PART A: A solution of cough syrup contains 5.00% active ingredient by volume. If the total volume of the bottle is 74.0 mL , how many milliliters of active ingredient are in the bottle? Express your answer with the appropriate units.   Part B Sylvanite is a mineral that contains 28.0% gold by mass. How much sylvanite would you need to dig up to obtain 30.0g of gold? Express your answer with the appropriate units.

Q: Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium…

A: HCl (aq)   +   NaOH (aq)  ----->  NaCl (aq)  +   H2O (l)Number of mol NaCl formed = number of mol…

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 3.94 mg of zinc oxalate into…

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Q: A laboratory procedure calls for making 520.0 mL of a 1.2 M KNO3 solution. How much KNO3 in grams…

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Q: How much water, in mL, needs to be added to 29.7 mL of 11.2 M HNO3 to make a 6.05 M solution with…

A: Given values,  V1 = 29.7mL N1=11.2M N2=6.05M And V2=?

Q: answer 3. A chemist was given four unidentified, water-insoluble cubes measuring 1 x 1 x1 cm and…

A: Given - Densities of the liquids -  Water = 0.9982 g/mL  Toluene = 0.8669 g/mL  Nitromethane =…

Q: Suppose 3.32 g of sodium chloride is dissolved in 100. mL of a 0.60 Maqueous solution of potassium…

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Q: The change in energy of the reaction is about kilojoules.

A: Change in energy of reaction is the difference of energy of products and reactants.  It is also…

Q: Ocean water contains 3.3 %% NaClNaCl by mass. What mass of ocean water in grams contains 43.8 gg of…

A: Mass percent of NaCl = 3.3 %

Q: You have 59.95 grams of a compound in 89.35 mL solution. (Hint: write as a fraction of grams per mL)…

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Q: mol stock solution of silver A chemist makes 590. mL of silver perchlorate (AgClO,) working solution…

A: • The values provided in the question are:-  i) Initial volume of silver perchlorate solution ,V1 =…

Q: A shopper has a choice of yogurt with three different % m/m concentrations of milk fat (MF): 5.9%…

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Q: You add 297 grams of NaCl to a container and then you add 898 grams of water to that same container.…

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Q: (Zn(NO3)₂) by measuring out 100. g of zinc nitrate into a 150. mL volumetric flask and A chemist…

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Q: Calculate the volume of NaOH  solution the student will need to add to reach the equivalence point

A: Given ;-  Mass of HClO = 0.0909 g  Volume of HClO solution = 250.mL  Molar concentration of NaOH…

Q: The amino acid methionine, which is essential in human diets, has the molecular formula C5H₁1 NO₂S.…

A: The objective of this question is to find out the mass of oxygen in a given mass of methionine. To…

Q: A chemist prepares a solution of magnesium bromide (MgBr.) by measuring out 87. mg of MgBr, into a…

A: Molarity is defined as number of mole of solute divide by volume of solution in liter

Q: You are making a rubbing alcohol (=isopropyl alcohol) solution to disinfect surfaces. You start with…

A: • The values provided in the question are:-    i) Initial volume of isopropyl alcohol solution, V1…

Q: Suppose 2.89 g of zinc iodide is dissolved in 350. mL of a 46.0 m M aqueous solution of potassium…

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Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: Given  mass of HBr     = 36 gram  mass of NaOH = 10.9 gram  mass of water   = ?

Q: A pool cleaning solution is mixed from three different bottles of solution. The first bottle…

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Q: 9.66 x 10-3 grams of CaCO3 were present in a 5.00 mL sample of water, how many grams of CaCO3 are in…

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Q: n. is the total mass of solid recovered? g is the percent composition of naphthalene in the initial…

A: A) 1.661gm B)21.06% C)15.73%

Q: How many milliliters of a 4.10 M sucrose solution would be needed to prepare each solution? Note:…

A: Milliliters of Sucrose Solution NeededWe can use the dilution equation to find the volume of the…

Q: Suppose 1.39g  of potassium nitrate is dissolved in  350.mL  of a  75.0mM  aqueous solution of…

A: Molarity is defined as number of mole present in 1L solution. Here, 39.285 mmol KNO3 contains in 1L…

Q: A sample of 3.58 grams of potassium nitrate is weighed out on a balance and prepared to a volume of…

A: Pottasium nitrate formula KNO3Mass of pottasium nitrate (w)= 3.58 gmVolume of water (V) = 2.50 ×102…

Q: A 25.0 mL aqueous stock solution of 3.7 M NaF is diluted to a final concentration of 1.8 M. What is…

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Q: Aqueous hydrobromic acid HBr will react with solid sodium hydroxide NaOH to produce aqueous…

A: 1) Write the balanced chemical equation. 2) Calculate the limiting reagent by taking the reference…

Q: The dilution formula can be used to to find the new concentration when a known amount and…

A: Step 1: SolutionGiven,Concentrated concentration (M1) = ? Concentrated volume(V1) = 25.00 mL diluted…

Q: 0.0710 moles of CH3CH2OH (ethanol) are dissolved in water to make a solution with a total volume of…

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Q: How many mL of (1.2000x10^-1) M nitric acid are needed to react completely with (3.35x10^1) mL of…

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Q: Calculate the volume in milliliters of a 2.59M nickel(II) chloride solution that contains 175. g of…

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Q: A stock solution of 17.4 M HC2H3O2 is used to make a 310. mL solution with a concentration of 1.5 M.…

A: In this problem, we are given the molarity (M) of a stock solution of HC2H3O2, which is 17.4 M. We…

Q: A sample of ammonium carbonate (MM = 96.09 g/mol) was found to contain 7.6 x 1023 AMU of N. How many…

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Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate…

A: Given :-  No.of moles of ZnC2O4 = 0.0029umol  Volume of solution = 150. mL  To calculate :-…

Q: What is the mass of (9.00*10^0) number of water molecules ? Report your answer to 3 significant…

A: Given:  Number of water molecules = 9.00 × 100 molecules = 9 molecules  To calculate : Mass of water…

Q: Suppose 19.9 g of zinc bromide is dissolved in 200. mL of a 0.40 Maqueous solution of potassium…

A: To find the final molarity of the bromide anion in the solution, we need to determine the moles of…

Q: Suppose 0.314 g of potassium chloride is dissolved in 100. mL of a 14.0 m M aqueous solution of…

A: Volume of solution = 100 mLMolarity of ammonium sulfate = 14.0 mMMass of potassium chloride added =…

Q: A glucose solution is frequently used as an intravenous (IV) solution to supply hydration and/or…

A: Given that: Volume of glucose = 2.05 L Molarity of glucose = 0.278 M

Q: An analytical chemist weighs out 0.159 g of an unknown monoprotic acid into a 250 mL volumetric…

A: Neutralization reaction : Equivalent amount of acid reacts with a equivalent amount of base This…

Q: A chemist adds 45.0 mL of a 1.5 mol/L nickel(II) chloride (NiCl₂) solution to a reaction flask.…

A: Answer: Number of moles of a compound is equal to the product of molar concentration and volume of…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.