Answer: <span>
A hexagon with nothing drawn inside it does not represent Benzene.
Explanation:Below attached picture contains structures mentioned in given option.
Structure of
Option-A is shown in
Red Color.
</span>
Structure of
Option-B is shown in
Blue Color.
Structure of
Option-C is shown in
Green Color.
Structure of
Option-D is shown in
Orange Color.
Result: Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.
In chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles.
Magnesium dichloride or Magnesium chloride
Answer:
= 9.872002 × 10^6
Explanation:
Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. The resulting decimal number is a.
Count how many places you moved the decimal point. This number is b.
If you moved the decimal to the left b is positive.
If you moved the decimal to the right b is negative.
If you did not need to move the decimal b = 0.
Write your scientific notation number as a x 10^b and read it as "a times 10 to the power of b."
Remove trailing 0's only if they were originally to the left of the decimal point.
1. big bang-the most accepted theory on the origin of the universe <span>
2. steady state-</span>all is the same and will always stay the same <span>
3. oscillating universe-</span>agrees with the big bang theory, but insists the universe expanded much quicker <span>
4. inflation-</span>it's like an inflating and deflating balloon that never stops