When dolomite is heated for an extended period of time at elevated temperature it decomposed to give carbon dioxide and a mixture of calcium oxide and magnesium oxide. What is the final temperature of the metal and the water? A sample of water is heated from 35 C to 45 C with joules. What is the mass of the sample?
A gram sample of water has an initial temperature of 25 C. If 20 grams. What is the final pressure of the gas? Insulated vessel has two compartments separated by a membrane. One side is 1 kg of steam at C and bar. The other side is evacuated. The membrane ruptures filling the entire volume. The final pressure is bar.
Determine the final temperature of. Ammonium carbonate solid decomposes when heated to produce three gaseous products - ammonia, water, and carbon dioxide. Write the balanced equation for the reaction. Suppose that ammonium carbonate is heated to K in a sealed vessel.
Gravimetric analysis does not always involve a precipitate. Consider the following problem. A mixture of calcium carbonate and calium oxide has a mass of 8. A balloon has a volume of 0. Assume constant pressure and mass. Write the net ionic equation for the reaction. Do not forget to. The vase company designs a new vase that is shaped like a cylinder on bottom and a cone on top.
The catalog states that the width is 12 cm and the total height is 42 cm. What would the height of the cylinder part have to be in order for the total volume to. The sample is 2. I need an amount in grams. The density of pure copper is 8. If the height of the cylinder is twice its diameter, find the dimensionsof the cylinder.
A solid cylinder is mounted above the ground with its axis of rotation oriented horizontally. A rope is wound around the cylinder and its free end is attached to a block of mass The cylinder has a mass of kg and a.
A sample of gas in a cylinder of volume 3. Path A is an isothermal, reversible expansion. Calculate the work for Path A. Find the rule for the volume of a cylinder in terms of r only if the height is equal to its circumference. The surface area of a cylinder is 2pi square units. Find a rule for h in terms of r.
Complete decomposition of a sample of potassium chlorate produced 1. The combustion of a A separate analysis showed that the sample contained If the sample is known to contain only C, H, Cl, and N, determine the percent composition and the empirical formula of the herbicide. If the sample is known to contain only C, H, O, and N, determine the percent composition and the empirical formula of the antidepressant. Percent composition: Skills to Develop To relate the amount of gas consumed or released in a chemical reaction to the stoichiometry of the reaction.
To understand how the ideal gas equation and the stoichiometry of a reaction can be used to calculate the volume of gas produced or consumed in a reaction. Introduction With the ideal gas law , we can use the relationship between the amounts of gases in moles and their volumes in liters to calculate the stoichiometry of reactions involving gases, if the pressure and temperature are known.
Given: reaction, temperature, pressure, and mass of one product Asked for: volume of gaseous reactant Strategy: A Calculate the number of moles of H 2 SO 4 in 1. Exercise 6. Answer: Collecting gases over water As shown in Figure 6. Example 6. Given: reaction, mass of compound, temperature, and pressure Asked for: volume of nitrogen gas produced Strategy: A Calculate the number of moles of N 2 gas produced. Answer: 0.
Summary The relationship between the amounts of products and reactants in a chemical reaction can be expressed in units of moles or masses of pure substances, of volumes of solutions, or of volumes of gaseous substances. Conceptual Problems Why are so many industrially important reactions carried out in the gas phase? Numerical Problems Balance each chemical equation and then determine the volume of the indicated reactant at STP that is required for complete reaction.
What is the mass of KClO 3 in the original sample? What is the pH of the buffer? If mL Br2 g at C and mmHg produced 4. What weight of hydrogen would have to be carried by a hiker to generate kJ of heat in order to bring 1. An analyst dissolved A commercial osmometer determined the osmotic pressure was 0. What is the approximate molecular mass of the protein? When cooking pasta, some people add table salt NaCl to shorten the cooking time.
Calculate the elevation of the normal boiling point of water when 8. The organic product of cyclohexene reacting with molecular hydrogen in the presence of a catalyst can be described as a b c d e an alkane a cycloalkane a cycloalkene an alcohol a polymer.
Which of the following compounds or mixtures would give a basic aqueous solution? What is the density of laughing gas, dinitrogen monoxide, N 2 O, at a temperature of K and a pressure of Calculate the density of Freon 12, CF 2 Cl 2 , at Which is denser at the same temperature and pressure, dry air or air saturated with water vapor?
A cylinder of O 2 g used in breathing by emphysema patients has a volume of 3. If the temperature of the cylinder is What is the molar mass of a gas if 0.
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