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fiasKO [112]
2 years ago
7

Look at the image shown.

Chemistry
1 answer:
Charra [1.4K]2 years ago
6 0
Where’s the image sorry this isn’t much help but I don’t know what to answer if I can’t see the image
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Initial temperature of metal =
Evgesh-ka [11]

Answer:

the correct answers is 100 22.7 and 24.6

Explanation:

did it on edgunity

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3 years ago
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How does an increase in temperature affect the equilibrium concentration of the underlined substance and K for each of the follo
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Explanation:

Due to the positive value of the change in temperature, this is an endothermic reaction.

Since the forward reaction is endothermic, increasing the temperature increases the equilibrium constant (k).

In an equilibrium system, the position of the equilibrium will move in a way to annul the change made to the system. An increase in temperature for an endothermic reaction would favour the reaction, leading to increase in amount of products and decrease in amount of reactants.

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Octane (C8H18)reacts oxygen gas (O2) to form carbon dioxide and water
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Answer:

i believe this is true

Explanation:

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IS IT BETTER OR WORSE TO WORKOUT/EXERCISE IN DARK OR LIGHT COLORED CLOTHING? ​
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Answer:

Dark clothing

Explanation:

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3 years ago
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some inkjet printers produce picoliter-sized drops. how many water molecules are there in one picoliter of water? the density of
GrogVix [38]

3.37 x 10¹⁰ molecules

Explanation:

Given parameters:

Volume of water = 1pL = 1 x 10⁻¹²L

Density of water = 1.00g/mL = 1000g/L

Unknown:

Number of water molecules = ?

Solution:

To solve this problem, we first find the mass of the water molecule in the inkjet.

       Mass of water = density of water x volume of water

Then, the number of molecules can be determined using the expression below:

        number of moles = \frac{mass of water}{molar mass of water}

 Number of molecules = number of moles x 6.02 x 10²³

Solving:

Mass of water = 1 x 10⁻¹² x 1000 = 1 x 10⁻⁹g

Number of moles:

Molar mass of H₂O = 2 + 16 = 18g/mol

Number of moles = \frac{1 x 10^{-12} }{18} = 5.6 x 10⁻¹⁴moles

Number of molecules =  5.6 x 10⁻¹⁴   x   6.02 x 10²³ = 33.7 x 10⁹

                                     = 3.37 x 10¹⁰ molecules

Learn more:

Number of molecules brainly.com/question/4597791

#learnwithBrainly

4 0
3 years ago
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