Elemental copper would be a pure substance.
When discussing discordant and harmonious sound waves, the statement tat is false is : if the original waves combine to form irregular displacement of air, the sound will be discordant. The fact is, irregular displacement of air does not guarantee sound discordance
hope this helps
What are you asking? Id love to help but cant without proper information
Three classes: 28×3=84 students
8 test tubes per student: 84× 8= 672
hope this helps!
Answer:
I had a tutor for chemistry but I think I don't have the number now.
