Question

. Sea water contains an average of 1.08 3 103
ppm of
Na+ and 270 ppm of SO4^2-. Calculate
(a) the molar concentrations of Na+ and SO4^2- given
that the average density of sea water is 1.02 g/mL.
(b) the pNa and pSO4 for sea water.

Answer 1

Answer:

B . statements given below are incorrect write the correct statement : 1. An aeroplane flying straight to North describes a Periodic motion .

2. A stone thrown upward at an angle.

describes rectilinear motion,

3. A person sitting in moving train is at rest .

with respect to surroundings outside the

train

4. The skin of a drum on hammering produces

oscillatory motion.

5. A hockey player running up and down in the

hockey ground describes a periodic motion