Answer:
False.
Explanation:
1. Most liquids do not have ionized atoms or particles within them, as the state of matter does not really allow that to freely happen.
2. Liquids may not have a definite shape, however, they have a definite volume. No matter the container you pour them into, their volume remains constant.
3. Liquids are not good conductors of electricity. Take for example water. Pure water does not conduct electricity
Hence, the statement is false with regards to liquids. However, it is true when talking about the foruth state of matter - Plasma
Answer:
Four moles of electrons
Explanation:
The reactions in a breathalyzer are redox reactions. Fuel cell breathalyzers consists of fuel cells with platinum electrodes. The current produced depends on the amount of alcohol in the breath. Detection of alcohol involves the oxidation of ethanol to ethanoic acid. The two half cells set in the process are;
Anode;
C2H5OH(aq) + 4OH^-(aq) ----------> CH3COOOH(aq) + 3H2O(l) + 4e
Cathode;
O2(g) + 2H2O(l) +4e--------> 4OH^-(aq)
Hence four electrons are transferred in the process.
Answer:
Evaporation is the method of separating a solid (solute) from a homogeneous solution.
in this method, the solution is heated until the solvent gets evaporated in the form of vapor and the solute is left behind as residue.