Chalcopyrite, the principal ore of copper (Cu), contains 34.63% Cu by mass. How many grams of Cu can be obtained from 9.68 x 10 kg of the ore? Be sure your answer has the correct number of significant digits.

Q: A chemist adds 1.40 L of a 11.5 g/dL sodium chloride (NaCl) solution to a flask. Calculate the mass…

A: Note: 1 L = 10 dLVolume of a solution = 1.40 L = 1.40 × 10 dL = 14.0 dLConcentration of NaCl…

Q: Liquid octane  CH3CH26CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A: Given that 8g of octane and 44 gO2 are mixed in a reaction. Number of moles of C8H18 and O2 can be…

Q: Gaseous ethane  CH3CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A: Given:     Mass of ethane = 4.5 g.     Molar mass of ethane = 30 g/mol.     Mass of oxygen = 23.2 g.…

Q: A chemist prepares a solution of sodium chloride (NaCl) by weighing out 2.346 g of sodium chloride…

A: Concentration (w/V) = wt of solute in gram /volume of solution in Litre (V ltr)

Q: A chemistry student needs 70.0 g of tetrahydrofuran for an experiment. By consulting the CRC…

A:

Q: A chemistry student needs 40.0 g of carbon tetrachloride for an experiment. By consulting the CRC…

A: The objective of this question is to calculate the volume of carbon tetrachloride that the student…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Significant Figure Rule:When multiplying or dividing numbers, the result has the same number of…

Q: In 1999, scientists discovered a new class of black holes with masses 100 to 10,000 times the mass…

A:

Q: A chemist must dilute 89.2 mL of 407. mM aqueous potassium dichromate (K₂Cr₂O₂) solution until the…

A: As we know,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: Your calculator gives you the number 1761.2868 as the volume (in cm^ 3) of a box 2.0 ft by 6.5 cm by…

A: When rounding off the result of a multiplication, the number of significant figures in the final…

Q: Liquid octane (CH3CH26CH3) will react with gaseous oxygen (O2) to produce gaseous carbon dioxide…

A: The reaction of octane with oxygen is given as  C8H18 + 12.5 O2 ----> 8 CO2 + 9 H2O Since moles…

Q: A chemistry student needs 40.0 mL of glycerol for an experiment. By consulting the CRC Handbook of…

A: Given  Volume of glycerol = 40 mL  density of glycerol  = 1.26 gram cm-3 or 1.26 gram/cm3 Mass of…

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by measuring out 69.2g of copper(II)…

A:

Q: A chemistry student needs 45.0 mL of diethmylamine for an experiment. By consulting  the CRC…

A: Given,Volume of diethylamine = 45.0 mL = 45.0 cm3         (1mL = 1cm3)Density of diethylamine =…

Q: A chemistry student needs 15.0 g of ethanolamine for an experiment. By consulting the CRC Handbook…

A: According to the question,The student needs the mass of ethanolamine = 15.0 g.The density of the…

Q: A major component of gasoline is octane (CH18). When octane is burned in air, it chemically reacts…

A:

Q: A chemist adds 975.0 mL of a 9.36 g/dL sodium hyposulfate (Na, S,0,) solution to a flask. Calculate…

A: The ratio of moles to the volume in liters is known as molarity.

Q: Liquid hexane  CH3CH24CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A: The given reaction as follows,

Q: Limiting reactants Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to…

A: In the given question we have to calculate the maximum mass of sodium chloride that could be…

Q: Gaseous butane (CH3(CH2)2CH3) will react with gaseous oxygen O2 to produce gaseous carbon dioxide…

A: As given in the question that butane reacts with gaseous oxygen to produced carbon dioxide and…

Q: A chemist must dilute 70.4 mL of 9.54 mM aqueous calcium sulfate (CaSO4) solution until the…

A:

Q: Aqueous hydrochloric acid (HCI) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The reactant which produces the least amount of product is called limiting reagent and the amount of…

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The reaction of aqueous HCl with NaOH results in the formation of aqueous NaCl and water. Amount of…

Q: Gaseous ethane CH3CH3 will react with gaseous oxygen O2 to produce gaseous carbon dioxide CO2 and…

A: Here, we have to calculate mass of ethane that is left after the reaction.

Q: nemist adds 240.0 mL of a 6.5M silver nitrate (AgNO3) solution to a reaction flask. Calculate the…

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

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: Addition and subtraction:Here, in this case we round the answer to the same number of decimal places…

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

A: Given : mass of HBr = 68.0 g And mass of NaOH = 19.8 g The balanced reaction taking place is  NaOH +…

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: Mass of HCl = 2.55 gMass of NaOH = 1.3 gMass of sodium chloride (NaCl) formed = ?

Q: A chemist must dilute 22.0 mL of 45.9 µM aqueous magnesium fluoride (MgF₂) solution until the…

A:

Q: and gaseous water  H2O . Suppose 2.6 g of hexane is mixed with 13.3 g of oxygen. Calculate the…

A: Given: 2.6 g of hexane is mixed with 13.3 g of oxygen To find: Minimum amount of oxygen left after…

Q: A chemist adds 190.0mL of a 6.4M silver nitrate AgNO3 solution to a reaction flask. Calculate the…

A:

Q: e the chemist has added to the flask. Be sure your answe mg x10 X 3

A: Given,           Volume of Hg2Cl2 solution= 385.0 mL = 0.385 L            Concentration of Hg2Cl2…

Q: A chemistry student needs 90.0 mL of carbon tetrachloride for an experiment. By consulting the CRC…

A: Given, Note: 1 mL = 1 cm3 Volume of Carbon tetrachloride = 90.0 mL = 90.0 cm3 Density of Carbon…

Q: Gaseous methane (CH₂) will react with gaseous oxygen (O₂) to produce gaseous carbon dioxide (CO₂)…

A: Given:mass of methane (CH4 ) = 1.1 gmass of Oxygen (O2 ) = 7.93 gmolar mass of CH4 = 16.04…

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 × 10–4 m3…

A: We know,Mass = Density x Volume

Q: Aqueous hydrochloric acid (HCl) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: We have to calculate the maximum mass of water that can be formed.

Q: A recent study found that the median concentration of lead in Canadian tap water is 2.3 x10-8 mol/L.…

A: Given,  The concentration of lead in Canadian tap water =  2.3 x10-8 mol/L. The mass of lead…

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.