PLEASE HELPA steel tank of nitrogen gas is left in the sun. Initially, the gas's pressure is 150 atm at 27 degrees Celsius. The tank heats up to 55 degrees Celsius after several hours in the sun. What is the new pressure of the gas in the tank?
Answers
Answer:
164atm
Explanation:
Given parameters:
Initial pressure of tank = 150atm
Initial temperature of tank = 27°C = 27 + 273 = 300K
New temperature of tank = 55°C = 328K
Unknown:
New pressure of gas = ?
Solution:
From the combined gas law, at constant volume, the pressure of a given gas varies directly with the absolute temperature.
Mathematically;
=
P and T are pressure and temperature values
1 and 2 are the initial and new states
Insert the parameters and solve;
=
300P₂ = 150 x 328
P₂ = 164atm
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To solve this we must be knowing each and every concept related to experiment. Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.
What is experiment?
Any procedure where measurements are taken and tests are run to support or disprove a hypothesis is referred to as a scientific experiment.
A science class is conducting an experiment that produces noxious fumes. Because of inadequate ventilation, some students begin to feel nauseated and dizzy. The first response should be to leave the room and go to an area with fresh air.
Therefore, the correct option is option A that is to leave the room and go to an area with fresh air.
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It should be used 2 digits to the right of the decimal point to report the result
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When adding or subtracting two decimal numbers, the number of digits to the right of the decimal point in the result is equal to the amount with the least number of decimal places.
In this case we have 4 decimal places in 0.0136 g, 2 decimal places in 2.70 × 10-4 g and 2 decimal places in 4.21 × 10-3 g, so, the least number of decimal places is 2 and that should be the number of digits to the right of the decimal point in the result.
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Answers
Answer:
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Voltaic cells or galvanic cells are electrochemical systems in which electrical energy is produced through spontaneous chemical reactions. Redox (reduction-oxidation reactions) processes forms the basis of voltaic cells.
Oxidation which involves loss of electrons takes place at the anode. These electrons move to the positive cathode where reduction or the gain of electrons takes place. The movement of electrons from the anode to the cathode generates electrical energy. Thus, chemical is spontaneously converted to electrical energy.
In a voltaic cell, chemical energy is converted to electrical energy, spontaneously because the redox reaction that takes place in the cell is spontaneous. So correct option is 1.
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The conversion of chemical energy into electrical energy in a voltaic cell is a spontaneous process. This means that it happens without any outside intervention. The electrons in the cell move from one electrode to another because they are attracted to the oppositely charged electrode.
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