1) Acetylene gas, C2H2, reacts with oxygen gas to producegaseous carbon dioxide and liquid water. a. Write the balanced equation forthis reaction. b. What volume of CO2 is produced atSTP from 5.00 g O2 and 10.0 L of acetylene (at STP)?2) 35.0 mL of hydrogen gas at STP weighs how many grams?3) An unknown gas has a density of 0.714 g/L at STP. What is themolar mass of the unknown gas?
Which of the following pairs of substances presents an example of the Law of Multiple Proportions? a. SO2, H2SO4b. H2O, O2c. H2O, H2O2d. CH4, C6H12O6 e. CH4, CO2
An electric dipole consists of charges +2e and -2e separated by0.71 nm. It is in an electric field of strength 5.0 × 106 N/C.Calculate the magnitude of the torque on the dipole when the dipolemoment is (a) parallel to, (b) perpendicular to, and (c)antiparallel to the electric field.
A certain soft drink is bottled so that a bottle at 25°C contains CO2 gas at a pressure of 5.0 atm over the liquid. Assuming that the partial pressure of CO2 in the atmosphere is 4.0 x 10^-4 atm, calculate the equilibrium concentrations of CO2 in the soda both before and after the bottle is opened. The Henry's law constant for CO2 in aqueous solution is 3.1 x 10^-2 mol/L atm at 25°C.
1. The fatty acid chains of a phospholipid molecule make up thetails of the lipid bilayer of a cell membrane. True False2. All macromolecules share the common feature of being synthesizedby joining subunits or monomers together. The subunits are joinedtogether by thehydrolysis reactiondehydration reactionhydrogen bondingnone of the above3. In the structure C=O, how many pairs of electrons do carbon andoxygen share?onetwothreefour
Rolls of foil are 307 mm wide and 0.016 mm thick. (The density of foil is 2.7 g/cm3.)
What maximum length of foil can be made from 1.31 kg of foil?Express the length to two significant figures and include the appropriate units.