3.) Charge on one molecule of PO4 is -3. So on two molecule it'll be 2(-3) = -6. Let oxidation number of Pb be x. Therefore, 3x+(-6) = 0. 3x=6. x=2.
Answer:
2-methyl-butene
Explanation:
For the E2 mechanism, we have an <u>anti-elimination</u>. The Br leaves the molecule and the base removes the hydrogen in the anti position to form the double that's why only one structure is produced. (See figure 1)
Since we have 2 hydrogens on the right carbon, we cannot indicate a <u>specific stereoisomer</u>, in other words, it is not possible to assign a <u>Z or E</u> configuration for this alkene.
Answer : The fraction of the molecules in the neutral (imidazole) form are, 0.799
Explanation : Given,
pH = 6.6
Using Henderson Hesselbach equation :
Now put all the given values in this expression, we get:
...........(1)
Now we have to determine the fraction of the molecules are in the neutral (imidazole) form.
Fraction of neutral imidazole =
Now put the expression 1 in this expression, we get:
Fraction of neutral imidazole =
Fraction of neutral imidazole =
Fraction of neutral imidazole =
Fraction of neutral imidazole = 0.799
Thus, the fraction of the molecules in the neutral (imidazole) form are, 0.799
Answer:
Because the sugar flour and eggs can no longer be separated. The properties of the materials have changed so it's a chemical change
Answer:
c) CH3CH2CH2CH3
Explanation:
Surface tension; The molecules inside the liquid attract the surface molecules and try to draw the them and make the liquid to assume in the shape having the least surface area. The suface tension increase with increase in intermolecular forces of surface liquid.
CH3CH2CH2CH3 is non-polar and have weak intermolecular forces such as London-dispersion forces.
(CH3)2CO, H2O and CH3OH are polar and have strong intermolecular forces such as hydrogen bonding.
C6H6 have high molecular mass, so will have stronger intermolecular forces.