Which statement is a biconditional statement formed from : I will pass Geometry if I complete my homework correctly.

A. I will complete my homework correctly if, and only if, I will not pass Geometry.

B. I will not complete my homework correctly if I will not pass Geometry.

C. I will not pass Geometry if I do not complete my homework correctly.

D. I will pass Geometry if, and only if, I complete my homework correctly.

E. I will complete my homework correctly if I will pass Geometry.

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?