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dybincka [34]
3 years ago
12

Never have what near a heating device ?

Chemistry
1 answer:
sasho [114]3 years ago
8 0

-- a birthday party

-- a good idea

-- heartburn

-- a bad cold

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Can you provide a some sort of picture of the atom or something, please?
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A drop of water from a special dropper is 3ml. How many liters is this this. A(30) B(0.3) C(0.03) D(0.003)
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3 years ago
b) 2C2H2(g) + 5O2(g)⟶4CO2(g) + 2H2O(l) 6.54 Calculate the heats of combustion for the following reactions from the standard enth
IRINA_888 [86]

Answer:

a.  ΔH⁸ =  -1420 kJ/mol       b. ΔH⁸ =  -1144.84 kJ/mol

Explanation:

a.

                 C₂H₄ (g) + 3 O₂ (g) ------------------------  4 CO₂ (g) + 2 H₂O (l)  ΔH⁸ = ?

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ΔH⁸ = 2(-399.5) + 2 (-285.83) - (52.47)

ΔH⁸ =  -1420 kJ/mol

b.

                       H₂S (g) + 3 O₂ (g) ---------------------- 2 H₂O (l)  + 2 SO₂ (g)

ΔH⁸f  kJmol     -20.50     0                                    -285.83      -296.84

ΔH⁸ =  2(-285.83) + 2 (-296.84) - (-20.50)

ΔH⁸ =  -1144.84 kJ/mol

4 0
3 years ago
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frez [133]

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Explanation:

7 0
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Explanation:

water near where a river enters the ocean is having a higher density.

coz, ocean water has salt which increases water's density

6 0
3 years ago
Read 2 more answers
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