A 523.1-mg sample of impure KBr is treated with excess AgNO3 and 814.5 mg AgBr (187.774 g/mol) is obtained. What is the purity of the KBr (119.002 g/mol)?
Q: how much copper ion remains at equilibrium?
A:
Q: How many moles of Na,SO4 are in 100.0 mL of a 0.2500 M solution ? The GFW is 142.07 g. O A. 0.0500…
A: 0.25 M Na2SO4 solution. Molarity = number of moles in 1L of solution So, 0.25 moles of Na2SO4 in 1 L…
Q: If the average molar mass of a sample of soybean oil is 1500 g/mol, how many grams of NaOH are…
A: Saponification is the process that involves the conversion of fat, oil, or lipid, into soap and…
Q: Smoke detectors in homes and apartments contain Am-241,
A:
Q: The density of a substance is 3.596 g/ml and has a weight of 32g. What is the volume?
A: Volume is defined as the total space occupied by a substance. Density can be defined as the…
Q: 40.00 mL of 0.1100 M HCl is diluted to 100 mL with H2O and titrated with 0.1M NaOH. Calculate the pH…
A: pH is generally a method to find acid or base. The ranges from 0 to 14, with 7 being neutral. pHs of…
Q: How many grams is one mole of potassium chloride KCI?
A: Moles : unit of concentration Mole concept is used to convert mass and number of particles. 1 mole…
Q: How many moles of argon are in 40.1 g of argon?
A: In this question, we have to find the number of moles of argon in 40.1 gm of argon using the formula…
Q: 0.47 absorbance/ 4713.6 mol/L = In scientific notation please & 0.57 abosorbance/4713.6 mol/L=
A: Beer-Lambert law states a linear relationship between concentration and absorbance. When…
Q: What does the formula DPD = SF – TP mean?
A: If a solute is added to water, it decreases its diffusion pressure. The difference between diffusion…
Q: Determine the pH for the following solutions. {H3O+}=2.4x10^-2 M
A: p in pH denotes negative of the logarithm(-log). So pH is negative logarithm of molarity of H pH…
Q: Which is the highest boiling point of 1-Octene or 1-nonene? Why?
A: Boiling points of alkenes depends on more molecular mass (chain length). The more intermolecular…
Q: If you have a sugar with a molecular weight of 315 g/mol, how many grams would you need to add to…
A: Given the molecular weight of sugar is 315g/mol. The volume of the solution is 487 mL and its…
Q: How many kilocalories are needed to vaporize 5.8 mol of Br2?
A: Bromine is a dark reddish-brown fuming liquid with a pungent odor. Denser than water and soluble in…
Q: Ammonia-containing window cleaners are considered pH-neutral substances true or false?
A: As chemicals are dissolved in water, the pH level of the mixture is either acidic or basic. pH level…
Q: Propanamide and methyl acetate have about the same molar mass, both are quite soluble in water, and…
A: Propanamide is an amide of propanoic acid with the chemical formula CH3CH2CONH2. Methyl acetate is…
Q: What is the mass in grams of 6.022 * 1023 O atoms of mass 16.00 amu?
A: The mole concept is a convenient method of expressing the amount of a substance. Any measurement can…
Q: If our alloy has a composition of 90% Sn and has a temperature of 100C, determine: a) What…
A: A phase diagram is a graph that depicts a substance's thermodynamic state at various pressures and…
Q: What is the molarity of a NaOH solution if 48.0 mLneutralizes 35.0 mL of 0.144 M H2SO4?
A: An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used…
Q: Using your calculated concentration from the graph (in mol Cu2+/L) and the concentration of the…
A:
Q: The pH of a 0.0082 M solution of HNO₃ is
A: The pH of solution is a measure of the molar concentration of hydrogen ions in the solution and as…
Q: What mass of gallium oxide, Ga2O3, can be prepared from 29.0 g of gallium metal? The equation for…
A: A chemical reaction where there is loss of electrons or gain of oxygen and resulting in the increase…
Q: How many moles of tungsten(VI) oxide and hydrogen were required to produce the 5.00 g of tungsten?
A: Stoichiometry is a section of chemistry that involves using relationships between reactants and/or…
Q: 5. A 0.8720 g sample consisting solely of sodium bromide and potassium bromide yields 1.505 g of…
A: NaBr is sodium bromide KBr is potassium bromide AgBr is silver bromide Molecular weight, Na=23…
Q: How many mL of 0.254 M NaOH are needed to fully react with 37.50 mL of 0.358 M H2SO4?
A: Concentration of the NaOH = 0.254 M Conc. of H2SO4 solution = 0.358 M or conc. of [H+]=2×0.358 M…
Q: The OH ] of a solution can be determined from the pOH using the equation OH"]= 10" POH
A:
Q: A 5 ml vial of hydrocortisone is having 2% (w/v) concentration. How many vials will be required, if…
A: KEY WORDS :- Formula for vial required = Dose required to prepareDose in hand×quantity
Q: How many grams of copper sulfate would you need to make 5 L of a 7 M copper sulfate solution?
A: Molarity is defined as the moles of solute per litre of the solution. Hence, our target is to make…
Q: To form S²⁻ ions from gaseous sulfur atoms requires 214 kJ/mol, but these ions exist in solids such…
A: The lattice energy is the amount of energy required in the formation of crystalline lattice of…
Q: A 75.0 g piece of Ag metal is heated to 80.0 C and dropped into 50.0 g of water at 23.2 ° C. The…
A: To find: Specific heat of silver
Q: To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW:…
A: Convert the constituents in grams by multiplying with the respective molarity to convert grams per…
Q: If an unknown solution of cobalt (II) chloride has an absorbance of 0.79, what is its concentration?…
A: The Beer’s Law plot is a graphical representation of the relationship between the absorbance and the…
Q: What would be the working stock concentration (in molarity) if you diluted 250 uL of a stock…
A: Molarity is defined as the number of moles dissolves in 1000 ml of the solution.
Q: What is the pH of a solution of 100 ml of 0.01 M H3PO4 and 100 ml of 0.01 M Na3PO4?
A: A buffer is an aqueous solution containing a weak acid and its conjugate base or a weak base and its…
Q: the vapor phase concentration in ppm(v)?
A: Vapour phase concentration is the amount of water vapor present in a unit volume of air, usually…
Q: The molar stability of mercury (II) sulfide is below. What is the Ksp ?
A: Mercury II sulfide or Mercury sulfide (HgS) . It is almost insoluble in water. But, it can be…
Q: What is the empirical formula of a compound that contains 72.0% carbon, 12.0% hydrogen and 16.0%…
A: Empirical formula It is the formula of a compound in which the exact number of each atom is not…
Q: What is ethidium bromide ?
A: Agarose gel electrophoresis is commonly used for the separation of nucleic acid molecules. It…
Q: The half-life of mercury-197 is 64.1 hours. If a patient undergoing a kidney scan is given 5.0 ng of…
A: The half life (t1/2) is defined as that period of time which is needed for one half of a given…
Q: The density of trifluoroacetic acid vapor was determined at 118.1 °C and 468.5 torr, and found to be…
A: In a chemical reaction, equilibrium is considered the state, where the rate of the forward reaction…
Q: How many moles of HCl are there in 75.0 mL of 0.160 M HCl?
A: Molarity can be stated as the soluble moles of solute, which is dissolved per liter of solution.
Q: Balance the following equation, and tell how many moles of nickel will reactwith 9.81 mol of…
A: The balanced chemical equation is a chemical equation in which both sides of equation contains equal…
Q: If 150ml of polyethylene glycol 400 weighs 74.1g, what is the specific gravity?
A: The division of density of the substance and standard density is called specific gravity. It is also…
Q: What is the mass in grams of 24.2 moles of NaCl?
A: Moles can be stated as amount of any substance, which is measured in grams, liters, atoms, or…
Q: What does “1 Millimolar” (1mM) mean
A: Milli is a suffix in measurement meaning 1/1000 or 10^-3.
Q: If the dehydration reaction of an alcohol is successful, what changes would be seen in the IR…
A: Biochemistry is a branch of biology that deals with the study of chemical processes within living…
A 523.1-mg sample of impure KBr is treated with excess AgNO3 and 814.5 mg AgBr (187.774 g/mol) is obtained. What is the purity of the KBr (119.002 g/mol)?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- 439 mL of 0.270 M hydrochloric acid is exactly neutralized with 0.920 M potassium hydroxide solution. What volume of base solution is required?To make up a solution of phosphate buffered saline (PBS), you need 10 mM Na2HPO4 (anhydrous) (FW: 141.96 g/mol), 3 M NaCl (FW: 58.44 g/mol), and 5mM KH2PO4 (FW: 136.09 g/mol). How many grams of each will you need to make up 850 mL of PBS?How many milliliters of 0.0050 N KOH are required to neutralize 25 mL of 0.0050 N H2SO4? To neutralize 25 mL of 0.0050 M H2SO4?
- Titration of a 12.0 mL solution of HCl requires 22.4 mL of 0.12 M NaOH. What is the molarity of the HCl solution?A sample of steel weighing 2.00 g is analyzed for Cr (AW 52.0). The Cr is oxidized into chromate with alkaline permanganate and the excess permanganate is destroyed. A certain volume of 0.120 M FeSO4 is added to the acid solution and the excess is titrated with 0.0220 M KMnO4, requiring 31.0 mL. If the sample contained 0.50 % Cr, what volume (in mL) of FeSO4 was added?If 10x TBE contains 0.89 M Tris-borate, 0.89 M Boric acid, and 0.02 M EDTA, what is the Molar concentration of Tris-borate in 100 ml of 1x TBE?
- An unknown mixture is known to contain only Ba(OH)2 (MW=171.34 g/mole) and NaOH (MW=40.0 g/mole). If the mixture is known to contain 45% by mass NaOH, and 8.0 grams of the mixture is dissolved completely in 50.0 ml of solution, answer the following. c).If 10.0 ml of a 0.2 M solution of Na2SO4 was added to the 50.0 ml solution, what would be the final concentration of Na+ in solution.A 1.000-g sample containing bromide was dissolved in sufficient water to give 100.0 mL. A 50.00 mL aliquot was measured and after acidification, silver nitrate was introduced to precipitate AgBr, which was filtered, washed, and then dissolved in an ammoniacal solution of potassium tetracyanonickelate(II): Ni(CN)42- + 2AgBr(s) → 2Ag(CN)2- + Ni2+ + 2Br- The liberated nickel ion required 11.70 mL of 0.002146 M EDTA. The other 50.00 mL remaining solution was also analyzed for its Br- content by potentiometry using a metallic electrode of the second kind. e) Write the cell notation of the potentiometric set-up with SCE as the reference electrode. f) Write the Nernst equation that describes the indicator electrode set-up.How many grams of NaOH would you need to make 3,982 mL of a 3 M NAOH solution (m.w. = 40.00 g/mol)? Report your answer in the requested units to the nearest 2 decimal places (Example "40.02"). Do not report the units in your answer; enter the numbers only. It is recommended that you do not round between calculation steps.
- The concentration of a certain sodium hydroxide solution was determined by using the solution to titrate a sample of potassium hydrogen phthalate (abbreviated as KHP). KHP is an acid with one acidic hydrogen and a molar mass of 204.22 g/mol. In the titration, 58.23 mL of the sodium hydroxide solution was required to react with 0.3520 g KHP. Calculate the molarity of the sodium hydroxide. Molarity = __________ MHow many moles of HCl are there in 75.0 mL of 0.160 M HCl?75 mL of 0.300 mol/L sodium phosphate solution is combined with 67.5 mL of 0.350 mol/L calcium bicarbonate. a)Before you begin your reaction, you must accurately produce 1.500 L of your sodium phosphate solution from sodium phosphate trihydrate solid. Write out a procedure to explain all the steps you will take in the lab when making the solution to ensure that your solution concentration is accurate. Please include calculations that show the required mass of solid. Also include the correct names of all equipment used. b)You have a super powerful microscope in your lab! You are able to zoom in on your sodium phosphate solution and take a picture at the molecular level. Label the diagram on the left with the correct choices from the box on the right. You may use arrows or rewrite the symbols in one appropriate place. c)In one sentence, explain what the diagram is showing.