Answer:
The theoretical yield of lithium nitride is 7.52 g.
Explanation:
Moles of lithium =
Moles of nitrogen gas =
According to reaction, 6 moles of lithium reacts with 1 mole of nitrogen gas.
Then 0.6428 moles of lithium will react with:
of nitrogen gas
As we can see that moles of lithium are in limiting amount. So, the moles of lithium nitride will be depend upon the moles of lithium. Hence, lithium is a limiting reagent.
According to reaction,6 moles of lithium gives 2 moles of lithium nitride.
Then 0.6428 moles of lithium will give:
of lithium nitride
Mass of 0.21428 moles of lithium nitride:
0.2143 mol × 35 g/mol= 7.52 g
Answer: D
Explanation: The engine cycle begins with the intake stroke as the piston is pulled towards the crankshaft (to the left in the figure). The intake valve is open, and fuel and air are drawn past the valve and into the combustion chamber and cylinder from the intake manifold located on top of the combustion chamber.
Answer:
Instrumental methods
surface analysis
high performance liquid chromatography
atomic spectroscopy
potentiometry
Classical methods
precipitation titration
gravimetric analysis
Explanation:
Instrumental methods of analysis are those analytical methods in which the responsibility of detection has been removed from human beings and placed on automated instruments while classical methods are those analytical methods in which the responsibility of detection remains the responsibility of human beings.
Many instrumental methods such as HPLC rely on computer screens as readout devices.
There are randomly present acc. to the substance but NVR react with each other
Answer:
protons, neutrons, electrons
