5. 21 g of mgso₄ is placed into 100. 0 ml of water. The water's temperature increases by 6. 70°c. Calculate ∆h, in kj/mol, for the dissolution of mgso₄. (the specific heat of water is 4. 184 j/g･°c and the density of the water is 1. 00 g/ml). You can assume that the specific heat of the solution is the same as that of water.

All of the following are examples of service-learning opportunities except: a. donating time to senior citizen war veterans and writing a report about the experience for your u.s. history class. b. getting a part-time job at a habitat restoration center. c. reading to second-grade students as part of your assigned reading time for your english class. d. planting trees in your community and then discussing global warming in your science class.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Which early modernism trend in art focused on prehistoric or exotic cultures? a. primitivism b. expressionism c. impressionism d. total serialism