For the following reaction at equilibrium: 2SO2(g) + O2(g) = 2803(9) AH = -192.31 kJ , what
would happen with an increase in concentration of oxygen
gas?
a Equilibrium shifts towards the products
b Equilibrium shifts towards the reactants
C No change
d All of the above

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Scientists often deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each of these numbers in an alternate form.

Why are enzymes important to cells? they bring about chemical reactions. they provide structural support. they form the two layers of membranes. they store large quantities of energy.