An oxide of chromium is found to have the following % composition: 68.4 % Cr and 31.6 % O. Determine this compound's empirical formula. The percent composition of a compound was found to be 63.5 % silver, 8.2 % nitrogen, and 28.3 % oxygen. Determine the compound’'s empirical formula.

Q: empirical formula

A:

Q: Complete the table. Element Moles Mass Cr 0.00442 Fe 73.5 mg Ti 1.009 x 10-3 Hg 1.78 kg

A: Mole is represented by the symbol mol. It is unit of measurement of substance. Mass is defined as…

Q: CxHyOz

A:

Q: A compound consisting of B, N, and H undergoes elemental analysis. The % composition by mass is…

A: Given,Percent of B in the compound = 40.28 %Percent of N in the compound = 52.20 %Percent of H in…

Q: The percent composition by mass of an unknown compound with a molecular mass of 120.104 u is 40.002%…

A: Given ; percentage of atoms

Q: Determine the empirical formula of a compound having the following elemental analysis: 52.2% C;…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The amino acid arginine has an approximate molar mass of 174 g/mole. If the percent composition is…

A:

Q: Complete the Avogadro's Statement for the element hydrogen: 1 mole of hydrogen hydrogen atoms =…

A: A mole is defined as that amount of the substance which has mass equal to gram atomic mass if the…

Q: Dimethyl sulfoxide (DMSO) is a liniment for horses and has been used in the treatment of arthritis…

A:

Q: Calculations involving Mass (e) The percentage of a particular element in a compound can be…

A: Given, mass of NaCl sample = 18.50 g mass of sodium (Na) in the sample = 7.28 g % composition of…

Q: A 50.00 g sample of an organic compound containing only C, H and O is analyzed by combustion…

A: The objective of the question is to determine the empirical formula of the organic compound…

Q: What is the elemental composition of mercury(I) nitrate, Hg2(NO3)2? Report the mass percent of each…

A: Answer:- This question is answered by using the simple concept of calculation of percent of each…

Q: Calculate the molar masses of the following molecules. Include the units. Use 4 significant figures.…

A:

Q: A 2.86 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

A: Given, mass of 2.86 g sample of a compound produced 1.61 g CO2 and 0.989 g H2O.Moles of CO2 and H2O…

Q: D. Calculate the mass (g) of the following samples. 25) 238 moles of lead 26) 1.54 x 10° moles of Zn…

A: Since you have posted question with multiple sub-parts, we are entitled to answer the first 3 only.…

Q: Determine the molecular formula of the compound with an empirical formula of CH and a molar mass of…

A: Given:- Determine the molecular formula of the compound with an empirical formula of CH and a molar…

Q: Determine the empirical formula of the compound according to its elemental analysis: 38.13% C by…

A:

Q: Combustion analysis of a compound yields: C 78.52%, H 8.39%, N 8.33%, and O 4.76%. Determine the…

A:

Q: A sample of NH3 has a mass of 84.06 grams.   Calculate the moles of NH3 in the sample.…

A: Given : Mass of NH3 = 84.06 g

Q: Elemental analysis of Measurements show that unknown compound X has the following composition: 0…

A: An unknown compound X has the following composition,Element mass % masscarbon (C)74.8% 74.8…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A:

Q: A 15.2415.24 g sample of a compound contains 9.739.73 g of iron, Fe,Fe, 1.801.80 g of phosphorus,…

A:

Q: Complete the percent composition for the atoms in Na₂O. All answers are numbers. Use no units. Atom…

A: The compound given is Na2O Element molar mass of sodium = 23.0 g/mol  Element molar mass of oxygen=…

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Avogadro’s number is defined as   the number of atoms in exactly 12 g of carbon-12. the number of…

A: Which one of the following is correct

Q: a compound contains only hydrogen, carbon, and oxygen. combustion of 10.68mg of the compound…

A: The combustion reaction of given compound and its masses are shown below,

Q: A binary compound of carbon and hydrogen has the following percentage composition: 82. 66% carbon,…

A: Given a binary compound of carbon and hydrogen. Carbon % = 82.66 %Hydrogen % = 17.34 %

Q: A certain chemical substance has the following percent composition by mass. Element Mass Percent…

A: Supose we have 100 g of given compound   therefore mass of C = 43.45 g  mass of H = 8.02 g  mass of…

Q: A compound contains 28.2% nitrogen, 20.8% phosphorous, 8.10% hydrogen, and 42.9% oxygen. Determine…

A: The elements present in the compounds are nitrogen, phosphorous, hydrogen and oxygen. Let the…

Q: A compound has the following elemental analysis: Element % composition C 48.65 H 8.11 O 43.24…

A: Element %  of  C = 48.65 % = 48.65 gElement %  of  H = 8.11 % = 8.11 gElement %  of  O = 43.24 % =…

Q: compound x has a molar mass of 266.64 g x mol ^-1 and the following composition: element:…

A: Solutions - Given - molar mass compound  X is = 266.64 g/mol-1 Mass percentage of aluminium is =…

Q: Determine the empirical s K: 24.74%; Mn: 34.76%; O: 40.50%

A: Empirical formula is simplest formula

Q: Use the References to access important values If needed for this question. For the molecular…

A: In this question we have to convert mole into molecule by some multiply.

Q: FORMULAS FROM PERCENT COMPOSITION: 8. %Zn = 11.44%; %U = 41.64; %C = 16.81%; %H = 2.12%; %O = 27.9

A:

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.