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Tamiku [17]
3 years ago
9

Which observation indicates that the kinetic-molecular theory has limited use for describing a certain gas? Gas particles are ac

ting like tiny, solid spheres. Gas particles are obeying Newton’s laws of motion. Increasing pressure is reducing the volume of the gas. Increasing collisions of gas molecules will increase energy between them.
Chemistry
2 answers:
klasskru [66]3 years ago
8 0

Answer:

D. Increasing collisions of gas molecules will increase energy between them.

Explanation:

soldier1979 [14.2K]3 years ago
7 0

My answer to the question is "Gas particles are acting like tiny,solid spheres".

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Dissolving 5.28 g of an impure sample of calcium carbonate in hydrochloric acid produced 1.14 L of carbon dioxide at 20.0 °C and
swat32

Answer:

\%\ mass\ of\ CaCO_3=93.37\ \%

Explanation:

Given that:

Pressure = 791 mmHg

Temperature = 20.0°C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (20 + 273.15) K = 293.15 K  

T = 293.15 K  

Volume = 100 L

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 62.3637 L.mmHg/K.mol  

Applying the equation as:

791 mmHg × 1.14 L = n × 62.3637 L.mmHg/K.mol  × 293.15 K  

⇒n of CO_2 produced =  0.0493 moles

According to the reaction:-

CaCO_3 + 2 HCl\rightarrow CaCl_2 + H_2O + CO_2

1 mole of carbon dioxide is produced 1 mole of calcium carbonate reacts

0.0493 mole of carbon dioxide is produced 0.0493 mole of calcium carbonate reacts

Moles of calcium carbonate reacted = 0.0493 moles

Molar mass of CaCO_3 = 100.0869 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

0.0493\ mol= \frac{Mass}{100.0869\ g/mol}

Mass_{CaCO_3}=4.93\ g

Impure sample mass = 5.28 g

Percent mass is percentage by the mass of the compound present in the sample.

\%\ mass\ of\ CaCO_3=\frac{Mass_{CaCO_3}}{Total\ mass}\times 100

\%\ mass\ of\ CaCO_3=\frac{4.93}{5.28}\times 100

\%\ mass\ of\ CaCO_3=93.37\ \%

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2 years ago
CH3CH2OH is an organic compound that is soluble in water. What type of compound is this?
shepuryov [24]

Answer:

Ethanol

Explanation:

CH3CH2OH is Ethanol

8 0
3 years ago
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Answer: answer what

Explanation:

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What should each experiment only have one of?
Ket [755]

Answer: varriable

Explanation:meaning one element, feature or factor able to change

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What is the difference between speed and acceleration?<br> Please help :)
ioda

Answer:

Speed is how fast you are going at the moment but acceleration is how fast you are building up speed to get to a set point

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