Answer:
1. d
2. b
3. d
4. e
5. a
explanation:
there's nothing else to explain
706000 in scientific notation is 7.06x10^5
The balanced molecular equation , with Na⁺ as the spectator ion .
2NaCrO₂(aq) + 2H₂O(l) + 6NaClO(aq) →2
CrO₄(aq) + 3Cl₂(g) + 4NaOH(aq)
There are following steps involve in balanced redox reaction in basic medium .
- Divide the reaction into two half reactions .
- Balance the elements other than oxygen and hydrogen .
- Balance the oxygen atom by adding
.
- Balance the hydrogen atom by adding
. - Add
on bath side . - Combine
and
to form form
.
- Balance the charge by adding
.
- Add the half reaction and simply .
The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction is called reducing agent .
To learn more about balanced redox reaction please click here ,
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Answer:
0.2
Explanation:
1. First, figure out the molar mass of said element(s).
The molar mass of carbon is 12.0107. Whether you round this or leave it as is depends on your's and/or your teacher's personal preference.
2. Next, convert grams to moles by dividing the initial mass of carbon by the molar mass. Round if neccecary.
2.4g ÷ 12.0107g/mol = 0.2mol
Answer:
Explanation:
<u>1) Reaction (given):</u>
<u />
- FeO(s) + CO(g) → CO₂(g) + Fe(s) ΔH = -11.0 kJ;
ΔS = -17.4 J/K
<u />
<u>2) Spontaneous reactions (ΔG < 0)</u>
The sign of the change in free energy (ΔG) tells if a reaction is spontaneous or not at a given temperature and constant pressure.
If ΔG is negative ( ΔG < 0) the reaction is spontaneous; if ΔG is positive ( ΔG > 0) the reaction is nonspontaneous.
Then, determine the temperature at which ΔG becomes zero, which is the temperature at which the reaction becomes nonspontaneous.
<u>3) ΔG⁰ = ΔH⁰ - TΔS⁰</u>
ΔG⁰ = -11,000 J - T (-17.4 J/ K) [ -11.0 kJ were converted to J]
0 = - 11,000 J + 17.4 T J/K
11,000 J = 17.4 T J/ k
T = 11,000 kJ / (17.4 J/K) = 632 K ← answer