![]() Express your answer to five significant figures. View Available Hint(s) ΟΙ ΑΣΦ ? Molar mass = g/mol SubmitĬalculate the molar mass of norepinephrine (C H11NO3), a hormone that helps increase blood pressure by stimulating blood vessels to constrict. The molar mass of Cul, is 317.35 g/mol 239.31 g/mol 366.21 g/molĬalculate the molar mass for Mn207, an oxide of manganese. The molar mass of Bel2 is 293.88 g/mol 4. The molar mass of CdI2 is 262.81 g/mol 190.45 g/mol 3. The molar mass of Calz is 166.98 g/mol 2. View Available Hint(s) Reset Help 135.91 g/mol 1. Make certain each sentence is complete before submitting your answer. Element Molar mass (g/mol) 9.012 40.08 Beryllium (Be) Calcium (Ca) Copper (Cu) Cadmium (Cd) lodine (I) 63.55 112.41 126.90 Match the numbers to the appropriate blanks in the sentences below. Molar mass CO2 = 12.01 g + (2 x 16.00 g) = 44.01 g Grams CO2 = 0.6804 mol CO2 x (44.01 g/1 mol) = 29.Transcribed image text: Given the atomic mass of select elements, calculate the molar mass of each salt. Molar mass C3H8 = (3 x 12.01 g) + (8 x 1.008 g) = 44.094 g Mol C3H8 = 10.0g x (1 mol/44.094 g) = 0.2268 mol 3. Moles are the currency of chemistry 1 mole 6.02 x 10 23 particles Avogadro’s number Molar mass of an element mass of one mole of that element Molar mass atomic mass of element in grams - Average mass of one atom of C 12.01 amu. Have grams C3H8, want grams CO2 (g C3H8 mol C3H8 mol CO2 g CO2) 2. Mole Relationships and Mass Calculations Example: C3H8 + 5O2 3CO2 + 4H2O How many grams of CO2 are produced when 10.0 g of C3H8 are consumed? 1. Example: For C3H8 + 5O2 3CO2 + 4H2O How many moles of O2 are needed to produce 2.0 moles of H2O?.Using chemical formulas, molar masses and mole ratios (from balanced chemical equation), amounts of products and reactants can be calculated.Atoms, moles and mass are conserved in a chemical reaction (shown in balanced equation).Mole Relationships and Mole Calculations Can calculate empirical formula from masses or from % composition by mass.Example: empirical formula for glucose = CH2O molecular formula = C6H12O6.Molecular formula = multiple of empirical formula.Empirical formulas give the lowest whole-number ratio of atoms in a compound.Using molar mass, you can calculate the % by mass of each element in a compound.Molecular formula tells you how many moles of each type of atom are in one mole of a compound.Quantities of reactants and products are measured by mass (grams) in the lab, but we use moles to balance equations.Chemical equations are balanced with atoms, and moles are an extension of that (they also balance).Molar mass is used to convert between moles and grams of a substance.as given in the atomic masses (don’t round molar masses to 1/10 of a gram) Example: What is the molar mass of MgCl2? Molar mass of Mg = 24.31 g, Molar mass of Cl = 35.45 g Molar mass of MgCl2 = 24.31 g + (2 x 35.45 g) = 95.21 g.Molar mass of a compound = sum of molar masses of each atom in the compound.In this case the molecular mass of the gas (80) is greater than the. Molar mass = atomic mass of element in grams - Average mass of one atom of C = 12.01 amu - Average mass of one mole of C = 12.01 g By Graham’s diffusion law The rate of diffusion of different gases under similar conditions of temperature and pressure are inversely proportional to square root of their densities.It is the bridging quantity that connects the pair of physical quantities amount of substance and mass: M. MOLAR MASS (M) is defined as the mass (m) per unit amount of substance (n), i.e., per mole, e.g., M (U) 238 g/mol. Molar mass of an element = mass of one mole of that element Molar Masses of the Elements ELEMENT CHEMICAL ATOMIC MOLAR ELEMENT CHEMICAL ATOMIC MOLAR NAME SYMBOL NUMBER MASS NAME SYMBOL NUMBER MASS Actinium Ac 89 (227) Mendelevium Md 101 (258) Aluminum Al 13 26. This term applies to ALL entities including elements in the atomic state.1 mole = 6.02 x 1023 particles = Avogadro’s number.
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