Webempirical formula = Cr2O3 22. A 2.56-g sample of Cu is placed in a container with excess S. The mixture is heated until all of the copper reacts and the excess sulfur is burned off. The new compound weighs 3.85 g. What is the empirical formula of the new compound? mass Cu = 2.56 g mass S = mass cmpd - mass Cu = 3.85 g - 2.56 g = 1.29 g S WebFormula:NaBr Enter a chemical formula to calculate molar mass,The molar mass calculator can be used in Chemical industry and medicine industry. Home Add to …
Chemistry 105 Exam 2 Homework-Monte Helm Flashcards …
WebThe formula mass (formula weight) of a molecule is the sum of the atomic weights of the atoms in its empirical formula. The molecular mass (molecular weight) of a molecule is … WebThe molar mass of a compound tells you the mass of 1 mole of that substance. In other words, it tells you the number of grams per mole of a compound. The units for molar mass are, therefore, grams/mole. To find the molar mass of a compound: 1. Use the chemical formula to determine the number of each type of atom present in the compound. 2. iphone se straight talk
What mass of "NaBr" is needed to prepare "50.00 mL" of a 6.5
WebExpert Answer. Answer : Mass of NaBr produced = 913 g …. The chemical formula for sodium bromide is NaBr. A chemist measured the amount of sodium bromide produced during an experiment. She finds that 913. g of sodium bromide is produced. Calculate the number of moles of sodium bromide produced. Round your answer to 3 significant digits. … WebAt a certain temperature, the vapor pressure of pure benzene (C6H6) is 0.930 atm. A solution was prepared by dissolving 10.0 g of a nondissociating, nonvolatile solute in 78.11 g of benzene at that temperature. The vapor pressure of the solution was found to be 0.900 atm. Assuming the solution behaves ideally, determine the molar mass of the ... WebThe formula mass (formula weight) of a molecule is the sum of the atomic weights of the atoms in its empirical formula. The molecular mass (molecular weight) of a molecule is its average mass as calculated by adding together the atomic weights of the atoms in the molecular formula. ... Step 1: Calculate the molar mass of NaBr. molar mass = (22. ... iphone se stand for