Answer:
Each element has unique physical properties such as density, melting point, boiling point, etc. These properties can be used to identify an element using a reference book that contains such information about each element. Flame tests, atomic spectra, and spectroscopy can be used to identify some elements.
Explanation:
Answer: B
Explanation: The mitochondria are vacuoles and ribosomes are in both plant and animal cell
Answer: B
Explanation: The clouds act almost like a lid. Think of it like when you put tin foil over food before it goes in the oven. so that even after it is removed from the heat the tin foil traps it causing it to stay warm.
7.8 x 10^-3 = 0.0078 lb/qt
1lb = 454 g
0.0078 / 454 = 1.718061 x 10^-5 g/qt