Explanation:
The ionic strength of a solution, I, is defined as
I=1/2 Σ m_i z_i^2
Where m_i is the concentration of the ion, and z_i is the charge of the ion.
For 1 M NaCl solution, Ionic strength I = ½ (1*12 + 1*12) = 1.00;
For, 1 M (NH4)2SO4, concentration of [NH4] = 2 M and [SO4] = 1 M;
I = ½ (2*12 + 1*22) = 3.00;
so ionic strength of 1 M (NH4)2SO4 is different, therefore it is a serious error.
A control group is the group in an experiment that does not receive any sort of change, to then be compared to the other treated objects at the end of the study.
Answer:
2
Explanation:
The number of carbon atoms that are sp²-hybridized in this alkene is 2
Because all the single bonded carbon atoms in the alkene are sp²-hybridized
There are three(3) single formed via sp² orbitals and one ( 1 ) PI bond formed via Pure-P-orbital
attached below is the some part of the solution
Answer:
The correct option is: C. tetrahedral, polar
Explanation:
Trifluoromethane, also known as Fluoroform, is a chemical compound with the molecular formula CHF₃.
Since three fluorine atoms and one hydrogen atom is bonded to the central carbon atom and there are zero lone pairs on the carbon atom. Therefore, the<em> molecular geometry and shape of CHF₃ is tetrahedral</em>.
As there are three carbon-fluorine polar bonds in CHF₃ molecule, thus there is a net dipole moment. <em>Therefore, CHF₃ is a polar molecule.</em>
There are several ways to visually represent compounds. For this particular organic compound, we can use the skeletal formula and the expanded formula. The skeletal makes use of lines to show which atoms are bonded to each other. The expanded formula shows the species of the atoms and their bonding with other atoms. I have attached the two representations.