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SashulF [63]
3 years ago
8

Identify the numbers from the statements above as exact or measured. Sort these numbers into the proper categories.

Chemistry
1 answer:
elena-s [515]3 years ago
3 0

Answer:

Here is a similar question ; Identify the numbers from the statements above as exact or measured Sort these numbers into the proper categories. 93 g of silver, One minute, 2.20 lb ,One kilogram ,27 miles ,One yard, 100 g of sterling silver ,60 s, 1gal ,3 ft Exact Measured

Explanation:

Here is a similar question ; Identify the numbers from the statements above as exact or measured Sort these numbers into the proper categories. 93 g of silver, One minute, 2.20 lb ,One kilogram ,27 miles ,One yard, 100 g of sterling silver ,60 s, 1gal ,3 ft Exact Measured

Exact number are known from scientific research that has been proven to be true and widely acceptable or are known from true definition. for example 0 degree celsius = 273k, 1atm = 101.325 kPa

while measured numbers are not widely acceptable, they are as a result of individual measurement and discretion. A may measure the mass of a stone to be 3.5g, another person B may measure the same stone and arrive at 3.4g.

  • exact numbers ; one minutes, One yard, One kilogram, 1gal, 3ft, 100g of sterling silver

  • measured numbers ; 93g of silver, 2.20 lb, 27 miles
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Pls help ASAP........ A student was roasting marshmallows over a fire. The student
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Answer:

A chemical change

Explanation:

The marshmallow turning brown and bubbling implies that a chemical change has taken place.

For chemical changes to occur, we observe any of the following:

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3 years ago
A gas is placed in a storage tank at a pressure of 30.0 atm at 20.3 C. As a safety device, a small metal plug in the tank is mad
QveST [7]

Answer: 41.2 atm

Explanation

To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=30.0atm\\T_1=20.3^0C=(20.3+273)=293.3K\\P_2=?\\T_2=130^0C=(130+273)K=403K

Putting values in above equation, we get:

\frac{30.0}{293.3K}=\frac{P_2}{403}\\\\P_2=41.2atm

The maximum pressure (in atm) that will be attained in the tank before the plug melts and releases gas is 41.2

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