Answer:
Grey precipitate implies the presence of silver ions
Yellow precipitate implies the presence of lead II ions
Explanation:
Qualitative analysis provides us a quick method of identifying ions present in a sample by chemical reactions involving simple reagents. Precipitates having a unique colour is formed. The identity of ions in the sample is deduced from the colour of precipitate obtained when particular reagents are added.
In the question, a precipitate containing silver ions upon standing turn into grey colour. Similarly, lead II ions give a yellow precipitate.
Answer:
See below.
Explanation:
This will give magnesium chloride solution and hydrogen gas will evolve.
Mg(s) + 2HCl(l) ---> MgCl2(l) + H2(g)
Answer:
The answer is
<h2>14.50 cm³</h2>
Explanation:
The volume of a substance when given the density and mass can be found by using the formula
From the question
mass of iron = 114 g
density = 7.86 g/cm³
The volume is
We have the final answer as
<h3>14.50 cm³</h3>
Hope this helps you
Answer:
I think
(d) All compounds contain the same elements in the same properties
Energy is the ability to do work
