Domanda apertaCalculate the mass of 25,000 molecules of nitrogen gas. (1 mole = 6.02 x 1023 molecules)1686views
Domanda apertaOne atom of gold weighs 3.27 x 10-13 ng. how many gold atoms are in 1.0 g of gold?1437views
Domanda apertaA rigid vessel contains 2.5 mol of H2(g). How many grams of hydrogen are in the vessel?1256views
Domanda del libro di testo(a) Write 'true' or 'false' for each statement. (a) A mole of horses contain a mole of horse legs.16views
Domanda del libro di testoA gold sample contains 4.65×1024 gold atoms. How many moles of gold does the sample contain?