Answer:
- 618.8 J.
Explanation:
- To solve this problem, we can use the relation:
<em>Q = m.c.ΔT,</em>
where, Q is the amount of heat released by steam (Q = ??? J).
m is the mass of the steam (m = 15.5 g).
c is the specific heat of the steam (c of steam = 1.996 J/g.°C).
ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 100.0°C - 120.0°C = - 20.0°C).
<em>∴ Q = m.c.ΔT</em> = (15.5 g)(1.996 J/g.°C)(- 20.0°C) =<em> - 618.8 J.</em>
Answer:The atomic weight is the lower number on each chemical. Fe has a mass of 56, S a mass of 32 and O a mass of 16. As there are four oxygens present in this compound, you multiply 16 by 4 to get 64. Lastly you add all these separate masses together, which gives a total relative mass of 152.
Explanation:
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Answer:
The number of moles = 0.66 mole
Explanation:
Given as :
The volume of container (V) = 10.0 liter
The temperature (T)= 373 kelvin
The pressure of gas (P) = 203 k pa = 2.0034 atm
Let the number of mole = n
Now from at ideal gas law
PV = nRT
Where R = 0.08206 L atm per mol per kelvin
SO, (2.0034 × 10 ) = n × 0.08206 × 373
Or, (20.034 ) = n × 30.608
∴ n =
Or n = 0.654
Hence the number of mole = 0.66 mole Answer
Refrigerant may be of four type such as R-22, R 410A, R- 290, R-417 A
The refrigerator R410A having standing pressure of about 260 psi whereas saction pressure of about 120 to 130 psi and discharge pressure of about 450 to 500 psi.
Refrigerant R-410 is a cooling machine consists of equipments and chillers for air conditioning purpose along with coolant gas. This refrigerant have high cooling capacity which consumes less power. The suction pressure is 118 psi and discharge pressure is 400 psi.