A chemist prepares a solution of vanadium(III) bromide (VBr,) by measuring out 49. mg of VBr, into a 50. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Br anions in the chemist's solution. Be sure your answer is rounded to 2 significant digits. mol L

Q: An aqueous solution at 25°C  has a OH− concentration of 4.6 x 10^−9M. Calculate the H3O+…

A:

Q: A chemist adds  30.0mL  of a  0.00394 M calcium sulfate  CaSO4  solution to a reaction flask.…

A: We have to calculate the mass of solute added.

Q: For the following questions (Q1-Q5), consider the compound tartrazine (Yellow 5 food dye) that has a…

A: Given, 2.487 x 10-4 moles of tartrazine

Q: A chemist adds 2.00L of a 1.08x10^−4M silver(II) oxide AgO solution to a reaction flask. Calculate…

A:

Q: OH Mo-Lo-Lov + H₂C - Salicylic Acid + Acetic Anhydride - C,H,O, C₂H₂O3 G.& + H₂C CH₂ Aspirin +…

A:

Q: You have a super powerful microscope in your lab!  You are able to zoom in on your sodium phosphate…

A: An atom is the basic and fundamental unit of matter. An atom consists of electrons and the nucleus…

Q: For the following questions (Q8-Q12), consider the compound tartrazine (Yellow 5 food dye) that has…

A: Mass of tartrazine = 0.1283 g

Q: A chemist adds 80.0 mL of a 2.76M iron(II) bromide (FeBr,) solution to a reaction flask. Calculate…

A: Given that : The volume of iron (II) bromide (FeBr2) added= 80.0 mL The molarity of iron (II)…

Q: An aqueous solution at 25 °C has a H₂O* concentration of 5. × 10 M. Calculate the OH concentration.…

A: At 25° degree celcius product of hydrogen ions concentration and hydroxide ions concentration is…

Q: How many grams of xylose (C5H1005) would be in 10 liters of a 2 M solution? Show your work or…

A:

Q: A chemist prepares a solution of silver perchlorate (AgClO4) by measuring out 1.73 kg of silver…

A:

Q: In a lab, you're provided with a stock solution of food dye. This is a solution from which you…

A: Dilution of the stock solution: When we dilute a concentrated solution with pure water, the mole of…

Q: A Chemistry student has to prepare 155 mL of 0.100 M KI in water. She finds a bottle that states it…

A: The required solution is 155 millilitres of 0.100 M KI in water.

Q: Calculate the eq per liter of 0.321g Na2CO3Na2CO3 when it is mixed in a 250ml solution. (MM Na2CO3=…

A: The normality of a solution is an important method which is used to indicate the concentration of a…

Q: A chemist prepares a solution of mercury(II) iodide (HgI,) by measuring out 9.14 mg of mercury(II)…

A:

Q: A chemist makes 0.800 L of mercury(II) iodide (HgI₂) working solution by adding distilled water to…

A:

Q: [OH-] = 1.0 × 10-7 Express the concentration to two significant figures and include the appropriate…

A: Calculate hydronium ion concentration of the folowing---

Q: was titrated with 0.121 M NaOH. The initial burette reading was 1.03 mL, and the final reading was…

A:

Q: How many pg hydrogen are in 3.39 x 1015 ng of barium hydrogen carbonate hexahydrate?The answer must…

A: Given, Note: 1 ng = 10-9 g mass of barium hydrogen carbonate hexahydrate [Ba(HCO3)2.6H2O] = 3.39 ×…

Q: QUESTION 32 A chemist needs to determine the concentration of an unknown monoprotic acid. To do…

A:

Q: A chemist prepares a solution of potassium chloride (KCI) by measuring out 75.7 mg of KCI into a…

A: Given Mass of kcl = 75.7 mg = 0.0757 g Volume of solution = 100ml = 0.1L

Q: A biochemist carefully measures the molarity of magnesium ion in 85. mL of cell growth medium to be…

A: From the dilution formula: M1: molarity of a stock solution. V1: volume of stock solution. M2:…

Q: A Chem 1B student has to prepare 155 mL of 0.100 M KI in water. He finds a bottle that states it is…

A:

Q: a chemist adds 0.75L of a 0.69M nickel(II) chloride NiCl2 solution to a reaction flask. Calculate…

A:

Q: A chemistry student weighs out 0.183 g of sulfurous acid (H,SO3), a diprotic acid, into a 250. mL…

A: According to law of gram equivalence, for an acid base reaction at equivalence point, number of gram…

Q: A chemist adds 405.0mL of a ×1.710−5 M silver(II) oxide AgO solution to a reaction flask. Calculate…

A: Molarity is defined as the molar concentration of the solution. It gives the number of moles of…

Q: A particular brand of beef jerky contains 5.81\times 10^-2% sodium nitrite by mass and is sold in an…

A: Answer:Mass percentage of a substance in a mixure is equal to its mass present in 100 g sample of…

Q: lonic Compounds and Ratios Chemistry When salt crystals of ionic compounds are dissolved by water…

A: For the first three solutions, anions are drawn as shown below.

Q: A chemistry student weighs out 0.178 g of acrylic acid (HCH,CHCO,) into a 250. mL volumetric flask…

A:

Q: If 42.1 mL of 0.214 M HCl solution is needed to neutralize a solution of Ca(OH)2, how many grams of…

A:

Q: concentration of the cation and anion

A:

Q: The total hardness is due to one or a combination of Ca2+, Mg2+, and Fe2+ in your sample. It is…

A: It is given that, convenient to express this hardness as though it was entirely due to Ca2+. So…

Q: A chemistry student weighs out 0.191 g of lactic acid (HC,H,0,) into a 250. mL volumetric flask and…

A: Given 0.191 gram lactic acid  in 250 ml flask and titrated  with 0.05 M NaoH. First  we calculate…

Q: A chemistry student needs to standardize a fresh solution of sodium hydroxide. She carefully weighs…

A: The balanced chemical reaction is given as: H2C2O4 (s) + 2NaOH (aq) → Na2C2O4 (aq) + 2H2O (l)…

Q: What volume of 0.239 M NaOH, in milliliters, contains 20.0 g of NaOH? Volume = mL

A:

Q: One of the standard solutions used in preparing the Calibration curve in Figure 1 was a 88.5 mM…

A: Given -  Molarity of Cr(NO3)3 Solution = 88.5 mM  =  88.5×0.001 = 0.0885 M  And, volume of this…

Q: Blue dye can be decolorized by treatment with bleach. The kinetics of the reaction can be studied by…

A: Since first two questions are related to each other and the third one is different. Hence, we solve…