6. Among the substances that react with oxygen and that have been considered as potential rocket fuels are diborane Bho, produces B2O3(s) and H2O(g)], methane (CH4, produces CO2(g) and H2O(g)], and
hydrazine N2H4, produces N2(g) and H2O(g)]. On the basis of the heat released by 1.00 g of each
substance in its reaction with oxygen, which of these compounds offers the best possibility as a rocket fuel?
The AH; of B2H6(g), CH4(g), and N2H4(1) may be found in Appendix G.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

How do temperature and salinity affect deepwater currents? as temperatures and salinity levels of water increase, the water rises to the surface where it creates currents as it moves to colder regions. they create changes in wind direction, moving denser water in the same direction as the wind and causing the deepwater circulation patterns found in the ocean. they equalize the forces on undersea currents caused by the coriolis effect as they replace more dense water with less dense water. they create density differences that cause dense deepwater currents to flow toward the equator where they displace less dense, warmer water above them.