How many moles of cacl2 are required to prepare 2.00 liters of 0.700 m cacl2

Explain which group an element with the electron configuration 1s2 2s2 2p6 3s2 3p6 3d1 4s2 belongs to.

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: