04:02What Is Avogadro's Number - The Mole | Chemical Calculations | Chemistry | FuseSchoolFuseSchool - Global Education424views1rank
06:00Concept of Mole | Avogadro's Number | Atoms and Molecules | Don't MemoriseDon't Memorise751views1rank
Multiple ChoiceIf a sample of sodium chloride, NaCl, contains 73.1 kg, what is its number of formula units?1344views10rank1comments
Multiple ChoiceCalculate the number of oxygen atoms found in 783.9 g NiCl2 • 6 H2O.1269views8rank3comments
Multiple ChoiceIf the density of water is 1.00 g/mL at 25°C, calculate the number of water molecules found in 1.50 x 103 µL of water.1384views4rank3comments
Multiple ChoiceA cylindrical copper wire is used for the fences around a house. The copper wire has a diameter of 0.0750 in. How many copper atoms are found in 5.160 cm piece? The density of copper is 8.96 g/cm3. (V = π • r2 • h)834views14rank