Prelab Assignment: a) Balance the reaction below: BT2 ΔΗ'--100.18 kJ + b) How much energy will given off when off when 0.0664-g of bromine if formed? c) How many grams of chlorine gas will be needed to produce 80.5kJ? Use the thermochemical equations shown below to determine the enthalpy for the reaction: P4(s) + 6C12(g)--4PC13(g) 2. 4 PCIs(g)- P4(s) + 10 Cl2(g) PCI3(g) + Cl2(g) → PC15(g) H-1528KJ H=-111KJ

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Introduction to chemistry

Chemistry is a branch of science that deals with the analysis of material and the substances that comprise it. It also manages the properties of these substances and their reactions to form new substances. It is basically centered on particles and atoms that make up components and mixtures. These chemical species will in general connect using bonds.