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Mrac [35]
3 years ago
14

I need help on my homework I don’t know this answer

Chemistry
1 answer:
Tems11 [23]3 years ago
8 0

Answer:

I believe the answer would be

b.) valence electrons, all thw electrons that surround the nucleus of an atom

Explanation:

You're welcome

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A sample of nitrogen gas has the temperature drop from 250.°c to 150.°c at constant pressure. what is the final volume if the in
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Charles law gives the relationship between temperature of gas and volume of gas.
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V / T = k
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\frac{V1}{T1} =  \frac{V2}{T2}
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When the ionic compound ki is dissolved in water what attraction pulls i– ions into solution?
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A car burns octane in the following balanced reaction: 2C8H18 + 25O2 -&gt; 16CO2 + 18H2O. If the car burns 500 grams of octane,
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Answer:

The answer to your question is 1544 g of CO₂

Explanation:

Data

mass of octane = 500 g

mass of CO₂ = ?

Balanced chemical reaction

               2C₈H₁₈  +  25O₂   ⇒    16CO₂   +   18H₂O

Process

1.- Calculate the molar mass of octane and of carbon dioxide

C₈H₁₈ = 2[(12 x 8) + (1 x 18)] = 2[(96 + 18] = 2[114] = 228 g

CO₂ = 16[(12 x 1) + (16 x 2)] = 16[12 + 32] = 16[44] = 704 g

2.- Calculate the mass of carbon dioxide produced

                    228 g of C₈H₁₈ ---------------- 704 g of CO₂

                     500 g of C₈H₁₈ ---------------  x CO₂

                              x = (500 x 704) / 228

                              x = 352000/228

                              x = 1544 g of CO₂

5 0
3 years ago
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