Chalcopyrite is among the most common varieties of copper ore. Assuming chalcopyrite is 34.4% copper by mass (34.4 grams copper per 100. grams of ore), how many kilograms of chalcopyrite would be needed to smelt 30.0 kilograms of pure copper?

Q: You are drying a sample of Ba3(PO4)2. After 5 minutes of drying it weighs 1.2034 g. You continue to…

A: Answer: Percent change in mass will be the ratio of change in mass with initial mass, therefore %…

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 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: A chemist adds 0.45 L of a 2.9 × 10 M copper(II) fluoride (CuF,) solution to a reaction flask.…

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Q: A molecule has a mass of 4.65 x 10^-23 g. Provide two possible chemical formulas for such a…

A: Given  mass of 1 molecule = 4.65 x 10-23 g we know  mass of 1 molecule = 1 mole  1 mole = 6.022 x…

Q: Magnesium nitride is used in the preparation of certain ceramic materials and the manufacture of…

A: 3 Mg (s) + N2 (g) → Mg3 N2 (s) mass of Mg = 12.7 g Actual Mass of Mg3N2 produced = 8.54 g

Q: Using the balanced equation from Question #8, how many grams of lead will be produced if 2.54 grams…

A: Given, 2PbS + 3O2 ---------->  2Pb + 2SO3 mass of PbS react = 2.54 g mass of O2 react = 1.88 g…

Q: A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration…

A: The amount of solute which is dissolved in given amount of solvent is known as concentration.

Q: a label on a bottle of cough syrup shows that the bottle contains 25 mg dextromethrophan (DTN)…

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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: Given the following data, what was the dollar amount of the gold that could have been extracted from…

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Q: The nickel is comprised of two metals, nickel and copper. Surprisingly, the coin is only 25% nickel.…

A: The coin is comprised of nickel and copper. The mass percentage of nickel in the coin is = 25% The…

Q: Suppose you analyze a 35.4 g sample of bleach and determine that there are 2.26 g of sodium…

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Q: Suppose you need 7.0 m of Grade 70 tow chain, which has a diameter of 3/8" and weighs 2.16 kg/m, to…

A: Given data :- Length of required tow chain = 7.0 mGrade of tow chain = 70 Diameter of tow chain =…

Q: using the balanced chemical equation, 2PbS +3O2-->2Pb + 2SO3, how many grams of lead will be…

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Q: 5. Given your experience in mass determinations and with volumetric glassware, which factor used -…

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Q: What is the mass of the oxygen used during the reaction? Iron + Oxygen → Iron Oxide Iron 19.43 g…

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Q: How many grams of carbon are in 7.25 mL of butane (C4H10)? (density of butane = 0.601 g/cm^3)

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

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Q: Calculate the number of grams of sodium in 2.20 g of this sodium-containing food additive.…

A: Given, mass of sodium benzoate (NaC7H5O2) = 2.20 g mass of sodium (Na) = ? Note: molar mass of…

Q: Calculate the number of grams of sodium in 1.20 gg of each sodium-containing food additive.…

A: Given,             1.20 g of sodium benzoate, NaC7H5O2Required,                  The number of…

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: The following equation represents the reaction between aluminum (Al) and bromine (Br2) to produce…

A: Aluminium reacts with bromine to form aluminium bromide. The equation for the balanced chemical…

Q: 2. The picture in the introduction shows that the mass of a crucible and lid was determined to be…

A: Given,  The mass of Crucible and lid = 22.1504 g.  The mass of crucible and lid  and hydrate =…

Q: A 1 gallon bottle of a certain brand of bleach costs $1.49. Determine the cost to buy enough bleach…

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Q: Determine the elemental percentages of all elements in C7H12CuO2. Enter your answer to two decimal…

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Q: What would be the mass, in grams, of a sphere of titanium which is 24.68 mm in diameter? V =…

A: Given : Sphere of titanium with diameter = 24.68 mm = 2.468 cm…

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

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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: In preparing a zinc oxide ointment, 28.35 g of zinc oxide was used rather than the correct…

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Q: Calculate the cost of one pound of nitrogen from a f

A: The objective of the question is to determine the cost of one pound of nitrogen from a fertilizer…

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

A: Mole=Mass/molar mass  Then mole-mole relationship We will get the answer

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: Using the balanced equation from Question #8, how many grams of lead will be produced if 2.54 grams…

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Q: Willa weighs a clean, dry, empty crucible and finds it to have a mass of 95.83 g. After putting a…

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Q: What mass of copper(I) phosphate contains 3.20x1023 oxygen atoms? Provide your answer in decimal…

A: Chemical formula : Cu3(PO4)2  Given, Atoms of Oxygen = 3.20 x 1023 atoms. Molar mass  : 380.58 g/mol…

Q: Some people like to make their own hand lotion because it can be less expensive than buying it and…

A: Given data:mass of water   =   253 g                                  mass of glycerin   =  264 g…

Q: calculate the quantities needed to prepare the solid and semisolid compounds. Round your answers to…

A: According to the question, we need to prepare 1.5 oz i.e 42.52 grams of 15% salicylic acid ointment…

Q: Using the density of commercial bleach (1.08g/ml), calculate the mass percent of sodium hypochlorite…

A: Density of bleech = 1.08 g.ml-  Molar mass of sodium hypochlorite = 74.44 g.mol-

Q: A sunscreen preparation contains 2.50% by mass benzyl salicylate. If a tube contains 4.0 ounces of…

A: It is required to calculate the mass of benzyl salicylate in kg required to manufacture 325 tubes of…

Q: A sample of zinc sulfide having a mass of 3.04 g was analyzed and found to contain 1.00 g of sulfur,…

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Q: Crime scene investigators keep a wide variety of compounds on hand to help with identifying unknown…

A: Given: Percent mass of carbon = 67.31 %. Percent mass of hydrogen = 6.978 %. Percent mass of…

Q: What is the mass (in kg) of 6.89 × 10^25 molecules of carbon dioxide?

A: Mass is a physical quantity which indicates the amount of matter present in a substance. Its units…

Q: The legal limit for chromium in drinking water is 0.10 ppm. What is the maximum permissible mass of…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".