1. Several scientists helped contribute to creating the modern model of the atom. Which statement
below is NOT a true statement about the structure of an atom?
A) The majority of an atom is empty space associated with the electron cloud.
B) The nucleus of an atom is very large and contains protons and neutrons.
c) The nucleus possesses a positive charge associated with protons.
D) The nucleus contains neutrons which carry no charge.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error

a saline water is fed to a reverse osmosis unit at flow rate o rotameter connected to reject (retentate) line reads 8 installed in reject and permeate line reads 15.2 milli siemens/cm and 300 micro siemens/com respectively.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.