¿cuál es el volumen (en ml) necesario para diluir 100.0 ml de una solución de cac2 5.00 m para obtener una solución 0.750 m cac2?

Iknow the answer is a but i don't know why

How many grams of co(g) are there in 74.5 ml of the gas at 0.933 atm and 30o c?

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.