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3 years ago

Which of the following describes an impact of the specific heat of water on the planet?

Chemistry

1 answer:

Maru [420]3 years ago

3 0

Answer:

Islands and coastal places have moderate pleasant climates.

Explanation:

The specific heat of water is high as compared to most common substances. The high specific heat means that it takes lot of time to heat the water. As a consequence in coastal areas, during day, the land gets heated quickly than water.

The air above land gets heated up and due to low density, rises. The air above water which is cool rushes to take its place. The wind moves sea towards land- sea breeze. At night, the land and air above it is cooler as compared to air above water. The wind blows from land towards sea - Land breeze.

Due to sea breeze and land breeze, islands and coastal places have moderate pleasant climates.

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Calculate the percentage yield for the reaction represented by the equation CH4 + 2O2 ? 2H2O + CO2 when 1000 g of CH2 react with

makvit [3.9K]

Answer:

83.64%.

Explanation:

∵ The percent yield = (actual yield/theoretical yield)*100.

actual yield of CO₂ = 2300 g.

We need to find the theoretical yield of CO₂:

For the reaction:

CH₄ + 2O₂ → 2H₂O + CO₂,

1.0 mol of CH₄ react with 2 mol of O₂ to produce 2 mol of H₂O and 1.0 mol of CO₂.

Firstly, we need to calculate the no. of moles of 1000 g of CH₄ using the relation:

no. of moles of CH₄ = mass/molar mass = (1000 g)/(16.0 g/mol) = 62.5 mol.

Using cross-multiplication:

1.0 mol of CH₄ produces → 1.0 mol of CO₂, from stichiometry.

∴ 62.5 mol of CH₄ produces → 62.5 mol of CO₂.

We can calculate the theoretical yield of carbon dioxide gas using the relation:

∴ The theoretical yield of CO₂ gas = n*molar mass = (62.5 mol)(44.0 g/mol) = 2750 g.

∵ The percent yield = (actual yield/theoretical yield)*100.

actual yield = 2300 g, theoretical yield = 2750 g.

∴ the percent yield = (2300 g/2750 g)*100 = 83.64%.

5 0

4 years ago

a ridged 2.40L sealed vessel contains He and C3H6 gases. The partial pressure of He is 1.4 atm and that of C3H6 is 1.7 atm, at 5

balandron [24]

Answer:

Partial pressure He → 0.96 atm

Partial pressure C₃H₆ → 1.18 atm

Explanation:

We apply the Charles Gay Lussac law, to solve this. Pressure varies directly proportional to absolute T°, when the volume keeps on constant.

P₁ / T₁ = P₂ / T₂

We convert the T° to absolute T°

55°C + 273 = 328K

-45°C + 273 = 228K

Total pressure = Sum of partial pressures

1.7 atm + 1.4 atm = 3.1 atm

When we apply the formula we would know the new total pressure

3.1 atm / 328K = P₂ / 228K

(3.1 atm / 328K) . 228K = 2.15 atm

As the moles has not been modified with the change of T°, we assume the mole fraction is still the same.

Mole fraction He = Partial pressure He / Total pressure

1.4 atm / 3.1 atm = 0.45

Mole fraction C₃H₆ = Partial pressure C₃H₆/ Total pressure

1.7 atm / 3.1 atm = 0.55

0.45 = Partial pressure He / 2.15 atm

Partial pressure = 0.45 . 2.15 atm → 0.96 atm

0.55 = Partial pressure C₃H₆ / 2.15 atm

Partial pressure = 0.55 . 2.15 atm → 1.18 atm

3 0

3 years ago

Using household measuring tools use these conversions to record is a capacity of the bottle milliliters 1 cup equals 240 mL in 1

jolli1 [7]

The tool was 57 ml so he must have got

6 0

3 years ago

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Balance the following reaction in the space below indicate your answer for a b and c

Amiraneli [1.4K]

Answer:

Na3PO4 + 3KOH -------> 3NaOH + K3PO4

Explanation:

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Lunna [17]

Answer:Ammonium nitrate was the first nitrogen fertilizer

Explanation:

5 0

3 years ago