A formula must always be written using element symbols (NaCl, for example) whereas a molecule can be named using symbols (NaCl) or written (sodium chloride).
Answer:
Molarity of a solution = 1 mol / L
Explanation:
Given:
Amount of NaOH =20 g
Amount of water = 0.50 l
Find:
Molarity of a solution
Computation:
1 mol of NaOH = 40 g
So,
Moles of NaOH = 20 / 40 g = 0.50 mol NaOH
Molarity of a solution = moles of solute / Liters of solution
Molarity of a solution = 0.50 / 0.50
Molarity of a solution = 1 mol / L
They are more attracted by the oxygen atom than by the hydrogen atom.
Explanation:
In the polar bond of water which is made up of hydrogen and oxygen atoms, the shared electrons are more attracted by the oxygen atom than by the hydrogen atom.
The interatomic bond in water is a polar covalent bond.
In this bond type, two species shares their valence electrons.
The bond usually occurs between non-metals with an electronegativity difference that is small.
Oxygen is more electronegative compared to hydrogen.
- This implies that oxygen pulls the electron more closely to itself since it has a greater affinity.
- This leaves a partial negative charge on oxygen and a positive charge on hydrogen.
- The molecule is said to be polar covalent.
learn more:
Covalent bond brainly.com/question/5258547
#learnwithBrainly
Answer:
146.3g NaCl (mol NaCl/58.44g NaCl) = 2.50 mol NaCl
1.5M NaCl = 1.5 mol NaCl / 1 L = 2.5 mol NaCl / x L, solve for x
x L = 2.5 mol NaCl / 1.5 mol NaCl = 1.66 L
It gives the answer and all the working.
To put it another way:
Dividing the amount required by the molar mass
we quickly see that 2.5 moles are required.
One litre of 1.5 molar solution gives 1.5 moles
we need a further mole, which is 2/3 of 1.5 so 2/3 of a litre.
Answer:
False
Explanation: sound travels fastest through solids slowest through liquids.
