When a 2.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity of 0.854 kJ⋅K−1, the temperature decreases by 0.310 K. Calculate the molar heat of solution of RbBr.

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

The reactions of photosynthesis occur in the of plant cell? a.mitochondria. b. lysosomes. c. chloroplasts. d. chlorophyll