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Pavlova-9 [17]
3 years ago
11

If you are given time and distance, you can determine power if you know

Chemistry
1 answer:
qwelly [4]3 years ago
7 0

Answer:

Yeah force

Yeah Energy

Yeah Watts

Yeah Joules

Explanation:

1. (Force * distance) /time = Power

2. Energy/time = Power

3. Cause Watts = Power

4. Joules is just the unit of energy

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In the redox conversion of Ni2+ to NiO4−, the oxidation number of Ni goes from (−2, 0, +2) to (−1, +1, +7, +9). Recall that the
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Oxidation number of an atom is the charge that atom would have if the compound is composed of ions. In neutral substances that contains atoms of one element the oxidation number of an atom is zero. Thus atoms in O2, Ni2, and aluminium all have oxidation number of zero.
In this case, Ni2, the oxidation number of Ni atom is zero, 
for NiO4-, assuming oxidation number of Ni is x 
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3 years ago
Help please !!!
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B

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A cylinder with a moving piston expands from an initial volume of 0.250 L against an external pressure of 2.00 atm. The expansio
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Answer:

The final volume of the cylinder is 1.67 L

Explanation:

Step 1: Data given

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external pressure = 2.00 atm

Expansion does 288 J of work on the surroundings

Step 2: Definition of reversible work:

Wrev = -P(V2-V1) = -288 J

The gas did work, so V2>V1  (volume expands) and the work has a negative sign.(Wrev<0)

V2 = (-Wrev/P)  + V1

⇒ with Wrev = reverse work (in J)

⇒ with P = the external pressure (in atm)

⇒ with V1 = the initial volume

We can see that your pressure is in  atm  and energy in J

To convert from J to L * atm we should use a convenient conversion unit using the universal gas constants :

R = 8.314472 J/mol *K and R= 0.08206 L*atm/K*mol

V2 =- (-288 J * (0.08206 L*atm/K*mol  /8.314 J/mol *K))/2.00 atm  + 0.250L

V2 = 1.67 L

The final volume of the cylinder is 1.67 L

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Calculate the ΔG for the following system. Then state if the system is spontaneous or not spontaneous.
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Answer:

B

Explanation:

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How must atoms change so that they can join to form an ionic compound
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Atoms must gain or lose electrons in order to become ions if they are to form ionic bonds.
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