Tungsten is a very dense metal (19.3 g/cm3) with extremely high melting and boiling points (3370ºC and 5900ºC). When a small amount of it is included in steel, the resulting alloy is far harder and stronger than ordinary steel. Two important ores of tungsten are FeWO4 and CaWO4. How many grams of CaWO4 would contain the same mass of tungsten that is present in 657 g of FeWO4?

Q: In terms of mass, calculate the percentage of the active ingredient for each of the following…

A: Mass percentage is defined as the total mass of the substance( here active ingredients) divided by…

Q: Calcium chloride is 36.11% calcium. How many grams of calcium are present in 2.55 x 103 g of calcium…

A: The mass percent of the calcium in calcium chloride is = 36.11 % The mass of calcium chloride is =…

Q: How many grams are in 7.59 x 1023 molecules of Fe2O3?

A: Given 7.59 ×1023 molecules of Fe2O3 . To find grams of Fe2O3 .

Q: What mass of iron (d = 7.874 g/cm') does a 2.0 in x 1.5 in x 10.0 in sample have?

A: Given  density of Iron = 7.874 gram/ Cm3 Volume = 2.0 inch × 1.5 inch × 10 inch 1 inch   = 2.54 Cm…

Q: The molecular formula for caffeine, one of the key compounds found in coffee and tea, is C8H10N4O2.…

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Q: 3. If a student had access to a balance for this procedure, they would also be asked to weigh each…

A: • % Composition of A in mixture = Mass of AMass of Mixture x 100Given,Mass of Iron = 2.85g.Mass of…

Q: what is the weight in grams of 4.30 x 10^14 CF4 molecules?

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Q: 5. Aspirin has the formula CyH3O4. How many atoms of oxygen are there in a table weighing 360 mg? a.…

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Q: We have 425 cm3 of a material. How many g is it? The material has density of 0.345 g/cm O 68.0 g O…

A: We have to find mass ,volume and density  is given in the question  Volume of the material = 425 cm3…

Q: Question attached

A: 1: Identify the given in the problem stated. The given in the problem are the following: Each cork…

Q: (a) Palladium (Pd) is an element with properties similar to those of platinum. It is useful in…

A: Given : Mass of bar = 96.03 g Length of bar = 10.7 cm Diameter of bar = 9.82 mm = 0.982 cm…

Q: 2NH3(8)+302(8)+2CH4(g) 2HCN(g)+6H2O(g) kJ

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Q: Which part of the description of a compound or element refers to its physical properties and which…

A: Physical property: Physical property of an element or compound includes chemical composition,…

Q: A student is running an experiment in which 48.1 grams of MgBr2 is needed, but the only jar of…

A: Given Mass of MgBr2 needed = 48.1 g

Q: 1.Which of the following statements about a compound is incorrect? (a)  A molecule of a compound…

A: The question lies in basic chemistry of atoms, molecules and compounds. Let us first be clear about…

Q: Volume of DNA crystals is 0.144 nm^3 what is the volume in milliliters

A: Given: Volume in nm = 0.144 nm3

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: O CCC Scale, Proportion, and Quantity A simple bread recipe calls for 400 g of flour, 8 g of salt…

A: For making 1loaf of bread we need 400g flour + 8g of salt (NaCl) + 1g of yeast + 0.3L of water.  We…

Q: 5 (2.74) The carat is the unit of mass used by jewelers. One carat is exactly 200mg. How many carbon…

A: 1 carat = 200 mg Diamond present = 2.5 carats Molar mass of carbon = 12.01 g/mol

Q: 1) Which of the following is chemical property? A. Objects made of silver become tarnished. 3+ B.…

A: Chemical property of a substance is the property that observed after or during the chemical…

Q: If liquid bromine has density = 3.12 g/mL, how many Br2 molecules are present in a 1.0-mL sample of…

A: Given: Density of liquid bromine (d) = 3.12 g/ml The volume of liquid bromine =1.0 ml To find:…

Q: Gold (Au) has a density of 19.32 g-cm-3. If a spherical gold nanoparticle has a diameter of 50 nm…

A: Density of Gold nanoparticle is 19.32 g/cm3 and its volume is 7*104 nm3.

Q: A 100 mL solution of theobromine in water is made, and the solution has a density of 1.16 g/mL. If…

A: Given: Density of theobromine solution = 1.16 g/mL The density of water = 1g/mL, To calculate:…

Q: You wish to prepare 210 grams of 16.3 % Mg(NO3)2 You will need grams of magnesium nitrate and mL of…

A: Given that we have to prepare a 210 grams of 16.3 % MgNO32 solution. Recall the expression of mass…

Q: A compound is found to be 30.45% N and 69.55 % O by mass. If 3.01 g of this compound occupy 780 mL…

A: Empirical Formula :- When we write the chemical formula of a compound with the simplest ratio or…

Q: R2 R2 он Nanocrystalline MgO CH,CN, 100 °C R1 R1 2

A: Nanocrystalline substances are chemical substances which are used in small scale and which exhibit…

Q: You wish to prepare 222 grams of 21.0 % Fe(NO3)2. You will need grams of iron(II) nitrate and mL of…

A:

Q: A 4-M sample of hydrochloric acid, HCl, has a density of 1.42 g/ml. What is the mass % (wt/wt) of…

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Q: The formula for lactose is C12H22O11, and the monohydrate is C12H22O11H2O. What is the percent by…

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Q: The natural abundances of elements in the human body, expressed as percent by mass, are: oxygen…

A: The given data contains, person weighs =62 kg =62000 g. Natural abundances in mass percent are, O…

Q: If 2.00 grams of Epsom salts are allowed to dehydrate in a warm oven overnight, the mass of the…

A: Since No of mole of epsom salt (MgSO4.xH2O) will be equal to no of mole of MgSO4. On solving we…

Q: 2. A particular brand of beef jerky contains 0.0552 % sodium nitrite (NaNO2) by mass and is sold in…

A: Given: % NaNO2=0.0552 % 1 bag contains 8 oz sample Mass of sample= 8 x 28.35 g =226.8 g

Q: All of the platinum ever mined = 25 ft3 What is the price of all of the paltinum ever mined?…

A: The conversion of volume of platinum from 25 ft3 into cm3 can be done as,

Q: Student K was asked to determine whether his bar was made of pure palladium.  II) Student S was…

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

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Q: 7. What kind of a compound is KN and how do you know this? Draw a representation of three units of…

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Q: what is the mass in grams of 1.49 x 10^17 chromium atoms?

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Q: One of the inherently satisfying features of chemistry is that chemical materials form and interact…

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Q: An analytical chemist measures the amount of Elements E, and E, in four samples of an unknown…

A: Since the unknown substance, X contains elements E1 and E2, it can be either a compound of E1 and…

Q: The avg mass of bolt, nut, and washer are 9.25 g, 4.02 g, and 2.38 g, respectively. A set contains…

A: Given:Average mass of 1 bolt = 9.25 g.Average mass of 1 nut = 4.02 g.Average mass of 1 washer = 2.38…

Q: How many atoms are there in each of the following substances? I.) 5.14 g P Express your answer…

A: molar mass of P   = 31 g/mol molar mass of Hg = 200.59 g/mol molar mass of Bi   = 200.98 g/mol molar…

Q: A study of the Earth by The National Aeronautics and Space Administration (NASA) determined there…

A: Given  7.00 x 1011 tons of carbon    Conversion factor:  1 ton = 907.19 kg  1 kg = 1000 g = 103 g…

Q: Question 3

A: Copper is an element having symbol Cu and aluminum is an element having symbol Al.

Q: A student is given a 6.216 g mixture of iron filings, calcium chloride, and sand. He separates the…

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Q: What number of atoms of carbon is in 1.00-carat diamond

A: Number of moles = mass/molar mass  Molar mass of carbon = 12.0107 g/mol  1 mol carbon contains 6.022…

Q: What mass of oxygen is present in 10.0 grams of potassium nitrate (KNO3)?

A: Mass of KNO3 = 10 g Molar mass of KNO3 = 101.1 g/mol

Q: How many carbon atoms are there in a 1.0-carat diamond? Diamonds are a form of pure carbon. ( 1…

A: Given:1 carat=0.20gWe know,Atomic mass of C=12.0107g/molalso, 1 mol of C=6.022×1023 atoms of C

Q: %3D What is the mass of 24.5 mL gasoline? (density of gasoline = 0.749 g/mL) O 18.4 g O 24.5 g O…

A: Given - density of gasoline= 0.749 g/ml volume of gasoline=24.5 ml

Q: A flask has a mass of 78.23 g when empty and 593.63 g when filled with water. When the same flask is…

A: Given Information - mass of empty flask =  78.23 g  mass of flask filled with water = 593.63 g  mass…

Q: For calcium, carbonmonoxide and carbondioxide; 1. Calcium, carbonmonoxide 12 and carbondioxide are…

A: 1) calcium, carbon monoxide and carbon dioxide are composed of the same kind of molecules.

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".