If 0.100 mol of hydrogen iodide is placed in a 1.0 L container and allowed to reach equilibrium, find the concentrations of all reactants and products at equilibrium. 2 HI (g) === H2 (g) + I2 (g) Ke = 1.84(10-2 [H2]=[I2]= 1.07(10-2 mol/L, [HI]=7.86(10-2 mol/L 6. A 1.00 L reaction vessel initially contains 9.28(10-3 moles of H2S. At equilibrium, the concentration of H2S of 7.06(10-3 mol/L. Calculate the value of Ke for this system.
The solution turned blue. Fifth, 2.0 grams of 30-mesh zinc metal was added to the solution. The solution was stirred until the solution became clear. When the formation of gas had slowed down, the liquid was decanted into a waste container. (If any unreacted zinc remained, 10 mL of hydrochloric acid would have been added and warmed.)
I think it is essential that the catering service also have that standard. This will ensure that there is no profit loss from make the decision to do these services. In order for them to be competitive they focus on value added services instead of discounting and subtracting profit. Another question could be what the value of the product or service is to the buyer. Kudler Fine Foods has a competitive advantage because customers already use their facilities for parties.
When cooking food staff should check the temperature of the food using a food probe (food thermometer) to make sure that the food is being cooked at the right temperature and to make sure that it is at the right temperature to be fully cooked and to make sure it is the right temperature for human consumption. When staff are cooking different meats there are different
Lab 4: Determination of Percent by Mass of the Composition in a Mixture by Gravimetric Analysis Introduction Thermal gravimetric analysis is used to determine the percent by mass is used to determine the percent by mass of a component in a mixture. When a mixture is heated to an appropriately high temperature, one component in the mixture decomposes to form a gaseous compound. The mass of this particular component is related to the mass of the gaseous compound. In this experiment, the percent by mass of sodium hydrogen carbonate (NaHCO3) and potassium chloride (KCl) in a mixture will be determined. Experimental First, we weighed 2 samples, each has 1 gram of NaHCO3-KCl mixture Second, we put the samples in 2 crucibles (A and B) and weighed them.
Serving sizes are standardized to make it easier to compare similar foods; they are provided in familiar units, such as cups or pieces, followed by the metric amount, e.g., the number of grams. The second key fact is the calories (calories from fat) contained in the item. Calories give a measure of how much energy one gets from a serving of that particular food. The third and fourth facts on a food label are the nutrients, both good and bad. The first nutrients listed are the ones that Americans typically get enough, or too much of.
Add 10mL of unknown salt and water solution. Weigh beaker and solution, record weight. Under a Bunsen burner place the beaker put a thermometer in beaker. Increase in temperature shows that the water is heating up. As the water begins to boil, record the temperature.
20. mol H2 reacts with 8.0 mol O2 to produce H2O. Determine the number of grams reactant in excess and number of grams H2O produced. Identify the limiting reactant. 8.1 g H2 , 2.9 x 102 g H2O 17. How many litres of O2 gas are required to produce 100. g Al2O3?
How many moles of hydrogen gas can be produced when 10.0 g of Zn react with excess HCl? (Hint: you must write a balanced chemical reaction first.) 2. If the pressure is 1.2 atm and the temperature is 20.0ºC, what volume of hydrogen is produced in prelab question #1? 3.
2) Using this data, predict at what temperature the pressure will exceed 10 units If the pressure is 10.1 units, the temperature would be around 732 ° . 3) You may test this prediction but be sure to reset the experiment after the chamber breaks. At 738 °, the pressure was 10.17 *When the temperature is held constant, as the volume increased, the pressure units decreased. Ratio: [4.75 volume: 13.0 unit] --------------------------------------------------------------------------------------------------------------------------------------------------------------------- (3.) Question 7.74 a.