Ill upvote

find the average acceleration of a northbound subway train that slows from 12 m/s to 9.6 m/s in 0.9 s

question 3 options:

-2.7 m/s

2.7 m/s2

-2.7 m/s2

2.7 m/s

Describe in detail the melting point behavior of the 80: 20 benzoic acid-mandelic acid mixture

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

In which situation can a mixture always be called a solution