Identify the organism based on your differentials

organism b (gram positive bacillus)
tsi:
acid= +
gas= -
h2s= -

prdb
acid= +
gas= -

prlb
acid= -
gas= -

prsb
acid= +
gas=-

sim
h2s= -
indole= -
motility= +

lm
alkaline: +
litmus reduction: +

mr
mr= +

vp
vp= +

sc
citrase= -

uh
urease= -

ms
pathogenic= -

organism c (gram positive cocci)
tsi:
acid= +
gas= -
h2s= -

prdb
acid= +
gas= -

prlb
acid= -
gas= -

prsb
acid= +
gas=-

sim
h2s= -
indole= -
motility= +

lm
alkaline: +

mr
mr= +

vp
vp= -

sc
citrase= -

uh
urease= +

ms
pathogenic= +

ba (blood agar)
alpha: -
beta: +
gamma: +

allowed for the prediction of the properties of missing elements.

propane is burned to provide the heat in many cooking grills. the chemical reaction for this process is shown in the equation below.

c3h8 + 5o2 ? 3 co2 + 4h2o + energy

what are the products in this chemical reaction?

3co2 + 4h2o + energy

oxygen is the first element in group 16 (via) of the periodic table. the periodic table is a chart that shows how chemical elements are related to each other. the elements in group 16 are said to belong to the chalcogen family. other elements in this group include  sulfur, selenium, tellurium,  and  polonium.  the name chalcogen comes from the greek word  chalkos,  meaning "ore." the first two members of the family, oxygen and sulfur, are found in most ores.

oxygen is by far the most abundant element in the earth's crust. nearly half of all the atoms in the earth are oxygen atoms. oxygen also makes up about one-fifth of the earth's atmosphere. nearly 90 percent of the weight of the oceans is due to oxygen. in addition, oxygen is thought to be the third most abundant element in the universe and in the solar system.