a) I suppose that at first the heat was absorbed to ice to melt, so that's why the temeperature of the mixture didn't raise first two minutes. And i also suppose, that at first the ice and water had same degree ( 0°C).
To know what was the mass of each(because the mass of ice after melting was...
In a thermally insulated container was a mixture of ice and water. Then we have put a immersion heater ( P=400W). We started measure time and at the end of every minute we writed down the heat od mixture. First two minutes the heat wasn't changing, at the end of third it raised about 2°C, at the...