Calculate δ h ∘ in kilojoules for the reaction of ammonia (δ h ∘ f =−46.1 kj/mol) with o 2 to yield nitric oxide no (δ h ∘ f =91.3 kj/mol) and h 2 o(g) (δ h ∘ f =−241.8 kj/mol) , a step in the ostwald process for the commercial production of nitric acid.

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

What happens when light is scattered?

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles