Which molecules is amphoteric? a) nh4+b) h2oc) h2co3-d) h2so4

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

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

At 450 mm hg a gas has a volume of 760 l, what is its volume at standard pressure