Answer:
that they all dissolved went on watef
The concentration in mol/L of the chemist's potassium iodide solution : = 4.4 x 10⁻⁴ M
<h3>Further explanation</h3>
Given
88. μmol of Potassium iodide
200. mL volumetric flask
Required
The concentration
Solution
Molarity is a way to express the concentration of the solution
Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
Conversion :
88. μmol = 88 . 10⁺⁶ mol = 8.8 10⁻⁵ mol
200 ml = 0.2 L
The molarity :
= n : V
= 8.8.10⁻⁵ : 0.2
= 4.4 x 10⁻⁴ M
Answer:
red
Explanation:
Benedict's solution -
It is the chemical composition of copper(II) sulfate pentahydrate , sodium citrate and sodium carbonate .
The solution of Benedict is used to test sugars , like glucose.
The color of Benedict's solution is blue.
And the reaction with various sugars changes the color of the solution.
The color change is usually from blue to yellow , green , brick red , depending on the concentration of the sugar.
- In case of low concentration of glucose , the color change is from blue to green / yellow.
And ,
- In case of high concentration of glucose , the color change is from blue to red.
Sulfur would be classified as a nonmetal.
Sulfur is a very important element on the periodic table of elements. It was originally known as brimstone and was discovered by Antoine Lavoisier in the year of 1789.
Answer:
The Group 2 metals become more reactive towards the water as you go down the Group.
Explanation:
These all react with cold water with increasing vigour to give the metal hydroxide and hydrogen. ... You get less precipitate as you go down the Group because more of the hydroxide dissolves in the water. Summary of the trend in reactivity.
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