Answer:
Molarity of HCl = 1.6M
Explanation:
The chemical reaction equation is;
HCl(aq) + NaOH(aq) —> NaCl(aq) + H2O(l)
Now, molarity = number of moles/volume
Thus, for NaOH, we have;
Number of moles = molarity × volume = 2M × (20/1000) L
Number of moles = 0.04 moles
Using the coefficients in the chemical equation above, we can find the corresponding number of moles for HCl.
Number of moles of HCl = 0.04 moles NaOH × (1 mole of HCl/1 mole of HCl) = 0.04 moles of HCl
Thus;
Molarity of HCl = 0.04/(25/1000)
Molarity of HCl = 1.6M
Answer:
D. bromine (Br)
Explanation:
Bromine is an element of halogen group.
Halogens, or "salt-formers," are located in group 17 of the periodic table. The halogens have the following properties:
1) They have low melting points and low boiling points.
2) They exist as diatomic molecules in the gas phase.
3) They have seven electrons in their outermost shell, which means they have seven valence
electrons.
4) They are highly reactive nonmetals.
5) They tend to gain electrons and form negative ions.
Thus the given properties are of Bromine.
Answer:
C). Electrostatic attractions between + and - charged ions.
Explanation:
They're electrostatic attractions because it is electrovalent bonding.
Answer:
i is d " The carbons on either side of the double bond are pointed in the
same direction."Explanation:
Answer:
1) C2H4(OH)2
Explanation:
A 1,2-ethanediol has an ethane structure consisting of two Carbon atoms with a hydrogen from each carbon substituted by a hydroxyl group. This makes it a 1,2-diol.
