Answer: (b)
(d)
(e)
(g)
Explanation:
The four (4) important steps that are needed to obtain an accurate melting point is given as;
• First is Grinding: Grind the sample into fine powder.
• Second is Filling: Fill the capillary tube with about 3mm of powder
• Third is Adjusting the temperature: Set the voltage to rise quickly to 20° below the expected temperature, then re-adjust so the temperature rises at 2° per minute.
• Lastly is Observation and recordings: Record the temperature the temperature at which liquid first appears and the temperature at which the last crystal disappears.
I hope this helps, cheers.
Answer:
All answers stated below:
Explanation:
1. Plate Tectonics
2. lithosphere
3. asthenosphere
4. divergent boundary
5. (not sure)
6. convergent
7. transform
8. convection
People can reduce their exposure to BPA by washing out plastic cups, buying BPA free plastics. BPA should be kept out because it can cause a chemical interference in the human body
According to my brain the answer is natural gas