When a current is passed through a solution of salt water, sodium chloride decomposes according to the following reaction: 2nacl + 2h2o → 2naoh + cl2 + h2. using the periodic table, what are the molecular masses of the starting and ending substances? nacl = g/mole a 58.44 b 35.45 c 22.9 cl2 = g/mole a 35.45 b 70.90

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.