The chemical equation below is unbalanced. What is the coefficient of water when

Question

The chemical equation below is unbalanced. What is the coefficient of water when the equation is balanced? Mg(OH)_2(s) + HCl(g) rightarrow MgCl_2(s) + H_2O(l) 2 1 3 4 No coefficient would be shown. Aluminum metal and oxygen gas are produced when aluminum oxide is heated at high temperature, AlO_3(s) rightarrow Al(s) + O_2(g). Which statement concerning this chemical change is true? Aluminum and oxygen are the reactants in this reaction. This reaction is a combination reaction. Aluminum oxide is the product in this reaction. This reaction is a combustion reaction. This reaction is a decomposition reaction. Consider the chemical equation shown below. How many motes of oxygen gas are needed to react with hydrogen to form one mole of water? 2H_2(g) + O_2(g) rightarrow 2H_2O(l) 5 mol 0.5 mol 4mol 1 mol 3mol Glucose (C_6H_12O_6) is an important energy-rich compound produced by photosynthesis according to the equation below. What mass of glucose can be produced from 2.61 mol of CO_2 and the necessary water? (Molar masses of Glucose is 180. g/mol) 6CO_2(g) + 6H_2O(l) rightarrow C_6H_12O_6(l) + 6O_2(g) 0.0869 g 78.3 g 414 g 69.0 g 0.0128 g Upon mixing a clear colorless NaCl solution with a clear, colorless AgNO_3 solution according to the reaction below, a student observes a white cloudiness form. What is responsible for the cloudiness that is observed? NaCl(aq) + AgNO_3(aq) rightarrow AgCl(s) + NaNO_3(aq) NaCl AgCl NaNO_3 AgNO_3 It is impossible to tell

Explanation / Answer

8) A) Beakers A and B contains equal number of atoms.

Reason _According to Avogadro's law ,one mole of any substance (elements like Fe,Pb ) contains equal number of particles equal to 6.022*10^23 particles(atoms)

9)Mg(OH)2(s)+2HCl(g)--->MgCl2(s) + 2H2O (l)

A)2

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