Answer: The correct answer would be : True
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Answer:
V=20.2m3
Explanation:
P= 225.4kPa V= ? n= 1.85, T= 22.5+273= 295.5K, R = 8.314
Applying the ideal gas equation
PV=nRT
225.4×V = n×8.314×295.5
V= 20.2m3
Answer:
C.
Explanation:
...........................
The atomic number of a neutral atom is equal to the number of protons and the number of electrons of the atom. The atomic weight meanwhile is equal to the sum of the number of protons and number of neutrons. In this case, the no.of protons is 19 and the number of neutrons is 40-19 equal to 21.