An unknown powder has been found at a crime scene. It is your job to identify the chemical formula for the substance and its common or generic name by searching the internet. Preliminary tests reveal that the possible elements that can be in the material are carbon, hydrogen, oxygen and nitrogen. Complete combustion of a 0.695 g sample of the unknown powder with excess O2 produced 1.2387 g of CO2, 0.5072 g of H2O, and 0 g N2. The molar mass of the substance was found to be about 222 g/mol.

Q: 26. Determine the simplest formula for a hydrocarbon if the complete combustion of a sample produces…

A: 3.96g of CO2 is there.  2.16g of H2O is there.  Molar mass of C = 12g/mol Molar mass of O = 16g/mol…

Q: Consider the reaction of solid P4 and chlorine gas to form gaseous phosphorus trichloride. a) Write…

A:

Q: answer the following questions that relate to the analysis of chemical compounds. a) A compound…

A: Explanation Some organic compound like alkanes are completely oxidised by air on heating to give…

Q: A sealed chamber contains 7.50 g CH4 and 14.5 g O2. The mixture is ignited producing CO2 and H2O.…

A: According to the balanced chemical reaction shown as follows:

Q: 4. A sample containing 58.51 g manganese (Mn) is treated with an excess of sulfuric acid (H2SO4)…

A:

Q: Determine the simplest formula for a hydrocarbon if the complete combustion of a sample produces…

A: Given: The mass of CO2 (carbon dioxide) is 3.96 g The mass of H2O (water) is 2.16 g The molar mass…

Q: In a combustion analysis experiment, an unknown hydrocarbon produced 154.47861 g of carbon dioxide…

A: Empirical formula represents the smallest whole number ratio of the atoms present in the organic…

Q: An Unknown compound contains only carbon, hydrogen, nitrogen, and oxygen (C, H, N, & O). Complete…

A: Given: Mass of compound burned = 2.478 g. Mass of CO2 produced = 5.943 g. Mass of H2O produced =…

Q: ) A compound containing the elements C, H, N, and O is analyzed. When a 1.2359g sample is burned in…

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

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A: Given data :

Q: A 1.500 g sample of a mixture containing only Cu,O and CuO was treated with EXAMPLE B: hydrogen to…

A: Mass of mixture (Cu2O + CuO) = 1.5 gm Pure copper mass = 1.2244 gm The reaction of mixture with…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A:

Q: 3. Combustion Analysis: A sample of a blue crystal was found at an industrial laundry facility…

A: Given the combustion of 0.6250 g of the sample in presence of excess O2 gives 1.8546 g CO2(g) and…

Q: A compound containing the elements C , H , N , and O is analyzed. When a 1.2359 g sample is burned…

A: Given L The compound contains elements C, H, N and O only. Mass of compound = 1.2359 g Mass of H in…

Q: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

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

A: Given: Mass of sample = 1.000 g Mass of CO2 formed = 2.579 g Mass of H₂O formed = 0.6536 g Molar…

Q: A sample containing only carbon,hydrogen,phosphorus and oxygen is subjected to elemental analysis.…

A:

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

A:

Q: A Chemistry 20 student uses a thermometer and a hot plate and measures the boiling point of ethyl…

A:

Q: Cinnabar (HgS) is the ore of mercury metal (Hg). When reacted in a smelter with gaseous oxygen (O2),…

A: Given   Mass of cinnabar is 1.00 kg. Yield of product is 100 %.

Q: An unknown hydrocarbon contains carbon, hydrogen, and oxygen. Combustion of 1.5000g of the…

A:

Q: A compund is composed of only C, H, O. The combustion of a 0.519g sample of the compound yields 1.24…

A: Given details, The mass of compound = 0.519 g The mass of CO2 = 1.24 g The mass of H2O = 0.255. To…

Q: Complete combustion of 4.5892 a particular compound that contains only carbon, hydrogen and oxygen…

A:

Q: Naphthalene, the active ingredient in one variety of mothballs, is an organic compound that contains…

A: Given, mass of naphthalene is 20.10 mg            Mass of CO2 formed =69 mg            Mass of H2O…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A: Combustion of hydrocarbons in presence of oxygen proudces water and carbon dioxide. If the  oxygen…

Q: Complete combustion of a 0.500 g sample of a pure hydrocarbon yielded 0.973 g CO 2 and 0.319 g H 2O.…

A:

Q: GIVE THE BALANCED CHEMICAL EQUATION FOR THE FOLLOWING REACTIONS: 1. WHEN SOLID ALUMINUM BROMIDE…

A: The reaction takes place as  2AlBr3(s) + 3Cl2(g)---------> 2AlCl3(s) + 3Br2(l)  Now here we can…

Q: Elemental analysis is sometimes carried out by combustion of the sample. For a hydrocarbon, the…

A:

Q: The compound phthalic acid consists of carbon, hydrogen, and oxygen. When a 1.969 g sample of…

A:

Q: Naphthalene, the active ingredient in one variety of mothballs, is an organic compound that contains…

A: Given, Mass of CO2 = 69.00mg Mass of H2O = 11.30mg Mass of naphthalene = 20.10mg

Q: A 1.038 g sample of unknown containing C, H, and O yielded 2.48 g of CO2 and 0.510 g of H2O during…

A: The empirical formula of a chemical compound is the simplest whole number ratio of atoms present in…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A:

Q: Complete combustion of 5.905.90 g of a hydrocarbon produced 19.219.2 g of CO2 and 5.895.89 g of H2O.…

A: Given, Mass of hydrocarbon (CnHn) = 5.90 g Mass of CO2 = 19.2 g Mass of H2O = 5.89 g

Q: Balance and complete the following combustion reaction. Enter the sum of the balanced coefficients…

A: Chemical reactions are those reactions which undergo any chemical change. Chemical reaction is…

Q: Balance and complete the following combustion reaction. Enter the sum of the balanced coefficients…

A: Reactions in which the number of atoms of the reactants and the products are equal or is balanced is…

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".