All categories

4 years ago

When a gas particle changes phase into a liquid particle:

Chemistry

2 answers:

STatiana [176]4 years ago

6 0

The particle is condensing end energy is decreasing.

vladimir1956 [14]4 years ago

3 0

The particle loses energy

You might be interested in

an engineer wishes to design a container that will hold 12.0 mol of ethane at a pressure no greater than 5.00x10*2 kPa and a tem

OleMash [197]

Answer:

The minimum volume of the container is 0.0649 cubic meters, which is the same as 64.9 liters.

Explanation:

Assume that ethane behaves as an ideal gas under these conditions.

By the ideal gas law,

$P\cdot V = n\cdot R\cdot T$ ,

$\displaystyle V = \frac{n\cdot R\cdot T}{P}$ .

where

$P$ is the pressure of the gas,
$V$ is the volume of the gas,
$n$ is the number of moles of particles in this gas,
$R$ is the ideal gas constant, and
$T$ is the absolute temperature of the gas (in degrees Kelvins.)

The numerical value of $R$ will be $8.314$ if $P$ , $V$ , and $T$ are in SI units. Convert these values to SI units:

$P =\rm 5.00\times 10^{2}\;kPa = 5.00\times 10^{2}\times 10^{3}\; Pa = 5.00\times 10^{5}\; Pa$ ;
$V$ shall be in cubic meters, $\rm m^{3}$ ;
$T = \rm 52.0 \textdegree C = (52.0 + 273.15)\; K = 325.15\; K$ .

Apply the ideal gas law:

$\displaystyle \begin{aligned}V &= \frac{n\cdot R\cdot T}{P}\\ &= \frac{12.0\times 8.314\times 325.15}{5.00\times 10^{5}}\\ &= \rm 0.0649\; m^{3} \\ &= \rm (0.0649\times 10^{3})\; L \\ &=\rm 64.9\; L\end{aligned}$ .

4 0

4 years ago

A formula unit is defined as the lowest whole number ratio of

mixer [17]

Answer: $BaF_{2}$

Explanation: Because barium is in Group 2, it forms ions with a charge of +2. Fluorine, in Group 17, form ions with a charge of -1. Cross the charges to get the subscripts (Since Ba has a charge of +2, F has a subscript of 2. Because F has a charge of -1, Ba needs a subscript of 1). Therefore, a formula unit of the compound is $BaF_{2}$ .

8 0

3 years ago

How to know the elements amount of charge please give me example

asambeis [7]

Answer:

There are four ways to find the charge of an element:

Use the periodic table. The usual charge of an element is common to its group. ...

Use a chart. ...

For a single atom, the charge is the number of protons minus the number of electrons.

Find the charge by balancing charge in a compound

3 0

3 years ago

The scientific method _____.

Brrunno [24]

the answer is A.) because the scientific method is used to answer problems.

This is the steps,

STEP 1: ask a question

STEP 2: state your hypothesis

STEP 3: conduct an experiment

STEP 4: analyze your results

STEP 5: make a conclusion

7 0

3 years ago

Read 2 more answers

Which structures make it possible for some kinds of prokaryotic cells to move around

crimeas [40]

The correct answer of the given question above would be FLAGELLA. The structure that makes it possible for some kinds of prokaryotic cells to move around is the FLAGELLA. Prokaryotic cell is one of the types of cells. The other type is the Eukaryotic cell. This cell is found in two Kingdoms of life which are Archaea and Bacteria. Hope this answer helps.

4 0

4 years ago

Read 2 more answers