A sample of bismuth undergoes a temperature change of -3.15 °C while releasing 176.2 calories of heat. The specific heat capacity of bismuth is 0.029 cal/(g-°C). What is the mass of this sample?

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What is the molar mass of ca(cio4)2

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .