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A container with a volume of 14 L filled with gas at 2.00 atm at 283k. What will be the new pressure temperature increase to 321k?
A 300f capacitor separated by a distance of 4.0mm was charged to a potential difference of 250 V. What is the energy density in its region in terms of jouled/m³
Find the ∆E
a) When 175J of work is done on a system that evolves 50J of heat to the surrounding. b) When a gas absorbs 28kJ of heat and 13kJ of work done on it.
A system absorbs 50J of heat during a transformation. Determine the change in internal energy if the system perform, (a) 15J and (b) 65J of work on the surrounding.
Determine the Oxidation State of the highlighted element below.
H₂ PO₄-
Solution:
Given the following thermochemical equations:
1.) 4NH3(g) + 302(g) → 2N2(g) + 6H₂0(l) ∆H°-1531 kJ
2.) N₂O(g) + H₂(g) → N2(g) + H₂O (l) ∆H°-367.4 kJ
3.) H₂(g) + O2(g) → H₂0(l)
∆H°= -285.9 kJ
Find the value of ∆H° for the reaction:
2NH3(g) + 3N₂O(g) → 4N₂(g) + 3H₂0 (l)
The fundamental economic problem society is confronted with involves ___________.
a. ensuring they get what they want
b. ensuring the lowest possible satisfaction of needs with these scares resources
c. choosing how it will use its scarce resources to the maximum effect in order to satisfy its needs
d. making as much profit as possible regardless of the needs of society
What is the magnitude of the force on a charge of +2x10-7 C that is 0.3 m from a charge of -5x10-7 C?
molar mass of KCI
Deregulation within the airline industry was introduced in South Africa in 1991. Before deregulation, South African Airways (SAA) was the only service provider on the main domestic airline routes as well as the international airline routes. The first decade after deregulation resulted in a wave of low cost airline competitions such as Flitestar, Sun Air, Phoenix Air, Nationwide, 1time and Velvet sky entering the domestic market.
SAA functions within a free-market economy, which is characterised by which of the following attributes?
a. Private ownership of production factors
b. Free competition
c. Profit motive recognised
d. Limited right to strike in state enterprises
#340153 on Dec 2023