Urea (NH2CONH2) is the end product in protein metabolism in animals. The decomposition of urea in 0.1

Question:

Urea (NH2CONH2) is the end product in protein metabolism in animals. The decomposition of urea in 0.1 M HCl occurs according to the reaction
NH2CONH2 (aq) + H+ (aq) + 2 H2O(I) →
2 NH4+ (aq) + HCO3 ˉ(aq)
The reaction is first order in urea and first order overall. When [NH2CONH2] = 0.200 M, the rate at 61.05 oC is 8.56 × 10-5 M/s.
(a) What is the rate constant, k?