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When hydrogen sulfide gas is bubbled into a solution of sodium hydroxide, the reaction forms sodium sulfide and water. How many grams of sodium sulfide are formed if 11.78 g of hydrogen sulfide are
at 25 C and 1.0 atm, .25 g of a gas dissolves in 1.00L of water. what mass of the gas dissolves in 1.00L of water at 25C and 3.0 atm.
Which of the following compounds is a strong electrolyte?
PCl3(g) + Cl2(g) PCl5(g) is 49 at 230°C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl3 when equilibrium has been
If oxygen gas were collected over water at 22 C and the total pressure of the wet gas were 650 mm Hg, what would be the partial pressure of the oxygen?
Its combustion produces carbon dioxide gas, liquid water, and nitrogen gas. What is the coefficient of aspartame in the balanced equation for the reaction?
Calculate moles of Fe used from the mass of Fe used and the molar mass of Fe.
A cannonball made of iron has a volume of 115 cm3. If iron has a density of 7.86 g/cm3, what is the mass in grams of the cannonball?
A 20.0-rnL portion of pineapple juice was placed in a flask with 20 mL of 0.5M H2S04, Then 2 g of potassium iodide and 20.17 mL of 0.02001M potassium iodate were added to the sample. Titration with
If one ice cube has a mass of 62.0 g, and a tray contains 16 ice cubes, what quantity of energy is required to melt a tray of ice cubes to form liquid water at 0°C?
What is the total pressure in of the mixture after it is placed in a container one-half the volume of the original container? (Temperature remains constant.)
Solid aluminum reacts according to the balanced equation. If a total of 830 kJ of heat is produced in the reaction as written, how many moles of Al2S3 are produced?
The volume of sea water displaced by the plastic block is 3.35 cm3. Assuming the density of the sea water is 1.025 g/mL, what is the density of the plastic?
Why do experimenter says "The reaction is most easily controlled when acetanilide is in the form of a hard cake, the dried solid is melted, as the melt cools, the flask is swirled to distribute the ma
A 5.0 mL sample of vinegar was titrated with 7.2 mL of 0.55 M NaOH(aq). If the density of the vinegar solution is 1.00 g/mL, what is the mass percent of acetic acid present?
A 36.4 l volume of methane gas is heated from 15 degrees C to 98 degrees C at constant pressure. What is the final volume of the gas?
How to calculate the volume of 1.5M aqueous pottasium hydroxide require to react completly with 2g of benzoic acid and extract the solution twice using the volume calculated?1
How do you calculate the density of metals? Could this method be used for determining the density of mercury as well? Briefly explain your answer.
At 600 degrees C, the equilibrium constant for the reaction 2HgO(s) --> 2Hg (l) +O2 (g) is 2.8. Calculate the equilibrium constant for the reaction 1/2)O2(g) + Hg(l) --> HgO (s)
What is the theoretical yield of vanadium that can be produced by the reaction of 40.0 g of V2O5 with 40.0 g of calcium based on the following chemical reaction?
Calculate the minimum number of grams of C3H8(g) that must be combusted to provide the energy necessary to convert 1.61 kg of H2O from its solid form at -10.0°C to its liquid form at 80.0°C
How do the properties of iron alone compare with the iron in an unheated iron-sulfur combination?
The most common source of copper is the mineral chalcopyrite. How many kilograms of chalcopyrite must be mined to obtain 320. of pure copper?
If 24g Mg is used and the percentage yield is 95%, how many grams of magnesium hydroxide should be recovered?
In the following reaction, identify the oxidized reactant, the reduced reactant, the oxidizing agent , and the reducing agent.2Al + 6HCl 2AlCl3 + 3H2