Answer:
the answer is D . our galaxy
Fluorine is used to strengthen the enamel of your teeth, it can be used in acid form to etch glass, and chlorine is used in our drinking water and swimming pools. They're all part of the halogen family
Not my best subject, but I believe that the heat of the sun evaporates the water from other rain storms that had happened before. Once the water evaporates it gets formed into clouds (rain clouds) and after a while it get heavy or a bit cold so the cloud releases the water it held and the water being dropped is rain. I'm sorry if this is wrong this is all I can remember, but I believe it should be enough for elementary school.
Answer: 6.6 ml
Explanation:
If you had a 0.200 L solution containing 0.0140 M of Fe3+(aq), and you wished to add enough 1.27 M NaOH(aq) to precipitate all of the metal, what is the minimum amount of the NaOH(aq) solution you would need to add? Assume that the NaOH(aq) solution is the only source of OH−(aq) for the precipitation.
You have 0.014X0,2 = 0,0028 moles of Fe ion.
You need 0,0028 X 3 = 00084 moles of OH
The NaOH is 1.27 moles/liter
0.084/1.27 = 6.6 ml
