Select all that apply. When the products of a reaction have a lower enthalpy than the reactants .
[ ] The reaction is endothermic.
[ ] The reaction is exothermic.
[ ] The change in enthalpy is positive.
[ ] The reactants lost internal energy.

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Which of the following units is not an official si unit

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by