Methanol is an efficient fuel that can be produced from coal and hydrogen. CH_(2)OH(g) + ((3)/(2))O_(2)(g) to CO_(2)(g) + 2H_(2) O(l) DeltaH = - 764 kJ (a) Find the heat evolved when 110 g of methanol is burnt in excess of oxygen. (b) Calculate the mass of oxygen consumed to produce 975 kJ of heat.

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?