<h3><u>Answer;</u> </h3>
= 3.68 g/cm³
<h3><u>Explanation;</u></h3>
Density is given by dividing the mass of a substance by its volume.
Thus; Density = mass/ volume
In this case; mass = 92 g and Volume = 25 cm³
Therefore;
Density = 92 g/ 25 cm³
<u>= 3.68 g/cm³</u>
Answer;
At very low temperatures
Superconductive materials are usually most effective at very low temperatures.
Explanation;
-Superconductors only work and are very effective at very low temperatures. Therefore they have to be kept very cold with liquid nitrogen or liquid helium.
-In these materials called superconductors, the electric resistance is equal to zero. At zero resistance, the material conducts current perfectly. This is somehow incomprehensible since the flaws and vibrations of the atoms is supposed to result to resistance in the conductor when the electrons flow through it.
Answer:
Are made of sugars = Carbohydrates
Are used by organisms for long-term energy storage = Lipids
Are used by organisms for energy = Carbohydrates
Are made of fatty acids = Lipids
