What is the empirical formula and molecular formula for lactic acid if the percent composition is 40.00% C, 6.71% H, 53.29% O, a

• A gas at 5.00 atm pressure was stored in a tank during the winter at 5.0 °C. During the summer, the temperature in the storage area reached 40.0 °C.
• A sample of CaSO4(s) is placed in a container and then heated so that it decomposes according to the following equation:
• Iron(III) oxide can be reduced by carbon monoxide. FezO3(s) + 3 CO(g) = 2 Fe(s) + 3 CO2(g)
• The activation energy for the decomposition of N2O4 is 57.2. kJ/mol. If the rate constant for the reaction is 3.4 x 104s-1 at 25 ºC
• The solubility of a gas in water at 25 C and 7.05 atm pressure is 0.924 mol L-1. Determine the solubility of this gas
• chemistry homework questions and answers
• Suppose that 50% of first year college students take a mathematics course, 40% take a biology course, and 20% take both mathematics and biology during the first year.
• Sodium bicarbonate is reacted with concentrated hydrochloric acid at 0 °C and 1.00 atm to yield an aqueous solution of sodium chloride
• What is the enthalpy change (H^0) in kJ/mol for the following reaction?