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3 years ago

Why does ice float on water ?

2 answers:

4 0

Ice floats on water because it is less dense than water. When an object is less dense then a liquid it will float. If it is more dense it will sink.

Oduvanchick [21]3 years ago

3 0

Ice floats because it is less dense than water. When water freezes, it creates a crystal lattice that occupies more volume than the water did. Because it is less dense, ice is displaced by water (and floats on top).

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A 2300-gram sample of NaCl (ℓ) completely reacts, producing 820 grams of Cl2 (ℓ). What is the total mass of Cl2(g) produced?

Oksana_A [137]

16.5 Cl2 u just need to mutiply everything by 2 or 3

7 0

3 years ago

Electron configuration is a description of the shells, subshells, and orbitals occupied by electrons?

svetoff [14.1K]

I believe the answer is true.

7 0

3 years ago

A three-step mechanism has been suggested for the formation of carbonyl chloride: Step 1: Cl2 → 2 Cl Step 2: Cl + CO → COCl Step

ladessa [460]

Answer:

COCl species is an intermediate in the mechanism.

Explanation:

Intermediates are those chemical species which only appears for a short time in a course of a chemical reaction. They act as product and reactant during the reaction. Also they do not appear in overall chemical reaction.

Step 1: $Cl_2\rightarrow 2 Cl$

Step 2: $Cl + CO\rightarrow COCl$

Step 3: $COCl + Cl_2\rightarrow COCl_2 + Cl$

Overall reaction :

$2Cl_2+CO\rightarrow COCl_2+2Cl$

As we can see that all the chemicals are present in the overall reaction beside COCl.

COCl species is an intermediate in the mechanism.

8 0

3 years ago

You collect a sample of gases from an indoor pool area. The sample contains air and water vapor. The total pressure is 100.18 ki

nikitadnepr [17]

Here we have to choose the partial pressure exerted by the air in the given sample among the given options.

The partial pressure of the air in the sample is C. 96.82 kPa.

As per the Dalton's law of partial pressure the total pressure of the gas in the pool (P) is equivalent to the summation of the partial pressure of water vapor and air pressure.

Mathematically we may write:

$P_{Total}= P_{water vapor} + P_{Air}$

Now the $P_{Total} = 100.18 kilopascalsP_{water vapor} = 3.36 kilopascals.On plugging the values:100.18 kilopascals = 3.36 kilopascals + P_{Air}$

Or, P_{Air}[/tex] = (100.18 - 3.36) kilopascals

Or, P_{Air}[/tex] = 96.82 Kilopascals.

Thus the partial pressure of the air in the sample is C. 96.82 kPa.

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3 years ago

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Answer:

Hi nisha is a good time for a good time to come

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3 years ago

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