Sio2 + 4hf = sif4 + 2h2o, what mass of hf is necessary to produce 12.91g of the sif4?

Two things that biomedical has invented or innovated

What is i fracture in the crust called when land move up, down or sideways

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.