A common laboratory reaction is the neutralization of an acid with a base. When 50. 0 ml of 0. 500 m hcl at 25. 0°c is added to 50. 0 ml of 0. 500 mnaoh at 25. 0°c in a coffee cup calorimeter, the temperature of the mixture rises to 28. 2°c. What is the heat of reaction per mole of acid? assume the mixture has a specific heat capacity of 4. 18 j/g·°c and that the densities of the reactant solutions are both 1. 00 g/ml.

According to the passage weisers mother could be blamed for

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?

This graph represents four ecosystems. each ecosystem has a different number of species, adding to its biodiversity. different colors represent different species. which statements correctly summarize the data depicted by the graph? 1. ecosystem d has more biodiversity than ecosystem c. 2. ecosystem b has more biodiversity than all the other ecosystems. 3. ecosystem a has more biodiversity than ecosystem b but less biodiversity than ecosystem c. 4. ecosystem b has more biodiversity than ecosystems c and d but less biodiversity than ecosystem a. 5. ecosystem a has more biodiversity than ecosystem c but less biodiversity than ecosystem b.