Thermal decomposition of calcium nitrate takes place as follows : 2Ca(NO_(3))_(2) rarr 2CaO + 4 NO_(2) + O_(2). If the relative molecular mass of calcium nitrate is 164. a] Calculate the volume of nitrogen dioxide obtained at s.t.p. and b] the weight of calcium oxide obtained when 164 g of calcium nitrate is heated to constant weight. [Ca= 40, O = 16, N = 14].

What type of questions asked from the lesson of magnetic effect of electric current 

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?