a student performed an experiment, using a cocktail peanut, before it was burned the peanut half weighed .353 g. After burning the residue weighed .016 g. The energy released by the conjunction increased the temperature of 200. mL of water in the calorimeter by 7.2 degrees Celsius. Calculate the mass of peanut consumed in the combustion.

Agroup of students working in a high school chemistry lab believe they have discovered a new element! how exciting? upon further testing by scientists (with better equipment), it is found that the new element contains 74 protons and 110 neutrons. what is the atomic number? what is the mass number? is this a new element? explain. give the name and symbol for this element. is it solid, liquid, or gas? explain