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2 years ago

Any four limitations of chemical reaction

Chemistry

1 answer:

strojnjashka [21]2 years ago

7 0

Answer:

1.It does not tells us whether a reaction proceeded completely or not.Like in some reactions some of the reactants remains unreacted and the chemical equation of this reaction doesn't tells us about it.

2.Chemical equations does not tells us/indicate the speed of reaction.I doesn't tell us how fast or how slow the reaction was.

3.It does not tells us about the physical changes like colour,state.So we have to mention it seperately.

4.It does not tell us about through which method the reaction proceeded.

5.Also in chemical reactions many intermediates are formed for a small amount of time.These are not expressed in a chemical equation...

PLZ RATE IT AND MARK AS BRAINLIEST....

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2 years ago

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How many liters of Cl2 gas will you have if you are using 63 g of Na?

ELEN [110]

Answer:

You will have 19.9L of Cl2

Explanation:

We can solve this question using:

PV = nRT; V = nRT/P

Where V is the volume of the gas

n the moles of Cl2

R is gas constant = 0.082atmL/molK

T is 273.15K assuming STP conditions

P is 1atm at STP

The moles of 63g of Cl2 gas are -molar mass: 70.906g/mol:

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Replacing:

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2 years ago

Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→C

GREYUIT [131]

Answer:

$m=8.79kg$

Explanation:

First of all we need to calculate the heat that the water in the cooler is able to release:

$Q=\rho * V*Cp*\Delta T$

Where:

Cp is the mass heat capacity of water
V is the volume
$\rho$ is the density

$Q=1 g/cm^3 *15000 cm^3*4.184 \frac{J}{g*^{\circ}C}*(10-90)^{\circ}C$

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To calculate the mass of CO2 that sublimes:

$-Q=\Delta H_{sub}*m$

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$5020.8 kJ=571 kJ/kg*m$

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2 years ago

Which of the following answers is true for the following statement?

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it is either "aweak acid or a lousy (or very weak) acid"

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2 years ago

Explain why mixing of red paint with white paint does not constitute a chemical reaction even though the product has a different

MArishka [77]

Answer:

Explanation:

In a chemical change through chemical reactions, a new kind of matter forms. When a paint is mixed together, a physical change has occurred and not a chemical change. The different color one perceives is just a mere overlap between the reflected white and red color which produces another hue.

Not all color changes infers a chemical reaction. A paint is a complex mixture on its own.

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2 years ago

Any four limitations of chemical reaction​

Any four limitations of chemical reaction