If a neutral atom of boron (b) contains 5 protons, 5 electrons and 6 neutrons, what is the mass number of this atom? (2 points) 21 11 10 5

what is the density of an object that has a mass of 10 g and a volumeof 5 ml? a. 0.5 g/ mlb. 2 g/mlc. 15 g/ mld. 50 g/ ml

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

How much energy is made when a pice of wood burns. how do you know