Answer:
N2 is lost from the craft 6.9% faster than O2 is lost.
Explanation:
<u>Step 1:</u> Data given
0.500 atm of N2
0.500 atm of 02
Molar mass of 02 = 2*16 g/mole = 32 g/mole
Molar mass of N2 = 2* 14 g/mole = 28g/mole
<u>Step 2:</u> Calculate the rate of loss
r1N2 / r2O2 = √(M2(02)/M1(N2)) = √(32/28) = 1.069
1.069-1)*100= 6.9%
This means N2 is lost from the craft 6.9% faster than O2 is lost.
<h2>Example of Physical change </h2>
Ice forming and then melting back into water are an example of physical change because the nature of water is liquid. Yet when it freezes then it becomes into solid form. The water which is liquid then freezes to form ice form which is as a solid which is also a physical change.
If we see that when ice which is frozen and in solid form starts to melt by heat then it converts into water which is liquid form. This indicates that water freezes to form ice means liquid to solid therefore its shape changes which is a physical change. When ice melts it becomes solid to liquid it also changes shape and subsequently takes a physical change.
Answer:
3185 metres
Explanation:
The average speed is calculated using the formula Speed = distance/time. The distance is in metres while the time is in seconds.
According to this question, reaches terminal velocity at 91 meters per second
The heat of a reaction can be calculated from the heat of formation of each substance in the reaction. It is calculated as the sum of the heat of formation of each substance.
<span>C2H2+2H2----> C2H6 ∆H = (-94.5kJ)
2(H2O ----> H2 +1/2O2) ∆H = 2(71.2kJ)
C2H6 + 7/2 O2 -----> 2CO2 + 3H2O ∆H = (-283kJ)
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C2H2 + 5/2O2 = 2CO2 + H2O </span> ∆H = -235.1 kJ
4CO2 + 2H2O = 2C2H2 + 5O2 ∆H = 470.2 kJ
