A chromium-containing compound has the formula Fe,Cr,O, and is 28.59% oxygen by mass. Findx and y.

Q: A 0.370-mol sample of a metal oxide (M₂O₃) weighs 55.4 g.(a) How many moles of O are in the…

A: Mass of 0.37 mole of metal oxide = 55.4 g. Mass of one mole of metal oxide = Molar mass of the metal…

Q: A tube of Thothpaste contains 0.76 g of sodium monofluorphosphate (Na2PO3F) in 100 mL. a)what mass…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: What is the molecular formula of each compound? a. empirical formula CH (MM = 78.11 g/mol) b.…

A: we are required to find the molecular formula for each of the given empirical formula

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

A: Given,

Q: 3.135 A certain metal M forms a bromide containing 53.79percent Br by mass. What is the chemical…

A: Let the mass of the compound be 100 g. Then the mass of the Br is 53.79. Calculate the mass of the…

Q: A rock is 5.0% by mass fayalite (Fe₂SiO₄), 7.0% by massforsterite (Mg₂SiO₄), and the remainder…

A:

Q: Q;) a compound is found to contain 40 % carbon, 6.7 % hydrogen, and 53 % oxygen by weight. What is…

A: Answer:- this question is answered by using the simple concept of calculation of epirical formula…

Q: A 2.45-g sample of strontium completely reacts withoxygen to form 2.89 g of strontium oxide. Use…

A:

Q: Calculate the molar mass of iron(II) ammonium sulfate hexahydrate, (NH,),Fe(SO4),•6H,O(s).

A:

Q: wnat is the empiracle formula og Compound that is 62.07. C, 10.47 and 27.5%. 0 by mass ?

A: C = 62.0 % H = 10.4 %  O = 27.5 %

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: 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. calcium oxide b. potassium chloride c. mercury(I) oxide d. zinc fluoride e. barium hydroxide f.…

A: Note: As per our guidelines, we are supposed to answer only the first question (i.e. exercise 1).…

Q: Consider a sample of calcium carbonate in the form of a cubemeasuring 2.005 in. on each edge. If the…

A: Given: Edge length of the cube(Calcium carbonate) =2.005 inch Density of sample= 2.71 g/cm3 To…

Q: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

A: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

Q: Find the percentage of mass of sodium (Na) in Na2s if it is 32.1%  sulfur (s) by mass.

A: The percentage of mass of an element in a compound is calculated by the formula,

Q: 1. Determine the Molecular Mass of the following compound: NH,C,H,O,

A: Dear student I have given answer to your question in the image format.

Q: What is the empirical formula (Na?S?O?) for a pure compound consisting of 29.1% sodium, 40.6%…

A: Empirical formula is represents the simplest ratio of atom in a compound.

Q: How many carbon atoms are present in a 13.5 g sample of this compound? A compound is composed of…

A:

Q: Br A) What is the molecular formula for this compound? B) What is the empirical formula for this…

A: A Molecular formula  represent the total number of atoms of each element in each molecule of a…

Q: 3.01 x 1023 molecules of freon CCl,F,? 1.505 x 1024 molecules of sucrose C12H2201 1.806 x 1024…

A: One mole of any substance contains 6.023 x 1023 Molecules, ions , atoms.

Q: a. You have 1.893x10²º molecules of chromium (III) phosphate. i There are ii. There are ii. There…

A: Given: Molecules of chromium (III) phosphate = 1.893×1029 molecules Known: Molar mass of CrPO4 =…

Q: Some of the formulas could be either molecular or empirical formulas; however, some can only be…

A: Which are among is the molecular formula ?

Q: calulate the mass percent of magnesium (Mg) in magnesium nitride (Mg3N2)

A: Mass percentage of an element can be calculated by the division of mass of the element by the total…

Q: 1. A 4.00g sample of iodine was reacted completely with excess bromine. The mass of the compound…

A: We have to predict the empirical formula of compound.

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: When aluminum metal is heated with an unknown element from group 6A (O, S, Se, Te) an ionic compound…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: An 85.00 g sample of an unknown compound contains 24.26 g molybdenum, 24.33 g sulfur, and the rest…

A: Given,  Mass of the compound = 85.00 g  Mass of molybdenum = 24.26 g  Mass of sulfur = 24.33 g  Mass…

Q: Calculate the formula mass of magnesium iodite, Mg(I0,),, in atomic mass units (amu or u). formula…

A: The sum of all mass of all atoms in the empirical formula of the compound is known as Formula mass…

Q: A molecule is found to contain 64.27% by mass C, 7.191% by mass H, and 28.54% by mass O. It’s molar…

A: The given organic compound is made up of C, H and O atoms.  Molar mass of the given compound is 168…

Q: Calculate the mass percent of H in C,HgO.

A: Since, molar mass of carbon = 12.0107 g/mol Molar mass of hydrogen = 1.0079 g/mol Molar mass of…

Q: Calculate the mass in grams of 14 atoms of Ca.

A:

Q: If 10 magnesium (Mg) atoms and 10 chlorine (Cl) atoms bump into eaxh othee, could they form a…

A:

Q: What is the formula mass for a compound? Why is it useful?

A: The formula mass is defined as the summation of the average atomic masses of each atom that is…

Q: The compound adrenaline contains 59.00% C, 7.15% H, 26.20% O, and 7.65% N by mass. What is the…

A:

Q: bone Titanium metal is usefuu as a heplacement matenial. Delemine the mass in grams o625.5 moles 06…

A: The moles of a compound can be calculated as follows: Moles of compound=Mass of compoundMolar mass…

Q: Calculate the mass percent of 0 in ClO,F.

A: Given compound is ClO3F  Molar mass of Cl = 35.5 g/mol  Molar mass of O = 16 g/mol  Molar mass of F…

Q: Determine the mass percent STRONTIUM in SrNO3) Be sure to 'shouw a formula. Show Molar Mass…

A: Mass percent is the ratio of mass of that element to that of the molar mass of molecule.

Q: 3. Consider the equ: Moles: C8H14 Masses: C8H14

A: First convert mass into mole by dividing molarity mass of H2O  Then use mole-mole relationship…

Q: Calculate the mass % of O in lithium permanganate.

A: Mass percentage is the term used to calculate the concentration of any element in the given…

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: theoretical yield of chemical formulas

A: The theoretical yield is the amount predicted by a stoichiometric calculation based on the number of…

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

A: Given: Percent by mass of CO32- ions in sample = 69.14 %

Q: The mass in grams of iodine in a sample of BaI 2 that contains 15.7 grams of barium is

A: The moles of Barium ion is calculated as follows,

Q: Consider a 3.55 g sample of C4H10. How many atoms of C would be in this sample?

A: Molar mass of C4H10  = 58 g/ mol Fraction of  C = 48/58 = 0.8276

Q: How many atoms of chlorine (CI) are present in 0.072 g of FeCI,? Given that ; Fe= 56 g /mol, Cl=…

A: Given that mass of FeCl = 0.072 g Molar mass of Fe = 56 g/mol, Cl = 35.5 g /mol Hence, molar mass of…

Q: how many molecules of nitrgoen, N2 are found in 78.2g of N2? The atomic mass of nitrogen is…

A:

Q: A 0.415 mol sample of MnX2O7 has mass of 85.14g identify X indicating the symbol and not the name of…

A:

Q: what is the empirical formula of a compound that is 28.03% Mg, 21.60% Si, 1.16% H, and 49.21% O?…

A: Given :-  percent composition of Mg = 28.03% percent composition of Si = 21.60% percent composition…