The heat of solution of ammonium nitrate is 26.2 kJ/mol. If a 5.368 g sample of NH4NO3 is added to 40.0 mL of water in a calorimeter at 23.5°C, what is the minimum temperature reached by the solution? (The specific heat of water = 4.18 J/g°C; the heat capacity of the calorimeter = 650 J/°C.) Possible answers:
A. 20.8 degrees Celcius
B. -7.7 degrees Celcius
C. 25.6 degrees Celcius
D. 21.4 degrees Celcius
E. 14.3 degrees Celcius

The roman empire fell around the 5th century, and as islam spread in the 7th century, trade between europe and china slowed. chinese traders were blocked from westward expansion into europe when the chinese army was defeated by muslim fighters in the area known as syr darya. the trade routes, known as the silk road, fell into disuse, and trade between the far east and europe nearly stopped. it wasn't until the 13th century when the mongols invaded and controlled central asia and large parts of the middle east that extensive trade along these routes was opened again. based upon the paragraph above and your knowledge of the mongols, which of the following statements is correct? a. the mongols unified regions along the silk road, allowing for safe transport of goods. b. muslims controlled busy trade routes into china from the 5th to the 7th centuries. c. without access to european markets, the chinese were unable to obtain raw materials. d. the mongols replaced the roman empire as the dominant force in western europe.

What process is believed to be responsible for the formation of the grand canyon? a) diverging tectonic plates b) converging tectonic plates c) erosion over a long period of time d) caving in of the ground due to erosion

Need fast will mark brainliest ^^)based on the work you have completed in this lesson, you are going to create a transcript for a persuasive presentation to convince your client that your design improvement is the best possible solution for their needs. take your client through the different design options you considered for the product design improvement. explain why you discarded the designs that were not the best possible solution. finally, explain why your final product design covers each of the requirements and specifications you used to create your needs statement. your speech must include visual aids that include at least two schematics, or detailed illustrations, of your design. each schematic might show a different angle of your design. or the schematics might show different parts and pieces of the design. if you are unfamiliar with product schematics, find examples by doing an internet search for product schematicsno schematic neededcreate a transcript for a persuasive speech that includes schematics for your design.(just convince people to buy something anything you can think of use your own imagination)