The maximum contamination level of arsenic ion in a water system is 0.050 parts per million. If the
arsenic is present as AsCl 3 , how many grams of
arsenic chloride could be present in a system that
contains 8.2 x 10 5 Liters?
a) 0.55 g d) 62 g
b) 7.3 g e) 98 g
c) 41 g

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

Covalent compounds: mastery test select the correct answer what is formed when atoms join together with a covalent bond? a. an ion b. a molecule c. a neutral atom d. a noble gas