Answer:
a mixture is a material made up of two or more different substances which are physically combined.
Explanation:
On comparing blue visible light with red visible light, there is difference in the wavelength, frequency, and energy. The difference between both red and blue visible lights are as follows.
Blue visible light:
- It has low wavelength.
- High frequency.
- More energy.
Red visible light:
- It has high wavelength.
- Low frequency.
- Less energy.
Two or more elements make up a compound
Heterogeneous Mixtures aren't uniform and are separated in the mixture. They are usually more easily able to be separated. An example is milk and cereal. The cereal isn't uniform because the milk and cereal still are separated and have their own identities. (You can easily just remove cereal from milk using a strainer)
Homogeneous Mixtures are uniform in composition and the multiple elements have become one solution. These mixtures are hard to separate into their components. An example is tap water because it contains water as well as various minerals that can only be separated by performing chemical reactions.
Answer:
19437 J
Explanation:
mass = 100 g
Initial Temperature = 23.5°C
Final Temperature = 70°C
Temperature change, ΔT = 70 - 23.5 = 46.5
Heat = ?
The parameters are related by the equation;
H = mc ΔT
where c = specific heat capacity = 4.18 J/g°C
H = 100 * 4.18 * 46.5 = 19437 J
