What is the acceleration of an object that increases its velocity from 4m/s to 24m/s in 5 seconds?

Asample of sea water contains 6.28g of sodium chloride per litre of solution. how many milligrams of sodium chloride would be contained in 15.0ml of this solution?

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer

Awhite powder is added to a solution. the images show observations made before the powder is added, just after the powder has been added, and a little while later. (the liquid in the small beaker is phenol red solution.) what evidence shows that a chemical change has taken place?