2 years ago

True or false The density of a subsidence is always the same

Chemistry

2 answers:

Ronch [10]2 years ago

4 0

The answer is true that it right and that’s what I said

Veseljchak [2.6K]2 years ago

3 0

It is true the density of a substance is always the same

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At 170C, a sample of hydrogen gas occupies 125cm3. What will be the volume at 1000C? =161cm3 If the volume of a given mass of ga

pickupchik [31]

1. V= 161

2. V = 37.3

<h3 /><h3>Further explanation </h3>

Charles's Law states that

<em>When the gas pressure is kept constant, the gas volume is proportional to the temperature </em>

$\tt \dfrac{V1}{T1}=\dfrac{V2}{T2}$

$\tt \dfrac{125}{17+273.15~K}=\dfrac{V2}{100+273.15}\\\\V2=160.7\rightarrow 161~cm^3$

$\tt \dfrac{27.3}{0+273.15`K}=\dfrac{V2}{100+273.15}\\\\V2=37.3~cm^3$

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3 years ago

In a laboratory experiment, John uses a mesh to separate soil particles from water. Which technique of separation is he using? c

Tom [10]

Filtration, he used a mesh to filter out the stuff

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3 years ago

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What is the period and atomic number of the atom with atomic number 46

UNO [17]

Answer:

Atomic number: 46

period : 5

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3 years ago

Researchers can use solvents to extract, or break apart, components of a cell or tissue to separate and/or isolate components. I

Tems11 [23]

The cell membrane which is more fat permeable will be present at the end of the process.

Solvent extraction is a very important method if separating mixtures. The principle of solvent extraction is based on the idea of like dissolves like. A substance dissolves in the component of the system in which it is most soluble.

If a cell extract is dissolved in a nonpolar solvent, the cell membrane which is mostly permeable to nonpolar molecules will dissolve most in the solvent.

Learn more:brainly.com/question/14396802

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3 years ago

A molecule contains four bonded pairs of electrons and zero lone pairs. What is the name of the molecular geometry?

vagabundo [1.1K]

Answer: Option (d) is the correct answer.

Explanation:

A tetarhedral geometry is the geometry which includes four atoms bonded to the central atom and it does not contain any lone pair of electron.

For example, $CH_{4}$ has tetrahedral geometry.

Thus, we can conclude that a molecule which contains four bonded pairs of electrons and zero lone pairs. The name of the molecular geometry is tetrahedral.

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3 years ago