Answer:
b. NaCl solution
Explanation:
Free electrons are the main current carrier in the all materials .If the materials is having free electrons in their structure then they will allow to move the electrons from one place to another place .The current can be define as ,the charge per unit second .
In the given options only NaCl solution is having free electrons that is why only NaCl solution will conduct electricity.Solid NaCl , Solid sugar and Sugar solution do not have free electron in their structure that is why will not conduct electricity.
Therefore the answer will be b.
b. NaCl solution
Answer: it’s a 10kg barbell resting on the floor
Explanation:
This has the least gravitational potential energy
<h3><u>Answer;</u></h3>
160 g
<h3><u>Explanation;</u></h3>
1 mole of a compound contains a mass equivalent to the relative formula mass of that particular compound.
the formula of iron oxide is Fe2O3
R.A.M of Iron = 56 , while that of oxygen is 16
RFM = (56 ×2) + (16 ×3)
= 112 + 48
= 160
Therefore, 1 mole of Iron oxide contains 160 g
Answer:
It is made of atoms that are covalently bonded together.
Explanation:
For example the carbonate ion CO3++.
The carbon and oxygen atoms are held together by covalent bonds.
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