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3 years ago

All of the following conditions of STP are true except A. 101.3 kPa B.3.81kPa.L/mol.K C. 24.2 L D. 273.15 K

Chemistry

2 answers:

Dimas [21]3 years ago

8 0

Answer: The correct answer is Option B.

Explanation:

STP conditions are defined as standard temperature and pressure conditions.

The temperature at this condition is taken as 273.15 K
The pressure at this condition is taken as 1 atm or 101.3 kPa or 760 mmHg or 760 Torr.

Also,

1 mole of a gas occupies a volume of 22.4 L

The value of gas constant at this condition is taken as $8.31\text{L kPa }mol^{-1}K^{-1}$ , $0.0821\text{L atm }mol^{-1}K^{-1}$ etc..

Hence, the correct answer is Option B.

Tasya [4]3 years ago

6 0

The answer is c 24.2l

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Taking into account the definition of density and Archimedes' principle, the beginner bowling ball will float on the water.

But first it is neccesary to know that density is a quantity referred to the amount of mass in a certain volume of a substance or a solid object.

In other words, the density is the relationship between the weight (mass) of a substance and the volume that the same substance occupies.

The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

In this case, a beginner's bowling ball has a mass of 4.9 kg and a volume of 5.4 liters. This is:

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Replacing in the definition of density:

$density=\frac{4900 g}{5400 mL}$

Solving:

density=0.907 $\frac{g}{mL}$

On the other hand, Archimedes' principle says that an object immersed in a liquid experiences an upward vertical force equal to the weight of the volume of the dislodged liquid.

The sinking or floating of an object is determined by its density with respect to that of the liquid in which it is submerged.

Considering water as the liquid where the object is submerged in this case, an object with a higher density than water will sink. In contrast, an object with a lower density than water will float.

In this case, considering that water has a density of 1 $\frac{g}{mL}$ , the bowling ball for beginners has a lower density. This indicates that, having a lower density than water, the object will float.

In summary, the beginner bowling ball will float on the water.

Learn more about density:

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2 years ago

Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will____

VARVARA [1.3K]

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