Найти наименьший объем сжатого гелия. может выдержать давление не более 1мпа.в нем надо разместить 4кг гелия при температуре не выше 27°с. молярная масса гелия 0,004кг/моль. газовая постоянная 8,31дж!
1.there was a gate in the castle wall. 2.there was a garden behind the castle. 3.there was a river near the castle. 4.there were two dogs on the lawn. 5.wendy was in the tree. 6.there were ducks on the lawn in front of the castle. 7.charlie was in the window.