Having a pH of 6.3 for a kiddie pool would be considered as acidic. You need to increase this value to keep it safe for use. The safest pH level would be from 7.2 to 7.4. This would be safe for the skin of the one who uses the pool. Hope this answers the question.
Eon Era Period Epoch AgePhanerozoic Cenozoic Paleogene Oligocene Chattian Rupelian
Answer:
A series circuit is defined as the circuit in which a number of resistances are connected one after the other.. In a series circuit, the flow of current follows a single path.
A parallel circuit is defined as the circuit in which a number of resistances are linked across each other in such a way that one terminal of each resistance is connected to form a junction point while the remaining end is also connected to form another point.
You havent added the diagram so i cant tell you the answer, but i added the definition of each circuit, see if that helps!
Answer:
Al (s) + 3Fe3+ (aq) ---> Al3+ (aq) + 3Fe2+(aq)
Explanation:
atoms become positive (or less negative) ions when they lose electrons. They become negative (or less positive) ions when they gain electrons, since each electron (e-) has a charge of -1.
So, since Al changes to Al3+ which is positive, it loses electrons. And when Fe3+ changes to Fe2+, it becomes less positive, so it gained electrons.
Now, write the half (balanced) equations:
Al ---> Al3+ + 3e-
Fe3+ + e- ----> Fe2+
To combine both equations, we have to eliminate electrons. To do so, make sure both half equations have the same no. of electrons. We can multiply the equation of Fe by 3 so that it has 3 electrons.
3Fe3+ + 3e- ----> 3Fe2+
Finally, we can combine both equations (remember to eliminate the electrons).
Al (s) + 3Fe3+ (aq) ---> Al3+ (aq) + 3Fe2+(aq)
Check to see if both sides of the equation have equal charges. Ions always have an aqueous state.
Answer:
295.96 K ( = 22.81 degrees C)
Explanation:
PV = n RT R = .082057 L-Atm / (K-Mol) n = 3.5 P = 1 atm V = 85 liters
(1)(85) = 3.5 (.082057)(T)
solve for T = 295.96 K
