Answer:My answer is in the photo
Explanation:
H2SO4 or hydrogen sulfate is an acid and NaOH or sodium hydroxide is a base or an alkali. The reaction between an acid and a base or alkali produces a salt and water. The reaction between these substances is shown below:
H2SO4 (aq) + 2NaOH (aq)------>2H20 (L) + Na2SO4 (aq). The salt produced in this reaction is sodium sulfate.
Answer:
yes it can λ =265 nm
Explanation:
Here we will use the relationship
E = h c/λ ∴ λ = E/ hc where
h= Plank's constant
c= Speed of light
λ = Wavelength = ?
Substituting
note need E in J ,
E = 4.7 eV x 1.602 x 10⁻¹⁹ J/eV = 7.5 x 10⁻¹⁹ J)
λ = 7.5 x 10 ⁻¹⁹ J / ( 6.626 x 10⁻³⁴ Js x 3 x 10^8) = 2.65 x 10⁻⁷ m = 2.65
= 2.65 x 10⁻⁷ m x 1 x 10⁹ nm/m = 265 nm
Answer 1 :
Image 1 shows : Liquid phase
Image 2 shows : Gas phase
Image 3 shows : Solid phase
Image 4 shows : Solid phase
- Solid phase : In this state, the molecules are closely and tightly packed. There is no vacant space present in it.
- Liquid phase : In this state, the molecules are loosely packed and there is an intermediate vacant space present in it.
- Gas phase : In this state, the molecules are very loosely packed and there is a lot of vacant space present in it.
Answer 2 :
Liquid to gas : Evaporation
Solid to gas : Sublimation
Gas to solid : Deposition
Solid to liquid : Melting
Liquid to solid : Freezing
Gas to liquid : Condensation
Explanation :
- Evaporation : It is a type of vaporization process in which a liquid changes into gas phase by providing heat.
- Sublimation : It is a process in which a solid changes directly into gas phase without passing through a liquid phase.
- Deposition : It is a process in which a gas transforms directly into a solid phase without passing through a liquid phase.
- Melting : It is a process in which a solid changes into liquid phase by providing heat.
- Freezing : It is a process in which a liquid transform into a solid phase.
- Condensation : It is a process in which a water vapor(gas) changes into liquid state.
