The mass and molarity of chemical compounds can be calculated based on the molar mass of the compound. Bromine liquid is Br2 (l). It will calculate the total mass along with the elemental composition and mass of each element in the compound. It means that 12 grams per mole. We know that the molar mass of 1 mole of carbon is equal to 12. grams = Moles times mass per mole. Adding the atomic wts in Br2 gets 160 so one mole of Br2 weighs 160 grams. Because the molar volume is the same for all ideal gases and is known, we can convert from grams to liters and vice versa if we know formula of a gas. And the most difficult task here is finding out the molar mass of the substance. Moles = .5 Molar times .004 liters = .002 moles of Br2. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). These are steps to convert from grams of a gas to liters of a gas: find the molar mass from formula; find moles by dividing given mass to molar mass Read our article on how to calculate molar ⦠- molar mass of the substance in grams/mole. The number of atoms in one mole of any substance is defined as the Avogadro's number and is ⦠(a) How many grams of bromine were consumed? grams = 58.443 × 5 = ⦠So, the conversion of carbon from grams to atoms is given by = 10(1/12)( 6.02 x 10 23) = 5.02 x 10 23 The molar mass of atoms of an element is ⦠(b) How many grams of aluminum bromide were produced? Suppose you have 10 gram of carbon. grams Br2 = .002 moles times l60 grams per mole = .32 grams Example #9: Aluminum foil 1.00 cm square and 0.540 mm thick react with bromine to form aluminum bromide. This converts atomic units to grams per mole, making the molar mass of hydrogen 1.007 grams per mole, of carbon 12.0107 grams per mole, of oxygen 15.9994 grams per mole, and of chlorine 35.453 grams ⦠So you go: (0.226 J/ g K) *(159.81 g/mol) = 36.12 J/ mol K. E.g. The mass (in grams) of a compound is equal to its molarity (in moles) multiply its molar mass: grams = mole × molar mass. Now, it should be converted in terms of atoms. Also, the Avogadro constant is 6.02 x 10 23. Solution: 1) Let us determine the mass, then moles, of Al present: volume of Al foil ---> (1.00 cm) (1.00 cm) ⦠Bromine (Br) has a molar mass of 79.904 amu (atomic mass units), which is extremely close to 80. Definitions of molecular mass, molecular weight, molar mass and molar weight. Definitions of molecular mass, molecular weight, molar mass and molar weight. Finding Molar Mass. Molar mass of NaCl is 58.443, how many grams is 5 mole NaCl? The molar mass is a physical property defined as the mass of a given substance (chemical element or chemical compound) divided by the amount of substance. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a ⦠All you have to do is convert grams to moles, basically. Molar mass of Br2 is 159.81 g/mol. Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). Multiply the relative atomic mass by the molar mass constant. The molar mass of bromine is 79.90 g/mol. Use uppercase for the first character in the element and lowercase for the second character. (1 u is equal to 1/12 the mass of one atom of carbon-12) Molar mass (molar weight) is the mass of one mole of a ⦠This is defined as 0.001 kilogram per mole, or 1 gram per mole. Examples: Fe, Au, Co, Br, C, O, N, F. You can use parenthesis or brackets []. 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