A 3.31 x 10-4 M solution of a new drug (273 g.mol-¹) has an absorbance of 0.750 in a 1.00-cm cell. A 0.3122 g tablet containing the drug is dissolved in water to a final volume of 500.0 mL, a has an absorbance of 0.654 under the same conditions. What is the mass percent of the drug in the tablet? 87.4 56.9

Q: Determine the molar mass of a substance if 0.310 moles has a mass of 152 g.

A: Given :- number of moles of substance = 0.310 mol  Mass of substance = 152 g  To calculate :-  Molar…

Q: The percent by mass of potassium in KOH is  The percent by mass of nitrogen in CH5N is %.

A:

Q: Please expalin in steps with any fake data you want to help explain to me on how to solve - the…

A: Experimentally oxalate ion can be determined by the titrimetric method with the use of KMnO4 as…

Q: sodium chloride is 60.66% chlorine by mass what is the mass % of sodium in sodium chloride?

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Q: How many conversions are needed to go from mass (g) of the given to Mole (Y) of the find ?

A: We have been asked to find the no. Of steps needed to go from mass to mole of a compound.

Q: How would I Calculate the experimentally determined mass% oxalate and how would I also Determine the…

A: we take any random exapmle: 6H+ + 5(COOH)2 + 2MnO4- ======= 10CO2 + 2Mn2+ + 8H2O

Q: How many grams of KCIO, are needed to form 23.1 g of O,? 2 KCIO, (s) → 2 KCI(s) + 30,(g)

A:

Q: Please expalin in steps with any fake data you want to help explain to me on how to solve - the…

A: Mass percent of sodium oxalate is determoned by titration with potassium permanganate. Let ,X gm…

Q: laanpi he cheinl centrn u RoS %23 H.

A:

Q: Convert 4.80 x 1021 molecules of H₂O2 to moles H₂O2.

A: Number of molecules of Moles of H2 = ?

Q: What is the a.) Balanced Chemical Reaction b.) percent (%) composition by mass of each compound…

A: Molecular formula of calcium polysulphide = CaS5 Molecular formula of hydrochloric acid = HCl The %…

Q: Magnesium at start is 0.33g   mass at end is 0.49 g    Determine the number of moles of magnesium…

A: The no of moles can be calculated by the following formula. no of moles=massmolar mass Molar mass of…

Q: What is the mass percent of of 0.389g of silicon that reacts with oxygen to form 0.832g silicon…

A: Percent by mass ( w/w)% = (mass of Si/mass of SiO2) × 100 %

Q: What volume of 2.0 M sulfuric acid must be used to prepare 350. mL of 0.342 M H,SO4? type your…

A:

Q: loss of mass mass % of water theoretical mass % of water.

A: 1. Loss of mass Assume we have CaCO3 and iswe react it with HCl then reaction proceed as:- CaCO3 +…

Q: Calculate the number of moles in the sample and iron atoms in the sample.

A: Given :- mass of iron = 15.7 g  To calculate :-  moles of iron  number of atoms of iron  number of…

Q: Do you think it is possible to obatin a % yield higher than 100%? Explain in detail What does it…

A: The question is based on the concept of experimental Chemistry  we need to account for the…

Q: Calculate the number of moles in 21.0 g of each of the following: Y Part D Gaz Sa Express your…

A: Part D Given, mass of Ga2S3 = 21.0 g moles of Ga2S3 = ? Note:  molar mass of Ga2S3 = 235.64 g/mol

Q: STARTING AMOUNT

A: 8.43 * E23

Q: Why are coefficients used in mole ratios instead ofsubscripts?

A: Mole ratio It is the ratio between the number of moles of any two compounds in a balanced equation…

Q: What mass of NH3 is needed to completely react with 0.600 moles of O2 (g) based on the reaction…

A:

Q: How will the relative number of moles of Mg and O be affected if the following procedural errors are…

A: a. If the crucible is not brought to constant mass, meaning that it has some additional mass to…

Q: What is the maximum mass of gallium bromide that can be formed when reacting 41g of gallium with 38g…

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Q: A solution is to be prepared that will be 4.31% by mass calcium chloride. To prepare 186 g of the…

A:

Q: Methyl 5.31 98 hydrogen, and 31.6go oxygen. Calcylate the empirical pormi methyl salicylaté.…

A:

Q: Calculate the mass of water former by the complete reaction of 96.1 g of propane with oxygen

A:

Q: if 1.095 g of unknown is found to be 0.00575 moles of solute, what is the molar mass of the unknown.…

A: Given data : Mass of the unknown = 1.095 gms Number of moles = 0.00575 We can apply the formula for…

Q: 6. Determine the Percentage composition of all the elements in: MgCr,O,

A: In this question we have to calculate the percentage composition of all the elements present in the…

Q: 3.00x10^31 molecule sample has how many moles?

A: We know that ; 1 mol of sample contains Avogadro's number of Molecules . (Avogadro's number = 6.022…

Q: What mass of oxalic acid, H2 C204, is required to prepare 350. mL of a solution that has a…

A: The molarity of the oxalic acid (H2C2O4) solution is = 0.20 M The volume of the solution is = 350.…

Q: How many molecules of CH, are in these 5.00g? How many moles of Cl, are in 15.0 g of Cl,? How many…

A: Given, chemical reaction takes place between methane and chlorine. The balanced chemical equation of…

Q: Calculate the mass in grams of each of the following samples. (Remember from class that the…

A: Given, a. moles of potassium chromate = 0.251 mol b. moles of lithium perchlorate = 1.51 mol c.…

Q: Aluminium has a density of 2.70 g/cm³. How many moles of aluminum are in a 13.2 cm³ block of the…

A: Answer:Number of moles of a substance is always equal to the ratio of its mass and molar mass.

Q: copper and nickel can be mixed to for corrosion resistant alloy. if a particular alloy is prepared…

A: Given that  Moles of copper = 10.7 Moles of Ni = 1.2

Q: Calculate the number of grams of each product produced in the reaction of 5.50 g of NazPO4 and…

A: stoichiometrically we can determine the mass of product by establishing a relation between the mole…

Q: Determine the mass in grams of 1.6 x 10-3 mol glucose , CoH12O6

A: Since mass = moles X molar mass  And molar mass of Glucose = Atomic mass of C X 6 + Atomic mass of H…

Q: 4. An impure sample of magnesium chloride has a mass of 50 g. After perfect purification, 45 g of…

A: Given  Mass of impure magnisium chloride = 50g  Mass of pure magnisium chloride = 45 g  Mass of…

Q: 1. A 1.31g sample of sulfur was reacted with chlorine to form 4.22g of compound. What is the…

A: Given:Sulfur reacts with chlorine to form a compoundMass of sulfur = 1.31 gMass of compound = 4.22…

Q: After a hydrate of sodium carbonate weighing 1.000 g is heated in a crucible for 15 minutes to drive…

A:

Q: b: A compound is 16.2% car Its formula mass is arou What are its empirical a

A: Given, Carbon = 16.2 % Nitrogen =18.9% Oxygen = 64.9 % Molecular mass = 296 amu

Q: In the conservation of the mass experiment we observed the conservation of masses by comparing the…

A: In the above question, the law of conservation of  mass stated  that the masses of a system should…

Q: A solution is prepared by dissolving 7.46 g of ordinary sugar (sucrose, C12H22011, molecular weight…

A: For the first question, we have to find the freezing point of a solution prepared by dissolving 7.46…

Q: D. Calculate the number of C atoms in 25.0 g of CO2.

A:

Q: What is the percent by mass of oxygen in water (the best estimate to 1 sig fig)?

A: