2Na + 2H2O → 2NaOH + H2 What is the total number of moles of hydrogen produced when 4 moles of sodium react completely?

A. 1 B. 2 C. 3 D. 4

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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

According to the kinetic-molecular theory, what happens to a liquid when it is transferred from one container to another? the volume and the shape stay the same. the volume increases to fill the new container, but the shape stays the same. the volume stays the same, but the shape changes to fit the new container. the volume and the shape change to fill the new container.