Why can a solution be classified as a mixture?
a)it is made up of only one substance
b)both are always homogeneous
c)both are made up of two substances that are not chemically combined
d)both are made up of two substances that are chemically combined

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

Quickly what are the following of organisms that existed over a wide area but only for a limited time period called a. soft fossils b. mold fossils c. index fossils d. trace fossils

How can you write e method for the experiment of separating sand from water by filtration process? 1-materials 2-steps 3-conclusion also the same for the separating process of water and salt by filtration or distillation. quick because i need to finish my hw