An element has an electron arrangement of 2,8,1. Which group does it belong to?

Your answer should have the same number or significant figures as a he starting measurement. 3201 ml =

Match each object to its description: a. coma of a comet b. comet tail c. oort cloud haze surrounding a nucleus created by solar wind. hypothetical sphere around the solar system

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag