Calculate (a) Henry's constant, KH, for H2S. Note that KH = K for the reaction, H2S(g) ~ H2S(aq) (b) The ·partial pressure of H2S(9) overlying the water if the total soluble sulfide concentration, CT, S ~ [H, S""J + [HS-J + [S'-J, is I X 10-3 M and the solution pH is 8.5. A

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

Liquid from a brewery fermentation contains 10% ethanol and 90% water. part of the fermentation product (50,000 kg/h) is pumped to a distillation column on the factory site. under current operating conditions, a distillate of 45% ethanol and 55% water is produced from the top of the column at a rate of one-tenth that of the feed. what is the composition of the waste "bottoms" from the still?