Compare the properties of protons neutrons and electrons

Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.

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

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li