2. Hydrochloric acid reacts with magnesium to produce hydrogen gas
3. a piece of copper is cut in half
4. a sugar cube is ground up
5. water is heated and changed to steam
6. iron rusts
7. ethyl alcohol evaporates
8. ice melts
9. milk sours
10. sugar dissolves in water
11. sodium and potassium react violently with water
12. pancakes cook on a griddle
13. grass grows on a lawn
14. a tire is inflated with air
15. food is digested in the stomach
16. water is absorbed by a paper towel
17. ethyl alcohol boils at 79 egress Celsius
18. paper burns
19. water freezes at 0 degrees Celsius
20. fireworks explode
21. alka-seltzer gives off carbon dioxide when added to water
22. clouds form in the sky
Answer:
It is 33.8.
Explanation:
Protists belong to the group eukaryotes (having their DNA enclosed inside the nucleus). They are not plants, animals or fungi but they act like one. They can be in general subgroups such as unicellular algae, protozoa and molds.
b. The concentration of Cl⁻ ion will be 0.1M.
c. The concentration of undissociated H₂O molecules remains unchanged.
d. The pH of the beaker's contents will be neutral.
e. The pH of the beaker's contents falls.
Answer: Option (e) is the correct answer.
Explanation:
Since, the beaker contains NaOH solution whose pH is 13. As pH of NaOH is greater than 7 so, it means that this solution is basic in nature.
Whereas pH of HCl solution is equal to 1. As its pH is less that 7 so, it is acidic in nature.
Hence, when we add 10 ml of HCl into 100 mL of NaOH then there will be a slight decrease in pH of the solution because an acid is being added into the NaOH solution.
Thus, we can conclude that the statement pH of the beaker's contents falls, correctly describes the results of this mixing.
involves the probability of finding an electron in a certain position. thats the answer