Answer:
3.14 moles of hydrogen are produced
Explanation:
This is because for every 1 molesof hydrogen are produced 2 moles of oxygen are produced. So we take 6.28 divide it by 2 and we wend up with 3.14.
Answer:
Observe odor, determine pH, determine density, determine boiling point
Explanation:
The correct procedures that would be best to use to determine whether a beaker contains only distilled water would be to observe the odor of the liquid in the beaker, determine the pH of the liquid, determine the density, and then determine the boiling point of the liquid.
<em>Water is generally odorless and has a pH of approximately 7 with a density of 1 kg/m3 and a boiling point of 100 </em>
<em>. If the liquid in the beaker ticks all these conditions, then it can be established to be only distilled water.</em>
<span>For the answer to the question above,
Addition of HCl causes a precipitate to form:
Ag+ & Cl- -- AgCl a white ppt
H2SO4 is added to the supernate another precipitate forms:
Ba+2 & SO4-2 --> BaSO4 a white ppt
a solution of NaOH is added to the supernatant liquid until it is strongly alkaline. No precipitate is formed:
no Mn+2 & no Cu+2 which would have ppt as hydroxides</span>
I hope this helps you.
Answer:
It increases the activation energy.
It speeds up chemical reactions.
Explanation: