The molar mass of barium hydroxide is 171.3 g/mol (option 3).
Molar mass is the mass of a given substance divided by its amount, measured in moles. It is commonly expressed in grams per mole.
The molar mass of a compound can be calculated by summing up the atomic masses of the constituent elements. According to this question, barium hydroxide was given. The molarmass can be calculated as follows:
Ba(OH)₂ = 137.33 + (16 + 1)2
= 137.33 + 34
= 171.3g/mol (option 3).
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Answer:
The correct answer is A) carbon-carbon bonds.
Explanation:
The noncovalent interactions can generally be classified into electrostatic, π interactions, Van der Waals forces, and hydrophobic interactions. They do not share electrons, but present more dispersed variations of electromagnetic interactions between molecules or within the same molecule.
In a carbon-carbon bond, there is a covalent bond between two atoms in an organic compound. The most common form is the simple bond, which is composed of two electrons, one belonging to each of the two atoms. The simple carbon-carbon bond is a sigma bond.
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Answer:
The correct option is A
Explanation:
Non-covalent interactions, from the name, means interactions that do not involve covalent interaction. Covalent interaction involves the sharing of electrons between two atoms. The bond between two carbons in organic compounds is covalent bond. The covalent interaction in itself does not permit for three-dimensional structure. Examples of noncovalent interaction include hydrogen bonds, ionic interactions, van der waals interactions and hydrogen bonds
b. A mole of a monatomic element corresponds to one Avogadro's number of atoms.
c. One mole of a monatomic element has a mass equal to its atomic mass expressed in grams.
d. One mole of water contains 1/2 mole of oxygen atoms.
e. None of the above
It is false that d. One mole of water contains 1/2 mole of oxygen atoms.
Let's consider which of the following statements about the mole is false.
a. The size of a mole of atoms has a reasonable mass. TRUE. For instance, 1 mole of Na has a mass of 23 grams.
b. A mole of a monatomic element corresponds to one Avogadro's number of atoms. TRUE. A mole of atoms contains 6.02 × 10²³ atoms (Avogadro's number).
c. One mole of a monatomic element has a mass equal to its atomic mass expressed in grams. TRUE. For instance, the molar mass of Na is 23 g/mol and the atomic mass is 23 amu.
d. One mole of water contains 1/2 mole of oxygen atoms. FALSE. The molar ratio of H₂O to O is 1:1. Thus, 1 mole of H₂O contains 1 mole of O.
It is false that d. One mole of water contains 1/2 mole of oxygen atoms.
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Answer:
The answer is D.
Explanation:
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The answer to this question is 19
A. ClAl3.
B. Cl3Al.
C. AlCl3.
D. Al3Cl.
AICI3
which is choice c.
Aluminium chloride
Chemical compound
DescriptionAluminium chloride is the main compound of aluminium and chlorine. It is white, but samples are often contaminated with iron(III) chloride, giving it a yellow color. The solid has a low melting and boiling point. Wikipedia
IUPAC ID: aluminium chloride
Molar mass: 133.34 g/mol
Soluble in: Water
Related Lewis acids: Iron(III) chloride; Boron trifluoride
Heat capacity (C): 91.1 J/mol·K
Other names: aluminium(III) chloride; aluminum trichloride