Answer:
He needs to add 4 mL of the 0.5 M solution to 6 mL of water.
The correct answer is C. Compounds have different properties than their component elements. When compounds are formed, they undergo change resulting to changes in the properties they exhibit. It will have its new set of properties different from the elements.
Answer is valence electron, they all have total of 2 valence electron.
remember group number = valence electron
Impure substance, because pure would be dirt from the earth
Biosphere. it is a place where plant's and animals live together and they r interconnected to eachother
