4.18 Consider the following CO oxidation reactions:CO OH CO HCO O CO O,22 2+→ ++→ +kk12where k1 (cm3/ gmol-s) = 1.17 ⋅ 107T (K)1.35 exp[+3000 / RuT (K)], k2 (cm3/gmol-s) = 2.50 ⋅ 1012 exp[−200,000 / RuT (K)], and Ru = 8.315 J / gmol-K. Calculate and compare the characteristic times associated with these tworeactions for T = 2000 K and P = 1 atm. The CO mole fraction is 0.011 andthe OH and O2 mole fractions are 3.68 ⋅ 10−3 and 6.43 ⋅ 10−3, respectively.

the answer is c i believe

answer: i dont know the answer but this might

explanation:

l

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.