Calculate the pH of `10^(-3)` M HCI.

Nalorphene (C_19H_21NO_3) , similar to morphine, is used to combat withdrawl symptoms in narcotic users. Dose of nalrophene generally given is 1.5 mg. Calculate the mass of 1.5xx10^-3m aqueous solution required for the above dose.

Calculate the depth of water at which an air bubble of radius 4xx10^-4 m may remain in equilibrium( surface tension = 70xx10^-3 N/m).

A ball is dropped from a height of 20m. it rebounds to a height on 10m. Calculate the loss of energy of the ball

What do you mean by pH of solution? Calculate the pH of solution containing 0.98g H_2SO_4 in 100mL of water.

Calculate the number of moles in 1m^3 of gas at N. T. P

Light enters from air to diamond which has refractive index of 2.42. Calculate the speed of light in diamond . The speed of light in air is 3.0 xx 10^8 m s^-1

A disc of mass 5 kg radius 0.5 m rolls on the ground at the rate of 10 ms^(-1) . Calculate its KE.

Calculate the number of moles in 10g of CH_4 .

Calculate the pH for following half cell reaction ptH_2( 1 atm)//H^+(HCl) , E_(H_2 / H^+) =0.25V .