Ammonia burns in the presence of a copper catalyst to form nitrogen gas. 4nh3(g) + 3o2(g) → 2n2(g) + 6h2o(g) δh = –1267 kj. What is the enthalpy change to burn 100 g of ammonia? molar mass=17 amu.

May all the sweet magic of christmas conspire to fill every desire..❤️ merry christmas! ❤️_❤️

Rick is on a bicycle trip. every 4 days he bikes 230 km. if rick keeps this same pace for 16 days, how many kilometers will he bike?

To the north of ginnungagap it was bitterly cold. (20) nothing was there but fields of snow and mountains made of ice. to the south of ginnungagap was a region where frost and snow were never seen. it was always bright, and was the home of light and heat. the sunshine from the south melted the ice mountains of the north so that they toppled over and fell into ginnungagap. there may be a mistake in the way the sentence is written. if you find a mistake, choose the answer that corrects the mistake. if there is no mistake, choose ‘correct as is.' a) correct as is. b) nothing was there but snow fields and mountains of ice. c) nothing was there but fields of snow and icey mountains. d) nothing was there but fields of snow and mountains of ice.