1. A student was given a mixture containing
copper oxide (insoluble) and copper sulfate
(soluble) and asked to separate them. Firstly,
she stirred the mixture into water, then filtered
it Next, she evaporated the filtrate.
a) What substance was the
residue in the filtration?
b) Describe what the filtrate was.

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state. a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car

What prefix multiplier is appropriate for reporting a measurement of 5.57 ×10−5 m?