Tree one is meters tall. Tree two is 10.5 meters tall. What is the scale factor

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?