Electrictity is produced ina hydroelectric plant when moving water turns a turbine which describes this energy transformation from the turing turbine to electricity A. Mechanical energy into electric energy B. Nuclear energy into electric energy C. Thermal energy into electric enrgy D. Chemical energy into electric energy

answer; i believe that the correct answer is (a) potassium(k)

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.