How many kJ are needed to heat 300.0 g of ice at -5.00°C into steam at 100.°C?

If i had 2 m naoh solution, what does the 2 m stand for? 2 molar, but 2 of a solute in 1

The bohr model of the atom explained why emission spectra are discrete. it could also be used to explain the photoelectric effect. which is a correct explanation of the photoelectric effect according to the model?

In order for a high temperature boiler or steam engine to produce superheated water, or steam: the heat source must be greater than 100°c the water must be permitted to evaporate quickly the system must be sealed and become pressurized above atmospheric pressure the vapor pressure must be kept below 760 mm(hg)