Answer:
4%
Explanation:
the answer is 4% , hope this help
A indicator is a weak organic acid or a base which has shows different colors in acidic and basic mediums. The color change occurs when the weak acidic or basic indicator dissociates to give its respective conjugate base or conjugate acid.
Therefore the correct option would be Indicators are weak acids or bases.
<em>Answer:</em>
- Pivalic acid forms a strong conjugate base.
<em>Explanation:</em>
- Strong acid has weak conjugate base
- Weak acid has strong conjugate base
As in this case, pivalic acid is weak acid (Due to electron donating effect of <em>tert.</em> butyl group) having pka value of 5.0 , so its conjugate base will be strong as compare to formic acid which is stronger acid.
<em>Summary: </em>
- As pivalic acid is weak acid as compare to formic acid, so its conjugate base will be strong and vice versa.
Empirical Formula StepsN2O6Sr Strontium Nitrate
Explanation:
<span>Mass was not conserved during this change. When paper burns, oxygen from the air combines with carbon and hydrogen from the paper in a chemical reaction to produce CO2 and water vapour. These waft away after the burning, just like smoke. Therefore, the paper has a lighter mass, because some of the mass it held before (from the carbon and hydrogen) has been lost.</span>
