(Q1) If a given 400dm3 of a gas was collected at 20°c and 720mmhg, what is the volume at S. T.P (Q2) At STP, a certain mass of gas occupies a volume of 780cm3. find the temperature at which the gas occupies 950cm3 and has a pressure of 726mmhg.
(Q3) At what pressure in atm will a gas which has a volume of 50dm3 at 15°c can occupies 60dm3 at 30°c and 203.4×10-3Nm-2.

Harvey mixes two liquids. which observation of the new mixture most likely indicates a precipitate is forming?

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Which compound contain an iron with a 3+ charge