What is primary source

24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. what is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable composition of other elements and minerals. b) its color is different than pure gold. c) the gold atoms are not arranged in a repeating pattern. d) it can be melted and transformed into a different substance.

Who was thomas jefferson and what was his constitution toward the development of the us government

Astudent answers 86 problems on a test correctly and receives a grade of 98% how many problems were worth the same number of points