Answer:
Its a small dense spherical structure in the nucleus of a cell during interphase.
Answer:
So the students in the lab could be safe. But the Teacher should also have a fire blanket inside the lab because fire can not keep going if i is covered or packed inside i should say. But anyways that's why the teacher did that. Hopes this helps.
Explanation:
Answer:
Fluorometric emission scanning.
Explanation:
Fluorometric emission scanning is used to detect the presence of porphyrins. There are various types of porphyrins and they can be tested in a lab with either, urine or blood sample testing.
Answer:
Equation correctly showing the heat of solution

Explanation:
Mass of aqueous solution = m = 100 g
Specific heat of solution = c = 4.18 J/gºC
Change in temperature = 
ΔT = 21.6ºC - 30.0ºC = -8.4ºC
Heat lost by the solution = Q


Q = -3,511.2 J ≈ -3.51 kJ
Heat absorbed by potassium nitrate when solution in formed; Q'
Q' = -Q = 3.51 kJ
Moles of potassium nitrate , n= 

The heat of solution =

So, the equation correctly showing the heat of solution
