of 110 g/L. She…

A: The number of moles of solute on per liter of solution is known as concentration.

Q: 269 mL of a 0.445 M NaCl is added to a 1.32 L volumetric flask and the flask is filled with water.…

Q: 10g of sodium nitrate is dissolved in a 90 ml of H2O (density of H2O=

A: Given, Mass of Sodium nitrate(NaNO3)=10 g Molar mass(MM) of NaNO3 = 85g Moles of NaNO3 = mass/MM…

Q: Seawater contains an average of 1.08 x 103 ppm of Na* and 270 ppm of SO42. Calculate the molar…

A: Given, Concentration of Na+ ion = 1.08 * 103 ppm Concentration of SO42- ion = 270 ppm Average…

Q: San Pellegrino mineral water is 208 mg of calcium per liter according to the FDA. A. What is the…

A: The presence of calcium and magnesium in water results in the hardness of water. The concentration…

Q: A bubble of air escaping from a diver's mask rises from a depth of 108 ft to the surface where the…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: If you have a stock solution of Janus Green B dye that is at a concentration of 1 gram/liter, what…

Q: How many moles of solid sodium fluoride should be added to 5.0 L of a saturated solution of barium…

Q: maize. In 2017, eggs in Europe were found to have concentrations of fipronil above 1.14x10 What is…

A: Ppb= parts per billion 1M= 109ppb 1.14×10-8 molar means 1.14×10-8mole of Solute is present. Mass of…

Q: In New Zealand, the legal blood alcohol limit is 400 ug of alcohol per 1 L of breath. What is this…

A: Ppb is an unit of concentration, where it is denoted as Ppb = (mass of solute in gm / volume of…

Q: What is the percent-by-mass concentration of KOH in a solution that is prepared by adding 18.0 g of…

A: Given, Mass of solute=18g Mass of solvent =95g Mass of solution= mass of solute+ Mass of solvent…

Q: Which chemical or functional group helps a molecule dissolve in water? NH2 (amino group) fats…

A: Water is a polar solvent and it can dissolve an ionic or polar covalent compound.

Q: A 1.0 mL sample of seawater is determined to contain 2.5 × 10–14 moles of dissolved gold. The setup…

Q: Hydrochloric acid (11.4 mL of 0.230 M) is added to 279.0 mL of 0.0720 M Ba (OH), solution. What is…

A: Using stoichiometric ratio of balanced reaction we can calculate how many moles of reactant reacts…

Q: On a clear day at sea level, with a temperature of 25 °C the partial pressure of N2 in air is 0.78…

Q: In Part C of the experiment, you added a 6.0 NaOH solution to the aqueous solution of NaCl. Did the…

A: When NaCl is dissolved in water , it undergoes dissociation to form sodium and chloride ions.…

Q: tion 8 When carbonating fruit, the initial partial pressure of CO2 is 6.56 x 104 atm, resulting in a…

Q: Calculate the volume of water that must be added to a 10 mL sample of 0.5 M NAOH sc fold dilution. O…

A: Given, Initial volume = 10 mL Molarity = 0.5 M

Q: Prepare 500mL of 3M HCl. You have a 2.0L bottle labeled "11.6M HCl". The concentration of the HCl is…

A: Given : Concentration of stock HCl solution = 11.6 M Concentration of final HCl solution required =…

Q: QUESTION 15 →2S0:(g). The S° for each species What is AS for the following reaction? 2SO2(g) + O:(g)…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Question

12. The Environmental Protection Agency limit for nitrates in drinking water samples is 10.0 ppm
(1.00 ppm = 1.00 × 10° kg/L). The concentration of nitrates in Morro Bay Estuary was measured
this morning at 0.6411 mg/L. Does this meet EPA standards? Show your calculations and explain.
-6
Name

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Similar questions

A high school chemistry teacher is preparing a solution by dissolving, 17.5mL of ethanol (ETOH) in H20 to make 145mL of total solution. The molar mass of Ethanol is 46.07 g/mole, and the density of EtOH is 0.789 g/mL. Determine the concentration (in M) of the ethanol in this solution?
A bubble of air escaping from a diver’s mask rises from a depth of 124 ft to the surface where the pressure is 1.00 atm. Initially, the bubble has a volume of 10.0 mL. Assuming none of the air dissolves in the water, how many times larger is the bubble just as it reaches the surface? Use this data:1. The density of seawater is approximately 1.025 g mL-12. The density of mercury is 13.6 g mL-1 Answer: ____times larger
Lab 12: Solutions Oxnard College Predict the concentration if the solution is diluted to a volume of 1 liter. Show the calculation of this concentration, include units in all your work. After you make the calculation: Add water with the valve in the upper left until there is 1 liter of water in the beaker. 3. What is the concentration?. 236 ho/L-Does this match your calculation? Yes or No 4. Predict the concentration if the solution is now concentrated (by using evaporation) to a volume of .75 liters (1/2 way between .5 liters and 1 liter). Show the calculation of this concentration, include units in all your work. After you make the calculation: Evaporate water with Evaporation Slider Bar at the bottom until there is .75 liter of solution in the beaker. 5. What is the concentration? Does this match your calculation? Yes or No 6. From the concentration & Volume calculate the number of moles of solute in the solution. Show your calculation with units. 7. How does the # moles of solute…
(SHOW CALCULATIONS) The Environmental Protection Agency sets limits for fluoride in drinking water at 4.0 ppm by mass. Find this concentration in Molarity. (molar mass of fluoride = 18.998 g/mol; assume density = 1.00 g/mL).
1. A 1.2000 g sample of (NH4)2Ce(NO3)6 (548.23 g/mol) is dissolved in water and diluted to 100.0 mL. Calculate the molar analytical concentration of the (NH4)2Ce(NO3), solution Calculate the molarity of NO3 Calculate the pCe Calculate the ppm NH4+ (18.0385 g/mol) in the solution
Phosphate that is added to our drinking water forms a protective layer of lead phosphate on the inside of the pipes that distribute that water to our homes. The EPA maximum limit for lead in drinking water is 50ppb. Calculate the concentration of phosphate needed to keep the lead concentration below 39ppb. The Ksp of lead phosphate Pb3(PO4)2 is 1.6×10-32. Report your answer in ppb to the nearest whole number. Phosphate is 94.97 g/mole and lead is 207.2 g/mole.
1. A solution is made by adding 255g of sodium fluoride, NaF to 1200 mL of water at 72°C, the density of water at 72°C is 1.0 g/mL: a) Find the mass percent of the NaF in solution b) Find the molarity c) Find the molality 2. 600 mL of a solution of 1.5 M concentration of Calcium nitrate, Ca(NO3)2 would contain how many grams of calcium nitrate?
5. You have 97.0 mL of a 0.500 M stock solution of HCl that must be diluted to 0.200 M. How much water (in mL) should be added? 6. Express the concentration of a 0.120 M solution of NaF in mass percentage (w/w) and in parts per million (PPM). Assume the density of the solution is 1.00 g/mL. 7. Assuming 100% dissociation, calculate the freezing point and boiling point (in °C) of a solution with 98.4 g of AgNO3 in 1.00 kg of water. 8. Calculate the osmolarity of these solutions. Assume density of the solution is 1.00 g/mL. (a) 3.80 M MgCl2 solution Osmolarity = (b) 4.40% w/w glucose (C6H12O6) solution Osmolarity =
150 mCi of D2O is injected in your patient. 10% of D2O is excreted. The concentration of D2O in a plasma sample is found to be 0.4 mCi/100 ml. What is your patient' s Total Body Water in L?
Why do Sedimentation and filtration is important in water treatment? Is a period of time important in water purification?
A Sodium concentration in Horse Urine of more than 20 mEq of Sodium per 1 Liter of Horse Urine is considered an above normal Sodium concentration. A horse has a sodium concentration in its urine of 0.050 moles of Sodium per 1 Liter. What would the concentration of sodium in this sample of urine be in units of mEq of Sodium per 1 liter of Horse Urine?
What is the change in total dissolved nitrogen (TDN) concentration in the process & the steps to get there?