Your answer. . Chemistry The nucleus of an atom is the center portion of the atom that
contains most of its mass. A formula for the radius r of a nucleus of an atom is
r= (1.2 x 10-15)A meters, where A is the mass number of the nucleus. Suppose
the radius of a nucleus is approximately 2.75 x 10-15 meters. Is the atom boron
with a mass number of 11, carbon with a mass number of 12, or nitrogen with a
mass number of 14?

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.

How many grams of aluminum will there be in 98g of al2o3?

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.