Silicon nitrate is made by combining Si and nitrogen gas at high temperature. How much Si is needed to react with an excess of nitrogen gas to prepare 125g of silicone nitrate if the percent yield of the reaction is 95%

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)