Which of the following is not an oxidation-reduction reaction?

a. ca + 2 hcl > cacl2 + h2
b. h2 + cl2 > 2 hcl
c. nacl + lino3 > nano3 + licl
d. 2 co + 2 no > 2 co2 + n2

Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

If you had to research a particular disease or area of concern in veterinary medicine and science, which one would you choose? why?