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4 years ago

1. Air boiled out of water as steam is rich in ?

Chemistry

1 answer:

Colt1911 [192]4 years ago

4 0

Answer:

1. The air boiled out of water as steam is rich in water vapor, H₂O(g)

2. Benzene reacts with hydrogen in the presence of nickel catalyst at 180°C to give cyclohexane.

Explanation:

1. When water boils liquid water passes to gaseous phase.

Water in gaseous phase is named water vapor or steam.

This happens around 100ºC, depending on the atmospheric pressure.

The air that is around the boiling water will carry that steam, becomind an air rich in water vapor, H₂O(g)

2. Benzene has chemical formula C₆H₆.

It is a cyclic unsaturated hydrocarbon. Benzene contains 3 double bonds.

When unsaturated hydrocarbons are heated in the presence of nickel catalyst, the double bonds are broken, forming single bonds and adding the needed hydrogen to the chain: one to each carbon that had a double bond transformed into single bond.

Thus, the product of the catalytic hydrogenation of benzene, C₆H₆, is cyclohexane, C₆H₁₂

The image attached, taken fron the internet, can help you.

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EleoNora [17]

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3 years ago

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Some facts or characteristics of endoplasmic reticulum

Wittaler [7]

Facts:
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4 years ago

How many molecules are there in 560 grams of CoCl2?

Marrrta [24]

Answer:

25.89 × 10²³ molecules

Explanation:

Given data:

Mass of CoCl₂ = 560 g

Number of molecules present = ?

Solution:

Number of moles of CoCl₂:

Number of moles = mass/molar mass

Number of moles = 560 g/ 129.84 g/mol

Number of moles = 4.3 mol

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ molecules

4.3 mol × 6.022 × 10²³ molecules /1 mol

25.89 × 10²³ molecules

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3 years ago

Which of the solutions have greatest osmotic pressure 30% sucrose 60% sucrose or 30% magnesium sulfate?

timofeeve [1]

Answer:Osmotic pressure is the minimum amount of pressure a solution must exert in order to prevent from crossing a barrier by osmosis. Solute molecules have difficulty crossing semipermeable membranes, so the more solutes that are in a solution, the higher the osmotic pressure will be. Between 30% sucrose and 60% sucrose, 60% sucrose will have a greater osmotic pressure than 30% because it has a higher percentage of solutes. However, since sucrose has a higher potential to cross semipermeable membranes and is more absorbable than magnesium sulfate, magnesium sulfate would have a higher osmotic pressure than 60% sucrose even though 60% sucrose has higher molecules.

Explanation:

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3 years ago

2. Equal length of magnesium ribbon are taken in two test tubes ‘A’ and ‘B, H2SO4 is

s2008m [1.1K]

Answer:

The answer to your question is below

Explanation:

Data

Test tube 1 Test tube 2

Magnesium + Sulfuric acid Magnesium + Acetic acid

Mg + H₂SO₄ Mg + CH₃COOH

a) Test tube 1 will have a more vigorous reaction than test tube 2.

b) Sulfuric acid is a strong acid and Acetic acid is a weak acid.

i.- Sulfuric acid because is a strong acid

ii.- Acetic acid because is a weak acid.

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4 years ago