The spectral energy distribution of the sun has a maximum at 4754Å. If the temperature of the sun is 6050 K, what is the temperature of a star for which this maximum is at 9506Å?

At what temperature, the density of water is maximum?

Estimate the average thermal energy of a helium atom at the temperature on the surface of the Sun (6000 K)

Which has maximum internal energy at 290K ?

What is the minimum and maximum temperature on moon ?

At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?

The activation energies of two reactions are E_1 and E_2 (E_1 > E_2) . If the temperature of the system is increased from T_1 to T_2 the rate constant of the reaction changes from k_1 to k_1' in the first reaction and k_2 to k_2' in second reaction, predict which of the following expression is correct ?

Take the data giving the minimum and the maximum temperature of various cities given. Which is the hottest city and which is the coldest city?

The Sun is a hot plasma (ionized matter) with its inner core at a temperature exceeding 107 K, and its outer surface at a temperature of about 6000 K. At these high temperatures, no substance remains in a solid or liquid phase. In what range do you expect the mass density of the Sun to be, in the range of densities of solids and liquids or gases ? Check if your guess is correct from the following data : mass of the Sun = 2.0 xx 10^30 kg , radius of the Sun = 7.0 xx 10^8 m .