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ArbitrLikvidat [17]
3 years ago
15

Give reasons :

Chemistry
2 answers:
natka813 [3]3 years ago
5 0

Answer:

Some gases are soluble in water while some are not. This is because the reactivity of different gases with water either yields no results or results in the formation of newer compounds due to this interaction.

Complete step by step answer:

Before getting to the question, let us first understand how ammonia gas is produced. For the production of ammonia, a process called upward delivery is used. In this process, gases which are lighter than air are produced. Just like hydrogen gas, ammonia gas is also lighter than air. In the setup of production of ammonia, the solid reactants are placed in a horizontal test tube and are allowed to react. This tube is connected to a collection apparatus which is placed vertically and is attached using a glass syringe.

When the solid reactants are reacting, the gases formed are collected in the collection apparatus. The lighter gases stay at the top layer of the container, while heavier gases like air are collected on the lower end and are thereby released. Hence, this process is also known as the downward displacement of air.

Elza [17]3 years ago
3 0

<u>Ans 1:</u>

Ammonia is not collected over water since it is highly soluble in water

<u>Ans 2:</u>

Ammonia gas is lighter than air and hence collected by the downward displacement of air.

<u>Ans 3:</u>

The carbon dioxide is very cold as it comes out of the extinguisher, so it cools the fuel as well.

<u>Ans 4:</u>

H₂SO₄ is not used in the preparation of carbon dioxide Because the calcium sulphate formed is insoluble in water. So, CO₂ will not form.

<u>Ans 5:</u>

The opening of hard glass test tube is slanted down during laboratory preparation of ammonia gas because Ammonia gas is not collected in the gas jar by upward displacement of air because it is lighter than air

<u>Ans 6:</u>

Magnesium is reactive enough to be combusted and oxidized in a reaction with carbon dioxide:

The magnesium strip burns brightly in the air, but continues to burn in the carbon dioxide environment

<u>-</u><u>TheUnkownScientist</u>

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Sulfur reacts with oxygen and creates two compounds. Compound A contains 1.34 g of sulfur for every 0.86 g of oxygen. Compound B
spayn [35]

Answer:

The mass ratio of oxygen rounded to the nearest whole no. 3 : 2

Explanation:

According to Law of Multiple proportion when two elements combine to make two or more different compounds, the mass ratio of the two element in the first compound, when divided by the mass ratio of the second compound , form a simple whole number ratio.

Compound A contains 1.34 g of sulfur for every 0.86 g of oxygen

        \frac{1.34}{0.86}= 1.5

Compound B contains 11.63 g of sulfur for every 10.49 g of oxygen

      \frac{11.643}{10.49}= 1.0

Ratio of oxygen in each compound

   always put the larger number over the smaller number.

\frac{CompoundA}{Compound B}=\frac{1.5}{1.0}=\frac{3}{2}

3 0
3 years ago
When a highly reactive metal, such as lithium (Li), is mixed with a highly reactive nonmetal, such as chlorine (Cl), they will m
Usimov [2.4K]

Answer:

True

Explanation:

lithium atoms lose one electron each while chlorine atoms gain one electron each

8 0
3 years ago
1. Draw a wave with a longer wavelength and the same amplitude as the wave shown. Then draw a second wave with a larger amplitud
velikii [3]

Answer:

Sound traveling

Explanation:

7 0
2 years ago
Read 2 more answers
A certain solid has a density of 8.0 g/cm3. if 4.0 g of this solid are poured into 4.00 ml of water, which drawing below most cl
Alexandra [31]
Answer is: <span>the volume of water after the solid is added</span> is 4.5 ml.
d(gold) = 8.0 g/cm³; density of gold.
m(gold) = 4 g; mass of gold.
V(gold) = m(gold) ÷ d(gold); volume of gold.
V(gold) = 4 g ÷ 8 g/cm³.
V(gold) = 0.5 cm³ = 0.5 ml.
V(water) = 4.00 ml = 4.00 cm³.
V(flask) = V(gold) + V(water).
V(flask) = 0.5 cm³ + 4 cm³.V = 4.5 cm³.
4 0
3 years ago
"calculate the ratio of the velocity of hydrogen molecules to the velocity of carbon dioxide molecules at the same temperature"
Ne4ueva [31]

Answer: 1:4.69

Explanation:

The ratio can be expressed as:

Ua/Ub= √(Mb/Ma)

Where Ua/Ub is the ratio of velocity of hydrogen to carbon dioxide and Ma is the molecular mass of hydrogen gas= 2

Mb is the molecular mass of CO2 = 44

Therefore

Ua/Ub= √(44/2)

Ua/Ub = 4.69

Therefore the ratio of velocity of hydrogen gas to carbon dioxide = 1:4.69

which implies hydogen is about 4.69 times faster than carbon dioxide.

8 0
3 years ago
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