You should avoid it because there are hazards to consider when you are doing a laboratory experiment. For example the sleeves might catch in fire , you spilled a corrosive solution in yourself.
Answer: for 3. I would say it means that the amplitude is greater because if a sound is louder that means the amplitude is larger, same with the light.So that would mean the softer the sound the smaller the amplitude same with the dim of the light so for 4. It would be the amplitude is smaller. Hope this helps! :) ( if you have any questions feel free to ask)
Eta Carinae could be as large as 180 times the radius of the Sun, and its surface temperature is 36,000-40,000 Kelvin. Just for comparison, 40,000 Kelvin is about 72,000 degrees F. So it's the blue hypergiants, like Eta Carinae, which are probably the hottest stars in the Universe.
Option A is incorrect because phenol exists in liquid state at room temperature and its boiling point is 181 °C.
Option B is incorrect because there is no ether linkage in phenol. Its chemical formula is Ph-OH.
Option C is correct. As the chemical formula cited above contains hydroxyl group (i.e. -OH).
Option D can be considered incorrect because only one derivative of phenol (<span>Guaiacol</span>)is used as flavoring agent in whisky.
The greater amount is the solvent and the lesser amount is the solute.
Hence ethanol(200g) which is the greater amount is the solvent here.
And water (145g) which is lesser is the solute here.