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How much does one gallon of zero humidity and pollutant free or pure clean and dry air at STP weigh?

At STP, the density of dry air is m/V = p / RT = 101325 N/m2 * 1 m3 / (287 J/kg-K * 273.15 K) = 1.2925 kg/m3. How much one gallon weighs is a simple matter of the volume ratio of one gallon to one cubic meter, so this question doesn't have to be answered again for a different volume.


What is the equivalent resistance when R1 equals 1 ohm and R2 equals 3 ohm whose total resistance equals R1 R2?

The equivalent resistance in a parallel circuit is given by the formula: 1/Rt = 1/R1 + 1/R2. Plugging in the given values (R1 = 1 ohm, R2 = 3 ohm), we get 1/Rt = 1/1 + 1/3 = 4/3. Therefore, the total resistance (Rt) is 3/4 ohm or 0.75 ohm.


If a room has an absorption of se13 sabines and the volume of the room is 300 meters cubed what is the reverberation time in this room?

A Sabine is 1 metre sqaured of perfect absorption. Sabines formula for reverb time states: Reverb Time = (0.16 x Volume) / Absorption Therefore RT = (0.16 x 300)/13 = > 3.7 seconds. Reverb Time is usually calculated for each octave or third octave band of a frequency spectrum.


What is the relationship between pressure, density, temperature, and the gas constant in the ideal gas law equation p RT?

In the ideal gas law equation p RT, pressure (p), density (), temperature (T), and the gas constant (R) are related. Pressure is directly proportional to density and temperature, and inversely proportional to the gas constant. This means that as pressure or temperature increases, density also increases, while the gas constant remains constant.


How much does 1m3 of ice weigh?

Concrete has a density of approximately 2400 kg/m3.As such the weight of 1m3 of concrete is equal to:2400 x 9.81Weight of 1m3 of concrete = 23,544 Newtons.