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pantera1 [17]
3 years ago
6

For the complete redox reactions given here write the half-reactions and identify

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
8 0
I don't know what your asking so Identify means your self
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What is the coefficient in a chemical equation
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A coefficient is the number or letter before the variable. The variable is the unknown value.
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i want to find the volume of a block of wood it has a length of 6 inches a width of 7 inces and a height of 8 inches what is the
JulijaS [17]

Answer:

336

Explanation:

L x w x h= 6 x 7 x 8 = 336

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3 years ago
2. Use the graph below to answer the following questions.
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The graph represents an endothermic reaction.

The products have more energy than the reactants.

80kJ

160kJ

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160kJ

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2 years ago
Water in ethanol solution which one of them is solvent?​
ANEK [815]

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The mixture of ethanol and water is a liquid-liquid solution. The solvent is Water.

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How many kilojoules are released when 8.2 g of water condenses at 100 °c and cools to 15 °c?
MrRa [10]

Answer:- 2.92 kJ of heat is released.

Solution:- We have water at 100 degree C and it's going to be cool to 15 degree C.

So, change in temperature, \Delta T = 15 - 100 = -85 degree C

mass of water, m = 8.2 g

specific heat of water, c = 4.184\frac{J}{^0C.g}

The equation used for solving this type of problems is:

q=mc\Delta T

Let's plug in the values in the equation and solve it for q which is the heat energy:

q = (8.2)(4.184)(-85)

q = -2916.248 J

They want answer in kJ. So, let's convert J to kJ and for this we divide by 1000.

q=-2916.248J(\frac{1kJ}{1000J})

q = -2.92 kJ

Negative sign indicates the heat is released. So, in the above process of coiling of water, 2.92 kJ of heat is released.

3 0
3 years ago
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