The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 295 g of pure Cu? Express your answer to three significant figures and include the appropriate units.

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: A chemist prepares a solution of iron (II) chloride (FeCl₂) by measuring out 33. mg of FeCl₂ into a…

A: According to the question, The mass of the FeCl2 = 33 mg The volume of the solution = 50 mL   Find:…

Q: A chemistry student weighs out 0.127 g of chloroacetic acid (HCH2ClCO 2) into a 250. mL volumetric…

A: We have to calculate the volume of NaOH needed to reach equivalence point

Q: In the room, the police also found a suspicious amount of CO2 in the air, which is produced when…

A: Combustion reactions of methanol is 2CH4O+3H2O→2CO2+4H2O 2 mole of methanol is producing 2 moles of…

Q: An aqueous solution of sodium nitrate, NaNO3 , is made by dissolving 26.7 grams of sodium nitrate in…

A: Given data, Mass of sodium nitrate = 26.7 g Volume of water = 300mL

Q: Calculate the theoretical yield of lead fro

A:

Q: The following chemical equation has NOT been balanced.   H3PO4 + Ca(OH)2 --> Ca3(PO4)2 + H2O…

A: Given, mass of H2O = 17.94 g  Molar mass of H2O = 18.01 g/mol  Molar mass of Ca(OH)2 = 74.09 g/mol

Q: If 101.10 g of limestone decomposes by heat to give 85.10 g of solid calcium oxide and carbon…

A:

Q: Emissions from the burning of fossil fuels are often reported as gigatons ( Gt ) of carbon. In a…

A: Given that : Amount of carbon emitted by China = 2.9 Gt Amount of carbon emitted by United States =…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Hi, as you have posted 2 questions and have not mentioned which one you want us to solve for you.…

Q: A chemist prepares a solution of potassium dichromate (K,Cr, O,) by measuring out 63.7 µumol of…

A:

Q: When a sample of vinegar was titration, 0.0152 moles of NaOH were involved in the reaction. How many…

A: To determine the amount of acetic acid (CH3COOH) in the sample of vinegar, we need to use the…

Q: A chemist adds 1.30 L of a 0.26M copper(II) sulfate (CuSO,) solution to a reaction flask. Calculate…

A: Given, volume = 1.30 L  Concentration = 0.26 M  Molar mass of CuSO4 = 159.609 g/mol

Q: A certain copper ore contains 2.32% of Cu2S by mass, and the remainder of the ore contains no…

A: Mass percent or weight percent of a substance is the mass of the component by the mass of the…

Q: themist prepares a solution of potassium chloride (KCl) by measuring out 43. mg of KCl into a 50. mL…

A:

Q: 2. You are provided with KIO3, how much do you need to weigh out and in what volume to give you what…

A: To prepare a solution of potassium iodate (KIO3) with a molarity of 4.167 x 10-3 M, you would need…

Q: Aspirin can be prepared from salicylic acid (C7H6O3), which has a molar mass of 138.12 g/mol, and…

A: Given reaction: C7H6O3+C4H6O3⟶C9H8O4+C2H4O2 We have to find the yield of aspirin when 2.10 g of…

Q: The reaction between copper and sulfur is represented by the chemical equation shown below. What is…

A:

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

A:

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: Chemical Formulas as Formulas: Converting between Grams of a Compound and Gram of a Constituent…

A: First convert given mass in kg  into grams .

Q: carrying out Part 1 of this experiment, assume an excess of HCl(aq) reacts with 0.426 g of Mg(s). If…

A:

Q: A chemist adds 145.0mL of a 0.0145/molL potassium dichromate K2Cr2O7 solution to a reaction flask.…

A:

Q: 22.00 g sample of nitric acid (HNO3) has a purity of 96.20% by mass. Calculate the following: the…

A:

Q: Fill in the Blanks Chemical Price/kg (in dollars) NaOH 21.17 CaCl2 41.28 КОН 31.38 CuSO4 93.32…

A: Solution is provided in the image below.

Q: A chemist adds 390.0 mL of a 0.149M potassium permanganate (KMnO4) solution to a reaction flask.…

A: Since, Molarity is the number of moles of solute dissolve in one litre of the solution. Thus,

Q: 5) King Krator the Merciless has called on Pogo, a humble goldsmith, to make a crown for the King.…

A: The mass of gold given by King Krator to gold Smith Pogo is ---- 14 oz. The density of gold=19.3…

Q: During an accident, the air bag inflates due to the decomposition reaction of sodium azide (NaN3).…

A: When NaN3 is heated, it decomposes to give solid sodium and nitrogen gas. NaN3→ 2Na(s)+3N2(g)

Q: A chemistry student must write down in her lab notebook the concentration of a solution of sodium…

A: Answer

Q: A chemist adds 1.75 L of a 2.80 × 10 -5 mol/L mercury(II) iodide (Hgl,) solution to a reaction…

A: The concentration of any solution can be given by its molarity, molality and normality. The molarity…

Q: A chemist prepares a solution of silver perchlorate (AgClO) by measuring out 440. g of silver…

A: The objective of this question is to calculate the concentration of a solution of silver perchlorate…

Q: A student finds that they have 0.2545 g of NH4Cl, 1.1502 g of NaCl, and 1.0181 g of SiO2. Calculate…

A: Given  mass of NH4Cl = 0.2545g mass of NaCl = 1.1502 g mass of  SiO2 = 1.0181 g Initial mass if…

Q: Calculate the following to the proper significant figures:  The molecular mass of iron(II)…

A: Molar mass can be found out by simple adding the atomic masses of each species. moles can be…

Q: Nicotine is an alkaloid that is derived from tobacco plants that acts as a stimulant on the human…

A: The number of molecules or atoms present in the one mole of the substance is equal to the Avogadro…

Q: A chemist adds 125.0 mL of a 0.183M potassium dichromate (K,Cr,O,) solution to a reaction flask.…

A: Mass of Potassium Dichromate can be calculated in the following way:

Q: A chemist adds 240.0 mL of a 1.1 mol/L sodium thiosulfate (Na2S2O3) solution to a reaction flask.…

A:

Q: A chemistry student must write down in her lab notebook the concentration of a solution of potassium…

A: In this we have to find concentration in g/mL   Given data:  Weight of empty graduated cylinder =…

Q: A chemist prepares a solution of silver(I) nitrate AgNO3 by measuring out ×6.4102μmol of silver(I)…

A: Moles of Silver Nitrate = 6.4102 μmol Volume of Silver Nitrate = 450 mL The concentration is to be…

Q: 8 Sb (s) + 10 HNO3 (aq) 4 Sb2O5 (s) + 5 N20 (g) + 5 H20 (1) -> If 120 g of HN03 is reacted, how many…

A: 17.87 g  H2O is produced

Analytical Tools

Analytical tools or analysis tools help one to get into a conclusion or results from the data collected. Analytical tools can be applied for simple data sets and also in the case of big data analytics.