The answer is state.
That is the state would be least helpful in determining whether a substance is a metal or a nonmetal. The state can only tells that a compound is liquid, gas or solid. But it can't tell whether a substance is metal or non-metal. So it is the least helpful in determining whether a compound is metal or non-metal.
2 Na + 2 H2O → 2 NaOH + H2 (balanced equation)
The answer would be 2, since 2 in the coefficient of both Na and NaOH
A<em>nswer:</em>
The possible branched chain structure of alcohols with chemical formula C5H12O are following.
- 3-methylbutan-2-ol
- 3-methylbutan-1-ol
- 2,2-dimethylpropan-1-ol
- pentan-3-ol
- 2-methylbutan-1-ol
- 2-methylbutan-2-ol
Structure:
Please see attachment
Disagree is the awnser to this question