Read the following passage. A chemist is working in a foods lab and is trying to determine heat of combustion when a food item is combusted. When a 22.3 g sample of olive oil s burned in a calorimeter, the heat released increases the temperature of 370 g of water from 34oC to 38.8oC. What was the beginning temperature of the experiment?

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

What are transitions between a liquid and a solid called? identify which way they are transitioning

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.