Zadanie 1b
A sample of 0.296 g of a volatile organic liquid, Y, was vaporized completely at 87.0 °C and 100.0 kPa. The volume of the vapour was 123 cm3. Determine the molar mass of Y.
Wczytuję zadania…
Zapisujemy na Twoim urządzeniu to, bez czego serwis nie działa, np. zalogowanie. Plików analitycznych użyjemy tylko za Twoją zgodą. Szczegóły w polityce prywatności.
Wybierz umiejętność, rok lub poziom trudności.
Pokazujemy tylko poziomy, dla których mamy zadania.
Znaleziono 1476 zadań
A sample of 0.296 g of a volatile organic liquid, Y, was vaporized completely at 87.0 °C and 100.0 kPa. The volume of the vapour was 123 cm3. Determine the molar mass of Y.
Outline why a large number of the elements in the table have atomic volumes above 10 000 cm3 mol−1.
Outline why some of these elements have atomic volumes close to 11 350 cm3 mol−1 while others have values close to 22 700 cm3 mol−1.
Phosphorus and oxygen each have a second value in the last column of the table. Suggest why a single element can have two different atomic volumes.
Explain the steady fall in atomic volume from element 11 to element 13.
Estimate the atomic volume, in cm3 mol−1, of element 20.
Suggest, giving one reason, whether the volume of a single atom could ever be known exactly.
Magnesium ribbon of known mass was heated strongly in a crucible, and the heating was repeated until the mass no longer changed. The final mass of the solid was then recorded. Assume that magnesium oxide is the only product. Which of the following can be…
(i) Annotate and label the ground state orbital diagram of carbon below, using arrows to represent electrons. (ii) Sketch the shapes of the two types of occupied orbital identified in part (i) on the axes below, and state the orbital type for each.
Explain why the first ionization energy decreases from beryllium to barium in group 2.