Answer:

Explanation:
Hello,
In this case, we first apply the ideal gas equation to compute the moles of produced chlorine:

Then, by considering the given reaction, applying the stoichiometry, that shows a 1 to 1 relationship between chlorine and manganese dioxide, we find:

Best regards.
Answer:
sunlight
Explanation:
The plants and animals get confused with the artificial light that is used by the human beings.
Answer:
can be solid liquid or gas
is made of atoms and molecules
can change from one state to another without becoming a new substance just by adding or removing heat energy
Explanation:
Answer:
All of us are exposed to radiation every day, from natural sources such as minerals in the ground, and man-made sources such as medical x-rays. According to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem).
Explanation:
Hmm. This is very unspecific but it could either be indicating the pH of the solution or just saying it is an aqeous solution.