Andrea is trying to identify an unknown element the element is shiny but it shaders when hit with a hammer and cannot be hammered into different shapes where on the periodic table would this element most likely found A. along the metalloid stairstep line
B. on the right side
C. on the left side
B. in one of the series below the main body of the table

What diagram shows the ionic compound of magnesium oxide

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

Why are people not able to skip a dive to the deepest part of the ocean