Oxidation of Na(s) in dry air at 1.00 atm pressure generated 98.1 kJ of heat and consumed 25.0 L of oxygen. The reaction product is Na2O(s). What is the internal energy change in the reaction system

Which statements are true about electrolysis? check all that apply. electrolysis requires an acid be present. electrolysis is described by two half-reactions. electrolysis is not an industrial process. electrolysis results in commercially valuable products. electrolysis involves the transfer of electrons. reduction results in the loss of electrons. oxidation results in the loss of electrons.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false