An object is placed 10cm to the right of a double concave diverging lens with a focal distance of 15cm. I. Using ray tracing:
- Find the image distance.
- Give three characteristics of the image (inverted/upright, smaller/larger, virtual/real).
II. Using lens equation:
- Find the image distance.
- Give three characteristics of the image (inverted/upright, smaller/larger, virtual/real).​

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

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?

Acombination reaction is when two or more combine to form one product. a decomposition reaction is when a substance breaks down into two or more simpler substances in a chemical reaction.