Imagine you need to make a model that shows the locations of the parts of a sodium atom

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

The diagram below shows the movement of particles. what does this piece of evidence best support? the collision theory the maxwell-boltzmann distribution the effect of pressure on reaction rates the effect of temperature on reaction rates

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m