Copper if: 67.93% of the time copper atoms have a mass of 62.929 amu and the remaining copper atoms have a mass of 64.927 amu. PLEASE HELP ME

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction

What does the mass of 0.7891 mol of ferric oxide (fe2o3)