I) Calculate the volume of hydrogen gas
produced at s. t.p., when 30g of zinc is
added to excess dilute hydrochloric acid
at 33°C and 775 mmHg pressure.
H = 1, Zn = 65, Cl = 35.5) molar volume
of a gas at s. t.p. = 22.4 dm').

Which order shows the levels of organization from largest to smallest? organism, organ system, cell, organ, tissue organism, tissue, organ system, organ, cell organism, organ, organ system, cell, tissue organism, organ system, organ, tissue, cell