7.00 g of iron is reacted with 3.00 g of oxygen. Find the empirical formula.

Q: 3. In determining the simplest formula of lead sulfide, 2.46grams of lead are placed in a crucible…

A: The mass of the lead is 2.46 g.The mass of the product is 3.22 g.

Q: How many K atoms are present in 3.48 g of KOH formula units? Express your answer in scientific…

A: In order to find the number of potassium atoms present we first write down the given data: Mass of…

Q: 9. A 1.35 g sample of a substance containing carbon, hydrogen, nitrogen, and oxygen was burned to…

A: Total weight of the substance is 1.35 g The compound consists of C,H,O & N. Amount of H2O =…

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

A:

Q: 8. Convert 37.482 g of N₂O4 to nitrogen atoms.

A: In one mole of any substance there are 6.023 * 1023 number of entities present.

Q: Consider a sample of aluminum nitrate that contains 1.72 × 10²⁴ atoms of nitrogen. Determine What…

A:

Q: A 5.91 g unknown sample analyzed by elemental analysis revealed a composition of 37.51 % C. In…

A: Given A 5.91 g unknown sample analyzed by elemental analysis revealed a composition of 37.51 % C. In…

Q: An unknown compound contains only C, H, and O. Combustion of 6.80 g of this compound produced 15.5 g…

A: Let the empirical formula of the compound is CxHyOz CxHyOz +O2 -----------> CO2+H2O  Mass of the…

Q: 1.651 g of Silver is combined with 0.1224 g of oxygen. Find the empirical formula.

A: moles of silver combining = mass / atomic mass atomic mass of Ag = 108 g/mol Hence moles of Silver =…

Q: Vehicle air bags require that a very specific amount of gas is created so that the gas inflates the…

A:

Q: Chemical analysis of a asprin tablet determined that it was composed of 57.7% carbon, 37.5% oxygen…

A:

Q: If 5.3 g of hydrogen gas is reacted with 12.6 g of oxygen gas to produce water, the hydrogen is the…

A: Chemical reaction: 2 H2 + O2 ---> 2 H2O  Mass of H2 = 5.3 g Mass of O2 = 12.6 g Molar mass of H2…

Q: If 2.000 g tungsten is reacted with 0.092 mL of 12.5 M sodium hydroxide and 0.092 mL of water, how…

A: Given: mass of tungsten (W) = 2.000 g Volume of NaOH = 0.092 mL Concentration of NaOH = 12.5 M…

Q: A compound contains 21.20% nitrogen, 6.06% hydrogen, 48.45% oxygen and sulfur. Write the empirical…

A: Given, Percent of nitrogen in the compound = 21.20 % Percent of hydrogen in the compound = 6.06 %…

Q: An impure sample of table salt (NaCl) that was dissolved in water and treated with silver nitrate to…

A: Mass of the impure sample = 1.741 g  Mass of AgCl formed = 4.084 g

Q: A gas leak was detected in an apartment building and the resulting gas was analyzed. A sample was…

A: mass of nitrogen = 1.54 g mass of hydrogen = 0.332 g Empirical formula = ? Note: molar mass of N =…

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: A 1.71 mg sample of copper reacts with oxygen to form 1.93 mg of a copper oxide compound, CuxOy.…

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.