One mole of a substance has a mass （equals）_to its relative formula mass in grams, contains （identical) atoms, molecules or formula units.
Sign inThis problem has been solved! You'll get a detailed solution that helps you learn core concepts.See AnswerQuestion: How many nanograms does one mole of electrons weigh? How many nanograms does one mole of electrons weigh?Here’s the best way to solve it. Solution Share ...
What is the enthalpy for the following reversed reaction: CO2---> CO + 1/2O2 Answer must be in kilojoules per mole. ?H=??? Calculate the change in the enthalpy of combustion for the combustion of CO to CO_2 at (a) 298 K (b) 1470 K. ...
Suppose the mass of one mole of a substance is 45.0 grams. How many moles of the substance are present in 0.568 grams of the sample? How many moles of N2 has a mass of 130.10 grams? The ___ of a substance is the mass (in grams) of 1 mole ...
Finally, add together the total mass of each element to get the molar mass of C21H30O3: 252.2247 g/mol + 30.2382 g/mol + 47.9982 g/mol = 330.4611 g/mol 5. Find Mole Fraction To find the mole fraction and percentage of each element in C21H30O3, divide each total from step 3 by th...
Ordinary Portland cement (OPC) contributes significantly to the global CO2 emissions: in 2016, the estimated value was 1.45 ± 0.20 Gt CO2, that is, approximately 8% of the total anthropogenic CO2 release [1]. Although the cement industry has been able to improve energy efficiency significantly...