Elements that easily give up electrons are called ? a metals b metalloids c nonmetals d noble gasses

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0