Question

Questions 5 and 8 please

5. Perform the following calculations and show all of your setups The distance from Chicago to Washington DC is 1902 miles a) // Nhar is the distance in kilometers! berpandaid Krosity and b) Extra credit: If you could travel at the speed of 65 miles per hour, how many seconds would it take you to get to Washington DC (report in scientific notation)? c) Extra credit: How many microseconds is this (report in scientific notation)? Classify the following as a chemical change, a chemical property, a physical change, or a physical property. * a. Logs are able to burn W.Kalci borbe heated changesloopláliquid us 14/NSpokorless solutions are gombined and hou is released / * d. A solid is added to a colorless solution and it dissolves

Answer 1

(5 (6) given distance from Chicago to Washington = 700-2 miles (I miles 5280 feet) speed= 6.5 miles per howy. in one hour there are 60 minutes, and in (0 мии. Но их и 60 5t tоил . No. of seconds. in one hour = 60x60 = 3600 seconds

spuda 65 miles = 65 milu = 65 miles/sle I hour 3600 su 3600 Soud distance is = 700.2 Time 3600 Time - Time = 3.878x109 seconds 56) I micro second = 106 seconds No of micro selonde = 3.878 x 104 = 3.878x10 10 Micro seconds il 3.878 x 10

8. (a) logs are able to burn chemical property Tell A solid is added to a colouoless, jo solution A it dissolves physical change