In the chemical stockroom, you come across a bottle labelled "0.10 M strontium bromide". It seems to contain about 280 mL of solution (treat this volume as two SF's). How many moles of bromide ion are contained in the solution in the bottle?

Q: A sample of seawater from a tidal estuary was found to contain a concentration of 889 mg of chloride…

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Q: grams of barium hydroxide

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 671 mg of chloride…

A: Given : Mass of chloride ion = 671 mg = 0.671 g…

Q: How many grams of NaOH are there in 125 mL of a 0.221 M NaOH solution?

A: NaOH molarity = 0.221 M  Volume given = 125 ml no. of moles(n) = molarity ×Vml1000  Substitute the…

Q: what volume (in L) of a 2.84 M sodium chloride solution contains 6.84 moles of sodium and chloride…

A: Given molarity of NaCl = 2.84 M moles of ions = 6.84 moles

Q: Question attached

A: Sample of sea water contain concentration of 687mg of chloride ion per kg of sea water Density of…

Q: a laboratory worker wants to prepare 250mL of 0.150M solution of Ca(NO3)2. what mass of calcium…

A: Given: Volume of Ca(NO3)2 = 250 mL = 0.250 L Concentration of Ca(NO3)2  = 0.150 M Molar mass of…

Q: Silver nitrate, AgNO 3, reacts with sodium chloride as indicated by the following equation. What…

A: Given :-  AgNO3 + NaCl → AgCl + NaNO3  Volume of AgNO3 solution = 200. mL  Molarity of AgNO3…

Q: What is the molarity of an aqueous solution prepared by adding 36.5 g of barium chloride to enough…

A: Molarity is defined as total number of moles of solute present in 1000 ml of solution Molarity =…

Q: A laboratory assistant needs to prepare 300. mL of 0.185 M CaCl2 solution. How many grams of calcium…

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Q: Calculate the concentration of an aqueous solution with a volume of 350 mL in which 10.5 g of…

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Q: If there are 0.10 kg of sodium hydroxide (NaOH) in a liter of solution, what is the molarity of the…

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Q: If a student wants to make 205.0 mL of a 1.12M stock solution of SrCl 2, how many grams of solid,…

A: Given that : The volume of stock solution = 205.0 mL Molarity of stock solution = 1.12 M We have to…

Q: How many moles and numbers of ions of each type are present in the following aqueous solution? 71.8…

A: Magnesium chloride is highly soluble in water and thus it exists in solution as-   Therefore, 1…

Q: If 35.3 mL of a 0.288 M hydrochloric acid solution is needed to neutralize a solution of potassium…

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 567 mg of chloride…

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: a)How many moles of acetic acid are in 100 mL of vinegar? What is the molarity of acetic acid in…

A: Given:Mass of acetic acid= 5g Volume of solution =100 mL

Q: The concentration of urea in a solution prepared by dissolving 16 g of urea in 25 g of H2O is…

A: Given that, Mass of urea (solute) = 16 g Mass of water 9solvent) = 25 g Mass of solution = 16 g + 25…

Q: In the laboratory you dissolve 25.0 g of calcium iodide in a volumetric flask and add water to a…

A: Mass of Calcium iodide, CaI2 = 25.0 g Molar mass of CaI2 = 293.887 g/mol Calculation of no. of mol…

Q: molarity

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Q: How many grams of sodium dichromate, Na2 Cr2 O7, should be added to a 100.0-mL volumetric flask to…

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Q: How many grams of solute are present in 565 mL of 0.670 M KBr? mass of solute: TOOLS x10

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Q: This question has two parts: A student is trying to prepare 500. mL of 6.0 M sodium hydroxide, NaOH,…

A: molarity =w/M ×1000/v in ml W=weight of solute M=molar mass of solute   NaoH molar mass 40 g /mol

Q: A laboratory assistant needs to prepare 345 mL of 0.180 M CaCl2 solution. How many grams of calcium…

A: Given : concentration of CaCl2 = 0.180 M And volume of solution = 345 mL = 0.345 L…

Q: Concentrated phosphoric acid is 90% H;PO, by mass and the remaining mass is water. The molarity of…

A: a) Assuming we have 100 mL of the H3PO4 solution  hence moles of acetic acid = concentration X…

Q: 1) KOH and NaOH are dissolved in water to form a 2.48 molar solution. If 42.9 g of NaOH are used and…

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

Q: 4. The density of 20.0% NaOH (by weight) is 1.22 g/mL. What is the molarity of 20% NaOH?

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Q: A student wants to prepare 1.00 L of a 1.00-M solution of NaOH (molar mass = 40.00 g/mol). If solid…

A: 1) Mass of NaOH = m MOlar mass of NaOH = 40 g/mol The volume of NaOH solution = 1.00 L Molarity of…

Q: A particular solution of hydrochloric acid is 3.0 M. How many moles of hydrochloric acid are present…

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Q: Concentrated nitric acid is 70.4% HNO 3 by mass and has a density of 1.42 g/mL. What is the molarity…

A: Molarity: It is the no. of the moles of the solute present in the one litre of the solution.

Q: A sample of seawater from a tidal estuary was found to contain a concentration of 597 mg of chloride…

A: Molarity is defined as the number of moles of solute dissolved per liter of the solution. Molarity,…

Q: A sample of seawater from a tidal estuary was found to contain a concentration of 741 mg of chloride…

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 711 mg of chloride…

A: Given values-> Weight of chloride ion = 711mg = 711 × 10^-3gram Density = 1.035gm/mole

Q: Household ammonia used for cleaning contains about 10 g (two significant figures) of NH3 in 100 mL…

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 527 mg of chloride…

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 825 mg of chloride…

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Q: What mass of oxalic acid dihydate, H2C2O4•2H2O, is needed to make a 0.498 M solution of oxalic acid…

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Q: How many moles and numbers of ions of each type are present in the following aqueous solution? 51.7…

A: Given : Concentration of MgCl2 = 1.35 M And volume of MgCl2 solution = 51.7 mL = 0.0517 L…

Q: If you have a 4.32 M solution of magnesium sulfide (MgS), how many moles of solute are in 1.00 L of…

A: Introduction The moles of any particular solute can be easily calculated if we are provided the…

Q: What mass of oxalic acid dihydate, H2C2O4•2H2O, is needed to make a 0.498 M solution of oxalic acid…

A: Molarity of a solution is defined as the number of moles of solute present in one liter solution. It…

Q: ethylene glycol

A: Molarity is defined as moles of solute to the volume of solution. Molarity calculation formula:

Q: Concentrated aqueous hydrochloric acid (HC) is 38% HCl by mass. Its concentration is 12,0 M. What…

A: The molarity of the solution is equal to the number of moles of solute dissolved per liter of…

Q: A student pipets 12 mL of a lithium sulfate solution into a 163 mL volumetric flask and dilutes to…

A: With datas given Using dilution formula , the concentration of NaNO3 in the original solution is…

Q: You need to make an aqueous solution of 0.196 M iron(III) sulfate for an experiment in the lab,…

A: First of all, we will calculate the number of moles of iron(III) sulfate using molarity equation.…

Q: 0.41g of an unknown acid, HA, titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH…

A: Given data,   28.10 mL = 0.02810 L of NaOH   Molarity of NaOH =0.1055 M

Q: How many moles of KBr are there in 27.3 mL of 0.150 M KBr?

A: A question based on the concept of number of moles.

Q: Hydrochloric acid, HCl, and calcium hydroxide, Ca(OH)2, react with each other in a neutralization…

A: The reaction taking place will be  Ca(OH)2 + 2 HCl ------> CaCl2 + 2 H2O

Q: Calcium hypochlorite [Ca(OCI)2l is an effective disinfectant for clothing and bedding. If a solution…

A: From given With the given mass and its molar mass , molarity is calculated as follows

Q: You are a researcher working in a famous molecular biology lab. You will be doing a very important…

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Q: A sample of seawater from a tidal estuary was found to contain a concentration of 559 mg of chloride…

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