I'm about 80% sure the answer is
"The process described is part of the water cycle"
Answer:
Cation present- Cr^3+
Cations absent- Al^3+,Fe^3+ and Ni^2+
Explanation:
The cations in group III are; Cr^3+,Al^3+,Fe^3+ and Ni^2+
The first step in the analysis of group III cations is the addition of sodium hypochlorite and sodium hydroxide. Chromium reacts as follows;
2Cr^3+(aq) + 3OCl^-(aq) + 10OH^-(aq) ---------> 2CrO4^2-(aq) + 3Cl^-(aq) + 5H2O(l)
In alkaline solution, Aluminum is separated from Chromium by precipitation. The yellow solution formed is unaffected by treatment with ammonia. However, in acid medium, a blue solution is formed which confirms the presence of Chromium III.
Answer:
Balanced chemical equation:
2AgNO₃ + Zn → ZnNO₃ + 2Ag
Type of reaction:
It is the single replacement reaction.
Explanation:
Consider the reaction between zinc and silver nitrate. In this chemical reaction the zinc is substituted in place of silver in silver nitrate compound.
Chemical equation:
AgNO₃ + Zn → ZnNO₃ + Ag
Balanced chemical equation:
2AgNO₃ + Zn → ZnNO₃ + 2Ag
The starting material consist of compound ( AgNO₃) and pure element (Zn).
After reaction a new compound ( ZnNO₃) and pure element (Ag) is generated.
Type of reaction:
It is the single replacement reaction.
Single replacement:
It is the reaction in which one elements replace the other element in compound.
AB + C → AC + B
Answer:
Filtration and evaporation
Explanation:
A mixture of sand, pink sugar and water can be separated by filtration and evaporation.
The pink sugar is already dissolved in the water but the sand remains undissolved in the water hence it can be filtered off. The filtrate now contains the sugar.
The sugar is obtained from the filtrate by evaporation of the solution to yield the solid pink sugar and steam which can be condensed again to give liquid water.
Cars up north require more antifreeze than water as a result of the colder
temperature which makes the coolant in vehicles more prone to freezing.
<h3>What is Freezing point depression?</h3>
This is a situation which occurs when solutes are added to a solvent in
order to reduce the freezing point of the solvent. The impurities help lower
the freezing point of the solvent and is commonly used in vehicles.
This is because cars in the North are exposed to colder temperatures
which could freeze the coolant(solvent).
Read more about Anti-freeze here brainly.com/question/1382943