How many grams of Pb(NO3)2 (331.2 gimol )are needed to prepare 300 ppm (w/v) of Ph*2 (207.2 gimol) in 11. soluti on? 1. O0.137 g 2. O0.300 g 3. O0.219 g 4. O0.410 g

Q: Rank the following solutions from brightest (1) to weakest/no light (6) when the solution's…

A: Equivalent conductance is inversely proportional to the normality of the solution and  normality is…

Q: Calculate the mass in grams for pure oxygen at 1.00 atm dissolved in 3.00 L of water with a kH =…

A: Given: Volume of water = 3.00 L KH of oxygen in water at given temperature = 0.00128 M/atm. And the…

Q: What is the Molar concentration of 5000-1 ppm of Na2SO4 solution (At.w. Na=23, S=32, .O-16)

A: In this question we have to know the molarity from ppm by determining the molar mass of a substance.…

Q: 1. Explain how KCl, HBr, HCN, and C12H22O11 behave differently at the particle level when they are…

A: a) When KCl is dissolved in water, it dissociates into K+ and Cl– ions. KCl acts as a salt in water.…

Q: What is the [AsOg] for a solution labeled 0.10 M arsenic acid (H3ASO4)? [Ka1 = 6 x 103, Ka2 = 1 ×…

A:

Q: How to prepare 2 liters of 0.1 N H2SO4 solution? (H2SO4; MA = 98 g / mol; 96% and d = 1.84 kg / l)

A: Given data, Molar mass of H2SO4 is 98 g/mol. Density=1.84 kg/L and 96% by mass. For find out the…

Q: Calculate the volume of 1 M CoCl2 needed to prepare 100 mL of 0.25 M CoCl2

A: Molarity of solution 2 (M2) = 0.25 Volume of solution 2 (V2) = 100 ml Molarity of solution 1 (M1)= 1…

Q: Calculate the mass in grams for pure oxygen at 1.00 atm dissolved in 3.00 L of water with a kH =…

A: Given  pressure of gas =1.00 atm Volume of water = 3.0 L temperature = 20.0 oC. Henry constant (kH)…

Q: How many moles are there in 3.8 kg of CaCl2   Group of answer choices a)  34.24 mol b)  0.34 mol c)…

A:

Q: What mass (in grams) of Mg(N03)2 is present in 145 mL of a 0.150 M solution of Mg(NO3)2 (At wt Mg…

A: Since, Moles of Mg(NO3)2  Present = molarity of solution X Volume of solution in L Molarity of…

Q: -3 At 25.0 °C the Henry's Law constant for phosphine (PH, gas in water is 8.1 x 10 °M/atm. Calculate…

A:

Q: What is the percent concentration by mass of NaCl in a 200 g of solution that contains 0.390 mol of…

A:

Q: 0.10 M NaCl, 0.10 M NaNO3, 0.10 M NaC2H3O2      These all have the same cation, Na+. Which anion…

A: The speed at which the ions move through a gas under the influence of unit electric field is known…

Q: What is the pOH of 500 mL of solution containing 0.533 grams of Ca(OH)2 (molar mass 74.09 g/mol at…

A: pH + pOH = 14

Q: How many grams of boric acid [B(OH)3, FM 61.83] should be used to make 2.00 L of 0.050 0 M solution?

A:

Q: Part A. The molarity of a solution made by dissolving 2.5 g of KOH in 250.0 mL of water is _____ M.…

A:

Q: What are the major components in water that make hard water hard ? Ca2+&Mg2+, No3-& Mg2+, Na+&Fe3+,…

A: The major components in water that make hard water hard among these : 1) Ca2+ & Mg2+ 2) No3-…

Q: In the steam distillation of lemon grass, the mixture boils at 95.00C at 1 atm pressure. If the…

A: Here steam distillation is applicable for organic compounds which is immiscible in water. Ptotal =…

Q: Vill a ppt of PbSO4 (s) form if .6 x 104 M Pb(NO3)2 (aq) with 9.3 x Lo^² M you mix Na2SO4 (aq)?…

A: The question is based on the concept of solubility product principle.   It that states that when a…

Q: Will the following reaction take place? Explain. NaBr(aq) + F2(1)>

A: Given that : We have to identify whether or not the following reaction takes place.

Q: Partlal negative charge 8- Electrons are pulled toward oxygen. H. H 8+ Partial positive charge The…

A: Solution :     A polar molecule formed when one of the ends of the molecule has a more positive…

Q: Commercial concentrated sulfuric acid is 17.8 M. If 75.0 mL of this acid is diluted to 1.00 L, what…

A: According to the law of dilution for two sets of data of a particular solution, we can write:…

Q: Calculate the number of grams of KOH required to neutralize 22.2 mL of H3PO4 with a concentration of…

A: molarity = moles/volume of solution(in L)  so, moles = molarity × volume (in L)     number of moles…

Q: How do you prepare 250. g of 0.150 maqueous NaHCO₃?

A: Molality of a solution is equal to the number of moles of solute present in 1 kg of solvent.

Q: Calculate the quantity of lime and soda required for softening one million litre of the following…

A: Water can be hard or soft. Water became hard due to the presence of MgCO3, , MgCl2 and CaCl2. But,…

Q: km g of NA2CO3 must weigh to prepare 0.5 litre of 0.2 N solution *? Att. Wt (Na = 23, C 3D12, O =…

A: Answer:- This question is answered by using the simple concept of calculation of mass using the…

Q: How would you prepare 1.5 L of approximately 0.1 M KMnO4?

A: Given: Volume of KMnO4 = 1.5 L Concentration of KMnO4 = 0.1 M Molar mass of KMnO4 = 158.034 g/mol

Q: How many gram of H2SO4 are necessary for the preparation of 0.175dm^3 of 6.00M of H2SO4?

A: We have 0.175 dm3 as volume , Molarity as 6 M, we have to calculate the mass of the sulphuric acid…

Q: what is the osmolarity when 1.5 mole MgC12 is added to 1 liter of water? a. 1.2 Osmol b. 3 Osmol c.…

A:

Q: 0.250 g of aluminum sulfate is dissolved in enough water to make 150 mL of solution.

A: We have to find equivalents of sulfate ion

Q: 13.5 Which of the following is the best representation of a sat- urated solution? Explain your…

A: A saturated solution is a solution in which no more solute can be dissolved. But, if more amount of…

Q: Practice 10.10S O Geometry w/Dat G Sign in - Google Logins & Passwc D A https://east.cengagenow.com…

A: Here we are required to find the mole fraction of ammonia.

Q: Urea 5 g ______ Ointment base at 100 g ______ .  How can you prepare Prepare 90 g of ointment…

A:

Q: Describe how you could separate and purify compound A from a mixture of two neutral compounds (A and…

A: Fractional crystallization: It is a type of separation method that is used to separate a mixture of…

Q: Enter your answer in the provided box. Calculate the molar concentration of oxygen in water at 25°C…

A: Given-> T = 25°C = 25 + 273 = 298 K Partial pressure of O2 = 0.23 atm Henry's law constant (K) =…

Q: How many grams of NaClO are there in 50 g of this bleach?

A: The concentration of sodium hypochlorite in Household bleach is approximately 5 - 6 %.  This means…

Q: Draw a molecular level of what the water sample looks like at 90°C.

A: Given, water sample at temperature 90oC. How the molecular level exists in water at 90oC?

Q: Carbon tetrachloride, once widely used in fire extinguishers and as a dry cleaning fluid, has been…

A: Here we use the colligative property of solution which is elevation in boiling point on addition of…

Q: Concentrated ammonia contains 1.10 mil of NH3 dissolved in 2.54 mol H2O. What is the mole fraction…

A: · Number of moles of NH3 in concentrated aqueous ammonia = 1.10 mol· Number of moles of H2O in…

Q: Dr. V. is making spaghetti for dinner. He places 4.01kg of water in a pan and brings it to a boil.…

A: Given, Pressure = 1atm Kb = 0.52 oC /m Boiling point of pure water = 100oC Mass of solvent = 4.01kg…

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: What is the percent by mass of NaHCO3 in a solution containing 20.0 g of NaHCO3 dissolved in 600.0…

A: Density is the ratio of the mass of a substance per unit volume of the substance. The density of an…

Q: 2. Household bleach is one of the most commonly used disinfectants this pandemic. Its major chemical…

A: NOTE

Q: If you do Beer's law experiment with a constant wavelength of 550nm light and 100mM concentration of…

A: A multiple choice question based on absorption that is to be accomplished.

Q: What volume of a 2.00 M aqueous KOH solution would be needed to neutralize 30.00 mL of 6.00 M…

A:

Q: A- What is the approximate M and N of 13% solution of H,SO, which has a specific gravity of 1.09 ?…

A: mass percent = mass of solute *100/ mass of solution mass percent % = mass of solute *100/ mass of…

Q: If 2.25 liters of water are added to 0.132 L of a 18M K2SO4 solution, what will the molarity of the…

A: Given information is as follows:     The molarity of K2SO4 solution M1 = 18 M The volume of the…

Q: What mass of nalt (NaCI) ahould you add to 1.00 L of water in an ice cream maker to make a solution…

A: Since you have posted multiple questions, we are entited to answer the first only. Given: Volume of…

Q: Automotive antifreeze consists of 25.0 mass percent ethylene glycol, C2H6O2 (MW=62.1 g/mol), a…

A: Given: Mass percent of C2H6O2 = 25.0 %. And environment temperature = -13 oC Assuming 1 Kg of…

Environmental Pollution

Environmental pollution occurs due to some unwanted alteration in the surroundings which results in unfavorable effects on all organisms of that surrounding.