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

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

How many moles of bromine are needed to produce 3.23 moles of potassium bromide

Structure of the atoms: discovery of the nucleus in 1909i need answering all of these questions