Since 0.5 mol of O2 gives 1 mol H2O ∴ 2 mol of O2 will give 4 mol H2O 15. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Include your email address to get a message when this question is answered. (a) : According to the above equation 1 vol. Bess Ruff is a Geography PhD student at Florida State University. Procedure: You should note that only part of the sample might undergo change and some of the starting material may be leftover—if so, decide if a change has occurred based on whether any of the sample changed. If you continue browsing the site, you agree to the use of cookies on this website. Mass is conserved rather than created or destroyed so when a chemical equation is written, it must be balanced so that there is the same amount of reactants going in as yielded product. Academia.edu is a platform for academics to share research papers. The electrolyte is a paste of KOH and ZnO. Identifying Combination/Synthesis Reactions, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/c\/cb\/Recognize-the-Type-of-a-Reaction-Step-1-Version-2.jpg\/v4-460px-Recognize-the-Type-of-a-Reaction-Step-1-Version-2.jpg","bigUrl":"\/images\/thumb\/c\/cb\/Recognize-the-Type-of-a-Reaction-Step-1-Version-2.jpg\/aid2134817-v4-728px-Recognize-the-Type-of-a-Reaction-Step-1-Version-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"