Answer:
Answer choice B
Explanation:
All things in the universe naturally flow from areas of higher concentration or energy to those with lower concentration or energy. A pump reverses this process, which means that you need to add energy to make it work. Hope this helps, and PM me with any further questions!
<span>Yellow
bromothymol blue is an indicator solution that is yellow in color for solutions with a pH of 6.0 or lower and blue in solutions with a pH of 7.6 or higher. Since citric acid is an acid, the pH was lower than 6.0 and the solution turned yellow. Pure citric acid has a pH of 2.2.</span>
Answer:
The flask covered with plastic wrap will contain more water that the flas left exposed.
Explanation:
Both flask will undergo evaporation of the water inside them into gas. The plastic wrapped flask will have the gaseous water condense back to water and return to the flask while the exposed flask will have the moisture evaporate into the air around it.
Answer is: A) atmospheric pollutants.
Nuclear power plants do not produce air pollution as carbon dioxide, sulfur dioxide.
Nuclear (radioactive) waste is hazardous to all forms of life and the environment.
Long term storage of radioactive waste is needed. It is important the stabilization of the waste into a form which will neither react nor degrade over many years.
If nuclear waste is wasted in atmosphere or into oceans and lagre lakes, eventually it will come in contact with living organisms.
Answer: 1.5 moles O2
Explanation:
The number of moles of each reactant and product is the number in front to the molecule when the equation is balanced.
You know that 1 mole of O2 gives you 2 moles of H2O
So you can set up a proportion using that.
1 mole O2. X moles O2
-------------- = -------------------
2 moles H2O. 3 moles H2O
Then cross multiply
2x=3
X=3/2 Or 1.5
So you need 1.5 moles O2 to get 3 moles of H2O.