Consider a homogeneous mixture, such as a salt solution, and a heterogeneous mixture,
such as rice and pebbles. Suggest and
compare how you could separate the
substances within each type of mixture.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Which organism develops breathing organism develops breathing organs from pharyngeal arches? shark, spider, sea star, sea horse