Answer:
AlCl3.Structure 2 can be classified as both a Brønsted–Lowry and a Lewis base.
Explanation:
Let us recall that a Lewis acid is a lone pair acceptor while a Lewis base is a lone pair donors.
A Brownstead-Lowry acid is a proton donor while a Brownstead-Lowry base is a lone pair acceptor.
NH3 functions as a Lewis base because it can donate it's lone pairs in coordinate covalent bonding.
It can also accept a proton thereby acting as a Brownstead-Lowry base in the formation of the NH4+ ion.
Answer:
The physical properties of matter are any properties that can be perceived or observed without changing the chemical identity of the sample. In contrast, chemical properties are those that can only be observed and measured by performing a chemical reaction, thus changing the molecular structure of the sample. Mass (like volume) is an extensive physical property because its value depends on the quantity of the matter, unlike temperature. It is not a chemical property as its measurement includes no chemical reaction and change.
Hope this helps!
Points out that when water freezes
The periodic table lists all the elements, with information about their atomic weights, chemical symbols, and atomic number. The arrangement of the periodic table leads us to visualise certain trends among atoms.
Explanation:
The given data is as follows.
Pressure (P) = 170 torr, mass of heptane (m) = 86.7 g
First, we will calculate the number of moles as follows.
No. of moles =
=
= 0.867 mol
Now, the number of moles of are calculated as follows.
No. of moles =
=
= 1.07
Therefore, mole fraction of heptane will be calculated as follows.
Mole fraction =
=
=
= 0.445
Now, we will calculate the partial pressure of heptane as follows.
=
= 75.65 torr
Thus, we can conclude that the partial pressure of heptane vapor above this solution is 75.65 torr.