An element ‘X’ reacts with oxygen to form an oxide with the formula ‘X2O’. The oxide is soluble in water and turns red litmus blue. Identify whether ‘X’ is a metal or a non-metal. Justify your answer.

the product of the pressure and volume is also constant

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.