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What is the difference between Homogenous mixtures and Heterogenous mixtures?
A pure substance or a homogeneous mixture consists of a single phase. A heterogeneous mixture consists of two or more phases. When oil and water are combined, they do not...
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How many grams of oxygen will react with 25.0grams of aluminum?
How many grams of aluminum oxide will be produced by the reaction in equation number 2?
Grams of aluminum oxide produced =12.57g
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Rubbing alcohol, C3H7OH, is sold as a 70.0% v/v solution for external use only. What volume of pure rubbing alcohol is present in a 500-mL bottle
Volume/volume percent = x 100 %Volume of solute =volume of solute Volume of solution Volume/volume % x volume of solution 100%{70% x 500 m L}÷100%= 350 m L350 m L...
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<ol><li>10 mol of Zn react with 10 mol of HCl. Calculate the number of moles of H2 produced.</li></ol> (a) 5 mol (b) 10 mol (c) 20 mol (d) 2.5 mo
ANSWER SHOUD BE "a".EXPLANATION ......Zn reacts with HCl and form ZnCl2 and H2 .Balance Reaction is Zn + 2HCl ----- ZnCl2 + H2 .When 10 mol of Zn react with...
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50.0 g of ice was initially at −4.0°C and 1 atm. At 1 atm, it absorbed some heat and became 20.0 g of ice and 30.0 g of liquid water in equilibrium with each other. How much heat was absorbed?
Let’s first consider the processes that occurred with the initial ice. Firstly, the ice was heated to 0°C (melting point of water). Then, the part of ice melted to form...
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What volume of 0.10NH2 SO3 will be required to neutralize a solution containing 10.0grams of Ca(OH)2?
Volume of 0.10NH2 SO3=236mL
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Write only one essential difference between the three groups: a. Homogeneous mixtures. b. Heterogeneous mixtures. c. Chemical compounds.
The chemical compound is the substances that are formed by combining two are more chemical elements. A mixture is a substance created from two or more matter that can be...
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From an initial mix of: 2 mol Cl2, 1 mol Br2, 0.5 mol I2, 0.5 mol Cl−, 1 mol Br−, 2 mol I−; the total quantity of I2 present after all possible reactions occur is
0.5 mol I2 and 0.5 mol Cl- will not react with anything; 2 mol I- will react with one mol of Cl2 producing one mol of I2: 2I- + Cl2...
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How much energy is removed when 433 g of steam (MW = 18.02 g/mol) is cooled to 70.0 °C? ΔHfusion = 6.01 kJ/mol, heat capacity = 75.3 J/(mol °C), and ΔHVAP = 40.6 kJ/mol.
388.0188 kJ
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the vapor pressures of pure propyl alcohol and isopropyl alcohol are 21.0 mmHg and 45.2 mmHg. respectively, above a solution in which the mole fraction of isopropyl alcohol is 0.750
Pressure is directly proportional to MoleTherefore,P = knk= P/nP1/n1 = P2/n221.0 mmHg / x = 45.2 mmHg/0.750x = (21.0 mmHg * 0.750) / 45.2 mmHgx= 0.35 (pure propyl alcohol mole ratio)
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