An inexpensive home theft deterrent is leaving a front outside light on all night. If you were to leave a 15 watt LED light on outside every night for 12 hours, and for 30 days, what would it cost if the current rate for electrical energy is $0.010/kw-hr?

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?

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages

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