The electron releases energy.
Answer:
The mass of silver block = 73.95 g
Explanation:
Given,
For water:
Mass = 100.0 g
Initial temperature = 24.8 °C
Final temperature = 26.2 °C
Specific heat of water = 4.184 J/g°C
For silver:
Mass = x g
Initial temperature = 59.4 °C
Final temperature = 26.2 °C
Specific heat of water = 0.2386 J/g°C
Heat gain by water = Heat lost by silver
Thus,
Where, negative sign signifies heat loss
Or,
So,
<u>Hence, the mass of silver block = 73.95 g</u>
Question: The question is incomplete. The spectrum was not added to the question. Find attached of the spectrum
Answer:
(A)
(i) 1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
(ii) Calcium
(B) Wavelength = 2.03*10^-7 m
Explanation:
A)
(i) from the spectrum, the electron configuration can be written as;
1s² 2s² 2p⁶ 3s² 3p⁶ 4s²
(ii) from the electron configuration, the element has 20 number of electron.
Therefore, the element is calcium.
(b)Calculating the wavelength using he formula;
λ = h*c/ΔE
where;
h = 6.626*10^-34
c = 3*10^8
ΔE = 0.980*10^-18
Substituting , we have;
λ = h*c/ΔE
= (6.626*10^-34 * 3*10^8)/ 0.980*10^-18
= 1.9878*10^-25/0.980*10^-18
= 2.03*10^-7 m
Answer:
Because it might be reactive or may lose its property in liquid form..
Answer:
The cell would die
Explanation:
Proteins are needed for the cell's basic functions, one of the main functions is to allow for the compaction of DNA. These proteins are called histone proteins (more commonly referred to as histones). Without histones, DNA would not be able to condense into its chromosomes, and therefore would be destroyed in cell division. Ultimately, the cell would die.