Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a) 76%, (b) 68%, (c) 61%, and (d) 56%. Determine the formula and the name of each one of these oxides.

Q: 6. What is the percent by mass of nitrogen in ammonium carbonate? a. 14.53% b. 27.83% c. 29.16% d.…

A:

Q: 1. Calculate the mass in grams of a single oxygen molecule, 02.

A: Molar mass of O2 is 32.0 g/mol  We have to calculate here mass of 1 molecule of oxygen i.e. O2

Q: Complete the table. Element Mass Moles Number of Atoms Pt 0.0449 Fe 1.14 x 1025 Ti 23.8 mg Hg 2.05

A: Pt : Mass of Pt = moles x molar mass = 0.0449 x 195 = 8.76 g Number of atoms of Pt = moles x…

Q: A student, Ken, is given a mixture containing two carbonate compounds. The mixture includes MgCO,…

A: Given,

Q: Symbol mass moles Number of atoms Fe 354 g potassium 302 g silver 2.16 x 1024

A: Number of moles = mass ÷ molar mass Number of atoms in 1 mol = 6.022 x 1023

Q: A materials engineer has filed for a patent for a new alloy to be used in golf club heads. The…

A: The minimum composition of elements is as follows: Mn=25%Al=6.3%C=0.65%Cr=5.5% The maximum…

Q: Determine the empirical formulas of the compounds withthe following compositions by mass:(a) 10.4%…

A: % by mass of C = 10.4%% by mass of S = 27.8%% by mass of Cl = 61.7% Assuming the mass of the…

Q: Vanadium forms four different oxides in which the percent by mass of vanadium is, respectively, (a)…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: many grams of hydra n atomic masses: C: 1 n: Avogadro's numbe r the numerical value

A:

Q: 3.110 The aluminum sulfate hydrate [Al2(SO4)3 ⋅ xH2O] contains8.10 percent Al by mass. Calculate x,…

A: Given: Al2(SO4)3.xH2O (100 g) contains Al by mass = 8.10 g Also, Moles of Al in Al2(SO4)3.xH2O = 2…

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A:

Q: Which of the following has more atoms: 3.55 g ef lithium atoms or 19.1 g of nickel atoms?

A: Mass of lithium = 3.58 g Mass of nickel = 19.1 g

Q: A sugar crystal contains approximately 1.8 * 1017 sucrose (C12H22O11) molecules. What is its mass in…

A: First determine the molar mass of given compound. The molar mass of sucrose is 342.29 g/mol.

Q: Silver chloride, often used in silver plating, contains 75.27% Ag by mass. Calculate the mass of…

A: Percentage by mass – Formula is,

Q: chemical formula

A:

Q: 8,47x102 calculate the mass ; ingram of 8,47x1022 atoms of coppER

A:

Q: A sample of a “suboxide” of cesium gives up 1.6907% of its mass as gaseous oxygen when gently…

A:

Q: Question attached

A: Number of moles of the substance is equal to the ratio of mass to the molar mass of the substance.…

Q: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: The elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID])…

A: Empirical formula always represents the simplest/easiest ratio carried by particular molecule's…

Q: I polht /hat is the empirical formula for a compound that is 38.63% carbon, 40.77% fluorine, and…

A: 100 grams of it would contain  38.63/12=3.21 gram-atoms of carbon, 20.60/16= 1.28 gram-atoms of…

Q: b. Mass of I- in the sample. O 0.1438 g O 0.1722 g O 0.1623 g O 0.1939 g O 0.1840 g

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Q: 2. A 13.07g sample of an unknown compound is composed of 9.48 g of barium, 1.66g of carbon and 1.93…

A: Empirical formula of a compound is denoted by the proportion of numbers of atoms present in the…

Q: Number of atoms of C in 6 moles of C,H10 are: O 24.09x10^23 O 36.13x10^23 O 2.49x10^23 O…

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Q: 4. Complete the following table Mass Moles Particles 3.65 moles Mg 29.54 g Cr 3.54 x 1025 atoms P…

A: Mass = Molar mass * Moles The no of particles in 1 mole = 6.023*1023

Q: A certain metal hydraxide, M(OH)2. contains 32.8% oxygen by mass. What is the identity of the metal…

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Q: 4. A 1.628-g sample of a hydrate of magnesium iodide is heated until its mass is reduced to 1.072 g…

A: Answer :- MgI2.8H2O The formula of given Hydrated Magnesium iodide = MgI2.8H2O…

Q: A sugar crystal contains approximately 1.8x1017 sucrose (C12H22O11) molecules. What is its mass in…

A:

Q: In using a mass spectrometer, a chemist sees a peak at a mass of 30.0106 AMU. Of the choices 12C2…

A:

Q: And iron ore contains 58.0% iron oxide. Iron constitute 70.0% of iron oxide. How much iron is there…

A: Given, an iron contains 58.0% of iron oxide which means 100 g of iron ore contain 58 g of iron…

Q: In chemistry, what is meant by the term “mole?” What is the importance of the mole concept

A: Mole is a unit to  express the mass, Number and volume of a Substance in Chemistry.  It is a bigger…

Q: A 67.2-g sample of a gold and palladium alloy contains 2.49x10^23 atoms. What is the composition (by…

A:

Q: 127: An iron ore contains 38% Fe203 by mass. What is the maximum mass of iron that can be recovered…

A: 127. Given information, An iron re contains 38% Fe2O3 by mass Mass of iron ore = 10.0 kg

Q: Calculate the percent by mass of nitrogen in ammonium carbonate,(NH)2CO3 A 27.8% в) 33.3 % c) 17.1%…

A: The mass percentage is determined as the summation of total mass of the element upon molar mass of…

Q: Sodium and nitrogen form two different binary compounds. The percentages in the two compounds are:…

A: a) Step 1: Conversion of mass % to grams. Assume the weight of the compound is 100 g. Thus, in 100 g…

Q: A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in anhydrous cobalt (II) sulfite…

A: We have given that   A 43.0 g sample of hydrated cobalt (II) sulfite is heated resulting in…

Q: What is the mass of 4.12 x 10^23 water molecules?

A: The number of water molecules is = 4.12×1023 molecules The mass of these molecules is =?

Q: A sulfide of iron is produced when 2.33 g of iron reacts with 1.926 g of sulfur. What is the…

A: Empirical formula of a compound represents the simplest whole number ratio of the moles of the…

Q: Monel metal is a corrosion-resistant copper-nickel alloy used in the electronics industry. A…

A: Given data is: Length of plate = 15.0 cm Width of the plate = 12.5 cm Thickness of plate = 3.00 mm…

Q: Upon heating, a 2.500 g sample of hydrated magnesium chlorate, Mg(ClO3)2 loses 0.903 g of water.…

A: A numerical problem based on determination of number of hydration, which is to be accomplished.

Q: Bituminous coal is a type of coal that is composed of carbon with small amounts of hydrogen, oxygen,…

A: Chemical formula of Bituminous coal is C137H97O9NS Molar mass of Bituminous coal…

Q: 2.845 x 1012 potassium ions equals how many moles of potassium ions?

A: 1 mol of potassium ions equal 6.022 ×1023ions    16.022×1023moles of potassium ions equal 1 ion

Q: You are given 1.0g samples of Iron (Fe), Silicon (Si), and Lithium (Li). Which of the three samples…

A: Applying mole concept and avogadro concept.

Q: The molecular formula of hexakis(methylthio)benzene is C12H18S6. What is the percentage (by mass) of…

A: We have to calculate the % by mass of C in hexakis(methylthio)benzene .

Q: こう+ 5に 8 d) NaN3 2 3 +42 =65 E. Al(UH)3 . CHAN,O, 36+ 5t42+ 144こ 247 3. A compound formed from…

A: Given  % of Si = 23.2 %  % of P = 100 - 23.2 = 76.8 %

Q: One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows…

A: Given: 26.3% Mg, 20.2% Si, 1.45% H   Let mass of compound be 100 g. then it contain 26.3 g of Mg,…

Q: 6. The mineral enargite is 48.42 % Copper. 19.02 % arsenic and 32.57% sulfur by mass. What is the…

A:

Q: What is the mass percent of chlorine in NH4Cl?

A: First, find the total mass of NH4Cl.NH4Cl = 54g/mol

Q: Part B A laboratory analysis of vanillin, the flavoring agent in vanilla, indicates that its mass…

A: A laboratory analysis of vanillin, the flavouring agent in vanilla, indicates that its mass percent…

Q: From this data, what empirical formula of magnesium oxide.

A: Mass of oxygen added = 35.1556 - 35.0079 g Mass of Oxygen = 0.1477 g Moles of oxygen = mass / molar…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.