When 500 ml of 0.100 magno3 is combined with 500 ml of hcl in a coffee-cup calorimeter, the temperature changes from 23.40 ? c to 24.21 ? c. calculate ? hrxn for the reaction as written. use 1.00 g/ml as the density of the solution and c=4.18j/(g? ? c) as the specific heat capacity.

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?

If maltose undergoes hydrolysis what subunits does it results to?