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2 years ago

Which of the following statements are part of the kinetic molecular theory ?

Chemistry

1 answer:

Zielflug [23.3K]2 years ago

7 0

Answer: The average kinetic energy is proportional to the absolute temperature of the gas. Gas particles are in random motion. Gas particles have no volume. And the collisions between gas particles are elastic.

Explanation: I heard this question before, I think. Hope this helps!

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Calculate the second volumes. 51.7 L at 27 C and 90.9 KPa to STP

Arturiano [62]

The second volume : 42.2 L

<h3>Further explanation</h3>

Given

51.7 L at 27 C and 90.9 KPa

Required

The second volume

Solution

STP = P₂=1 atm, T₂=273 K

T₁ = 27 + 273 = 300 K

P₁ = 90.9 kPa = 0,897 atm

Use combine gas law :

P₁V₁/T₁ = P₂V₂/T₂

Input the value :

0.897 x 51.7/300 = 1 x V₂/273

V₂= 42.20 L

6 0

2 years ago

When the pressure of a gas sample is decreased what happens to the volume?

solniwko [45]

The combined gas law states that the pressure of a gas is inversely related to thevolume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you decrease the pressure of a fixed amount of gas, its volume will increase.

6 0

2 years ago

Read 2 more answers

Which family on the periodic table is least likely to enter into chemical reactions?

Mkey [24]

Answer:

the answer is seventeen

5 0

2 years ago

HelpppA swamp is a wetland habitat that contains areas that are temporarily or permanently flooded. The Okefenokee Swamp is loca

FrozenT [24]

Wading birds live successfully in the swamp because : B) Their long legs allow them to wade in the waters without getting wet.

Explanation:

Wading birds are common habitat in swamp and muddy areas.

Some wadding birds are crane, egret, heron, sandpipers and ibis

Some characteristics of wading birds are:

long, thin legs. Also, they have large toes
long bills and long strong necks

Long legs of wadding birds allow them to walk easily in wetland without getting their feathers wet.

They live in water or near water, so their food are mainly aquatic insects, small amphibians and fishes.

Wading birds are also called shorebirds.

8 0

2 years ago

A 0.04403 g sample of gas occupies 10.0-ml at 289.0 k and 1.10 atm. upon further analysis, the compound is found to be 25.305% c

Alex73 [517]

We can first find the number of moles of gas in the container using the ideal gas law equation
PV = nRT
where P - pressure - 1.10 atm x 101 325 Pa/atm = 111 458 Pa
V - volume - 10.0 x 10⁻⁶ m³
n - number of moles
R - universal gas constant - 8.314Jmol⁻¹K⁻¹
T - temperature - 289.0 K
substituting these values in the equation
111 458 Pa x 10.0 x 10⁻⁶ m³ = n x 8.314Jmol⁻¹K⁻¹ x 289.0 K
n = 0.463 x 10⁻³ mol
molar mass of the compound = 0.04403 g/ (0.463 x 10⁻³ mol)
molar mass = 95.1 g/mol

first we need to find the empirical formula of the compound, this is the simplest ratio of whole numbers of components in the compound.
assuming 100 g of the compound is present
element C Cl
mass present 25.305 g 74.695 g
number of moles $\frac{25.305g}{12 g/mol} \frac{74.695g}{35.5 g/mol}$
= 2.11 = 2.10
divide by the least number of moles
2.11/2.10 = 1.00 = 2.10/2.10 = 1.00
therefore C - 1
Cl - 1
empirical formula - CCl
molecular formula is actual composition of components in the compound
mass of empirical unit - 12 + 35.5 = 47.5
mass of molecular formula = 95.1 g/mol
number of empirical units = 95.1 / 47.5 = 2.00
therefore molecular formula = 2(CCl)

molecular formula = C₂Cl₂

8 0

2 years ago