Quickly 13 points +7 for best ! calculate the density of an object that has a mass of 3.0 g and a volume of 5.0 cm3. will the object float or sink when placed in water, which has a density of 1.0 g/cm3?

(a) calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 10.0 g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) imagine adding electrons to the pin until the negative charge has the very large value 1.00 mc. how many electrons are added for every 109 electrons already present

Explain why electric current cannot exist if a current doesn't have a voltage source.

What are the starting materials for nuclear fission? two small nuclei two large nuclei a neutron and a large nucleus a neutron and a small nucleus