to The maximum contaminant level of lead (Pb) in drinking water as set by the the Environmental Protection Agency (EPA) is 0.000015 g L-¹. Express this concentration in parts per million (ppm). Assume the density of water is 1.00 g/mL. Macmillan Learning concentration: ppm

Q: When chemical A and chemical B are mixed together, and endothermic reaction below occurs:…

A: Firat we need to calculate the heat of reaction. Then we will calculate moles of each reactant and…

Q: 1. Name these compounds: a) EOH EOK* b) Br Br d) Br- Br- TOCH₂CH₂CH3 NHCH(CH3)2

A:

Q: What is the Ccal (Heat capacity of the caloritemer based on the follwoing information) qcal-2092J…

A: Using conservation of heat principle, heat capacity of calorimeter can be calculated.

Q: Consider the insoluble compound copper(II) hydroxide, Cu(OH)2. The copper (II) ion also forms a…

A: From the standard table  Ksp value of Cu(OH)2 = 1.6 × 10-19

Q: 1. At an altitude of 150 km, the pressure is about 2.7 x 10-⁹ bar and T≈ 500 K. (a) Assuming for…

A: The explanation is given below-

Q: Calculate the pH of the following solution when the 2 reagents are mixed: 15.00mL of 0.550M KOH…

A: 15.00 mL of 0.550 M KOH are mixed with 50.00 mL of 0.225 M HF .We have to calculate the pH of the…

Q: ment Score: n 5 of 26 0% How many grams of dextrose are needed to make 745 mL of a 16.0% (w/v)…

A: Given  =   Volume of dextrose solution = 745 ml W/v% = 16 %  Mass of dextrose --->  ?

Q: A solution contains 8.38×10-³ M potassium hydroxide and 1.36×10-² M ammonium carbonate. Solid…

A: From standard table we need the values of the following: Ksp values of MgCO3 = 4 × 10-5 Ksp values…

Q: If a 40.0 mL solution of 0.35 mol/L ethanoic acid is titrated with standardized 0.45 mol/L NaOH.…

A:

Q: When 22.0 mL of a 6.20 x 10-4 M aluminum chloride solution is combined with 22.0 mL of a 9.73 x 10-4…

A:

Q: 11. One loss mechanism for ozone in the atmosphere is the reaction with the HO₂. radical: HO₂ (g) +…

A:

Q: Study the scenario and the image. Adam wants to cover silver metal with copper. COPPER BAR BATTERY…

A: Electroplating is a process that create a metal coating on a solid substrate through the reduction…

Q: What is the most likely product of the following reaction? (Don't show hydrogen atoms on your…

A: Alkenes and alkynes can be reduced into alkanes by the reaction with hydrogen in the presence of Ni,…

Q: Molecule C₂H4 C₂H₂ Molecular Geometries of Covalent Molecules: Lewis Structures and the VSEPR Model…

A:

Q: How many milliliters of a 0.900% (m/v) normal saline solution can be prepared from 2.00 g of sodium…

A: 0.900 % (m/v) means that 0.900 g of NaCl is present in 100 mL of the normal saline solution.

Q: Which of the following compounds is a secondary alcohol? O CH3 -CH-O-CH3 C H3 0 CH3-O-H O CH3 -…

A:

Q: When 12.0 mL of a 3.44 x 10-4 M ammonium sulfide solution is combined with 15.0 mL of a 6.15 x 10-4…

A: We will calculate Q first , then compare with K.

Q: What is (are) the product(s) of the following reaction? (CH,CH2),NH mild acid heat N(CHCH₂)2 I…

A:

Q: Express each of these concentrations in parts per million (ppm). 3.7 milligrams per kilogram of…

A: 1 ppm equals to 1 mg of solute per Kg of solution.

Q: Determine the pH of a solution with [OH-] = 1.43 × 10-6 M.  Your answer should contain 3 decimal…

A: We will first calculate the pOH. pOH=-log[OH-] And we will convert pOH to pH pH+pOH=14pH=14-pOH

Q: The figure below illustrates the spontaneous arrangement of five water molecules around an unknown…

A: Option A is correct answer The particle must be positively charged.

Q: A Moving to another question will save this response. Question 14 All of the natural unsaturated…

A: Fatty acids are the building blocks of the fat in our bodies and in the food we eat. During…

Q: Which of the following is most likely to undergo an E2 reaction in acetone solvent? Br Br Cl C. TOH…

A:

Q: 2 FeCl3(aq) + 3 Zn(s) → 3 ZnCl₂(aq) + 2 Fe(s) Calculate the mass of zinc chloride produced when…

A:

Q: Question 6 This gives us 7 Calories/gram O protein O carbohydrates O none of the other answers are…

A: Few questions based general chemistry. Based on the calories of energy release, fertilizer…

Q: Suppose you place equal amounts of 70.0°C and 20.0°C water next to each other in an insulated box…

A: Specific heat is defined as the quantity of heat required to raise the temperature of one gram of a…

Q: An analytical chemist weighs out 0.311 g of an unknown diprotic acid into a 250 mL volumetric flask…

A:

Q: The equilibrium concentration of hydroxide ion in a saturated magnesium hydroxide solution is that…

A:

Q: Home Work: Calculate the concentration of potassium ion in grams per litter after mixing 100 mL of…

A: Given, For KCl solution: Concentration of KCl solution = 0.250 M = 0.250 mol/L Volume of KCl…

Q: Draw Nh4+ Lewis structure

A: The lewis structure for the Above molecule is given below:

Q: At 298 K, the following reaction occurs 2 Fe³+ (aq) + Hg₂²+ (aq) = 2 Fe²+ (aq) + 2 Hg²+ (aq) a. What…

A:

Q: During the industrial synthesis of methanol (CH3OH), carbon monoxide (CO) reacts with hydrogen gas.…

A: The industrial synthesis of methanol, CH3OH can be carried out from carbon monoxide, CO and hydrogen…

Q: Find the rate law and the intergrated rate law (with the initial concentration of A as 70mol/L and X…

A: A + X = B + X As above reaction is the catalytic…

Q: Find a substitute household product that are more safer that can't cause indoor air pollution of…

A: *Substitute of air freshener is Fragrant House Plants.  Natural Candles. *substitute of candles is…

Q: A sample of gas contains 0.1800 mol of H₂(g) and 0.1800 mol of O₂(g) and occupies a volume of 15.8…

A: To solve this question, we need to use the Avogadro's law in which temperature and pressure remains…

Q: Zinc reacts with hydrochloric acid to produce hydrogen gas (as shown by the following equation). If…

A: In the given question,  Gas produced is hydrogen gas.  Volume of hydrogen gas = 47.4 mL = 47.4×10-3…

Q: III. Place the following molecules in order of increasing CN bond length: HCN, NHCH2, NH,CH3

A: Criteria to find the order of CN bond length: The compound in which there is a triple bond between C…

Q: ОН 1 ܘܟ 2

A:

Q: a. What is the crystal structure for MrDa? What is the theoretical density of a MrDa crystal,…

A: Ionic radius of cation Mr, rC = 110 x 10-3 nm Ionic radius of anion Da, rA = 180 x 10-3 nm The ratio…

Q: How do you find the net ionic equation of a solution NaC2H3O2. Is it a Ka or Kb equation?

A: In this question, we have to write the net ionic equation of a solution NaC2H3O2.  Is it a Ka or Kb…

Q: Which of the following is the most stable chair conformation of the following cyclohexane? A. B. Et…

A:

Q: 1. What is the major organic product obtained from the following reaction? C 0-1Bu 2 a. 1 b. 2 c. 3…

A: Substitution v/s elimination:  If a good nucleophile is present then substitution takes place If a…

Q: identify the peaks in the ir spectra

A: Infrared spectroscopy deals with the study of interaction of  compounds with the infrared region…

Q: Using the diagram below, answer the ff. questions. 1. What pattern of curved arrow pushing is the…

A:

Q: b) NH₂ CI ??? mo HN.

A: Given in following question a reaction what a correct reagent use this conversion

Q: What volume of H2 at a pressure of 745 torr and a temperature of 20 *C can be prepared from the…

A:

Q: Tamiflu HN NH₂ 2. Identify the geometry relative to each atom that is attached to 2 or more atoms.…

A: You have to remember that in the given structure, carbon-carbon bonds are shown like this At every…

Q: The pH of an aqueous solution of 0.559 M formic acid, (Ka(HCOOH) = 1.80 × 10-¹) is Submit Answer…

A: For a weal acid like formic acid the dissociation is weak , and in the water it dissociate to give…

Q: Draw the major organic product of each reaction. Indicate the stereochemistry at the stereogenic…

A: In SN2 reaction we get inverted product.. Since OH- not a good leaving group so we made it good…

Q: Li & H₂C-C CH3 2. H3O* 1.

A: In this question, we will draw the structure of the major organic product.  In this reaction,…