C. estaremos llegando
Why? Because it’s talks about us so you need to use the proper term. Estaremos refers to us. It translates to “Next next day at this same hour we will be arriving at the house.”
Antiguo means old in Englsih.
Write equations (balanced) for the reaction of nitric acid with each of the following.
(i) sodium
(ii) magnesium oxide
(iii) ammonia