Copper is listed in the 29th position in the periodic table. it’s used for conducting electricity. what is copper?

Find the protons, electrons and neutrons for strontium with a mass of 83

What’s a special glass that most beakers are made of

Match term definition ellipse a) diagonal cross section of a cylinder circle b) diagonal cross section through the widest part of a sphere sphere c) cross section parallel to the base of a cone great circle d) shape created when a semi-circle is rotated around the y-axis triangle e) perpendicular cross section of a cone