A flexible balloon containing 3 L of hydrogen gas at 27 °C and 101 kPa was allowed to ascend through the atmosphere. At some height in the stratosphere when the pressure was 2.1 kPa and the temperature was 2 °C, the volume of the gas in the balloon would be A.(3×27×101)/2×2.1
B.(3×300×101)/(275×2.1)
C.(3×300×2.1)/(275×101)
D.(3×275×101)/(300×2.1)

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Consider the reaction: n2(g) + o2(g) ⇄ 2no(g) kc = 0.10 at 2000oc starting with initial concentrations of 0.040 mol/l of n2 and 0.040 mol/l of o2, calculate the equilibrium concentration of no in mol/l how would this be done?

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?