Answer:
2m.
Explanation:
molality = no.of moles of solute ÷ mass of solvent in kg
molalty = 1.5 moles ÷ 0.75 g
= 2m
I'm assuming you're asking how to test for a starch,
To do so you do this thing called the "Iodine Test"
The potassium iodide aqueous solution will form this complex with starch to form a purplish-blue color.
However, watch out for the pH as hydrolysis of starch could occur to prevent the test from working out-- and the temperature as the greater it is, the less intense the color is
Answer:
0.60g of the fungus can be allowed
Explanation:
The maximum concentration of the fungus that can be allowed is 25 ppb, that is 25mg/t.
As the peanuts are 24t, the mass of fungus that can be allowed is:
24t * (25mg/t) = 600mg of the fungus can be allowed. In grams are:
600mg * (1g/1000mg) =
<h3>0.60g of the fungus can be allowed</h3>
<h2>Answer:</h2>
The<u> diffusion </u>occurs in room.
- <u>Oder molecules move from their highest concentration to lowest concentration.</u>
<h3>Explanation:</h3>
Diffusion is a process by which molecules move down their concentration gradient. The process does not require any membrane.
So corner with perfume has high concentration of odor molecules. Hence they move to other corner with low concentration of molecules.
