C12H22011 (s) → 12 Cs) + 11 H2O(g) (a) When sucrose is heated, it decomposes into solid carbon and
water vapor. If 3.98 g of water vapor is collected from this
reaction, how many moles of water vapor were produced? Use
stoichiometry to show your work.
(b) The water vapor is collected at 21.0°C in a 1500.0 mL
container. Calculate the pressure of the water vapor. (4.7)
(c) If the gas collected is placed into a larger 2000.0 mL container,
what would the new pressure of the gas be? Assume that the
temperature and number of moles stays constant. (4.8)

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.