Which of the following alkenes reacts fastest with HBr

At 20 °C the vapor pressure of pure benzene (C6H6) is 75.0 torr, and that of toluene (C7H8) is 22.0 torr. Assume that benzene and toluene form ideal solutions.

An ionic compound has a slightly negative heat of solution in water. would you expect it to be soluble or insoluble in water?

Which statement describes both homogeneous mixtures and heterogeneous mixtures? A. Their components can be distinguished visually. B. Their components are combined in a fixed ratio. C. Their components can be separated by physical processes. D.

What does a number pyramid tell you about an ecosystem? The biomass of each trophic level. The number of organisms in each trophic level. The lifespan of organisms in each trophic level. The energy transfer between trophic levels.

Which particle has the larger radius in each atom/ion pair? 14.2 a. na, na+ b. s, s2- c. i, i- d. al, al3+?

A solution is another name for

Which of the following solute and solvent combinations would be most likely to form solutions? Mark all that apply.

0.402 L = 402 mL 0.0202 L = 20.2 mL 3.6 L = 360 mL 11.1 L = 11,100 mL

Which is one possible way the digestive system works together with other body system

Can anyone tell me how to balance chemical equations