Hemoglobin (hb) can react with both o₂ and co at 37 °c. the reaction below shows how co can displace o₂ from hemoglobin with a k = 2.0 x 10² :
hbo₂(aq) + co(g) < ===> hbco(aq) + o₂(g)
if the ratio [hbco]/[hbo₂] comes close to 1, death will happen. what partial pressure of co is fatal? assume the partial pressure of o₂ is 0.20 atm (since air is 20% o₂).
a) 1000 atm
b) 0.2atm
c) 200 atm
d) 4 x 10⁻⁴ atm
e)1 x 10⁻³ atm

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.