Calcular el calor requerido para elevar la temperatura de 800 gr. de estaño de 25 °C a 60 °C (Ce = 0,055 cal/gr.ºC)

Evaluate this exponential expression,8. (2 + 3)2 – 42

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams