Answer:
because of the substance contained in a fire extingudher it woulfnt start a fire.
1. B, helium
2. B, carbs-lipids-nucleic acids-proteins
hope I helped
<span>When the unknown liquid is heated and turned into vapor, it will not occupy the entire container. The volume in the molar mass (nRT)/PV will be greater than the actually volume of the unknown, and the calculated molar mass will be less than the actual molar mass.</span>
Answer:
The pH at the equivalence point is lower than 7
Explanation:
Given the titration involves a strong acid and a weak base
An example is the reaction between ammonia and hydrochloric acid in the aqueous phase
The pH of the base will ordinarily start high and drop rapidly with the additions of acid. As the equivalence point is approached, the pH will change more gradually, until finally one drop will cause a rapid pH transition through the equivalence point.
If a chemical indicator is used—methyl orange would be a good choice in this case—it changes from its basic to its acidic colour.
In strong acid-weak base titrations, the pH at the equivalence point is not 7 but below it. This is due to the production of a conjugate acid during the titration; it will react with water to produce hydronium ions.
Answer:
Explanation:
Explanation:
If Earth’s temperatures increase, it would likely have these effects:
The East Coast of the United States will face an increased risk of hurricanes as warmer waters increase evaporation.
The polar region will experience melting ice caps, which will cause sea levels to rise.
Warmer water in the Great Lakes will cause heavier lake-effect snows.
In the Pacific Ocean, heating of the water will cause a change in convection currents.
Hot, dry conditions will increase the risk of wildfires in the forests of California.
In the Himalayas, animal and plant life will migrate to higher ground to live.
The coastal regions of Europe will be at greater risk of flooding because of rising sea levels.