SITHCCC030 Service Planning Template

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when drawing melting point composition diagram for a mixture of something such as cinnamic acid and urea comparing melting point vs composition for organic chemistry, if i have three different compositions (1:4, 4:1,1:1) should i have 3 different graphs or would this all be on the same graph? and how do i convert grams to moles for example for composition 1:4 my data was 0.8003 g : 3.1917 g?

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1. Determine the maximum mass of aspirin that can be made from the amount of salicylic acid you used. mass (salicylic acid) = 2.004 grams %3D 2. Determine the maximum mass of aspirin that can be made from the volume of acetic anhydride acid you used. Hint: you need the density of acetic anhydride. volume (acetic anhydride) = 4.872 mL 3. Indicate which of the above amounts represents the theoretical yield. 4. Find the actual amount of aspirin produced from the following data: mass aspirin and crucible = 3.216 g 0.942 g mass empty crucible = 5. Calculate the percent yield of your aspirin.

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Your 50 mL beaker has a mass of 6.65 g. You add 10.00 mL to the 50 mL beaker and now the total mass is 17.45 g. You originally used 5.14 g of NaCl to make the solution. What is the percent composition of your solution? These calculations are described in the lab procedure in detail.

EXPERIMENT : GRAVIMETRIC ANALYSIS OF PHOSPHORUS IN PLANT FOOD Aim: To determine the amount of phosphorus in a commercial plant food   I want the Calculations for this experiment

2) Calculate the %Yield of the 4 fractions based on the following numbers. Compare these numbers with your optical result (inspection of the amount of material on the bottom of each Erlenmeyer flask). Crude fraction from 1 egg 1.28g %Yield Fraction 1 0.3 g Fraction 2 0.42 8 Fraction 3 0.41 8 Fraction 4 0.12 g

A pharmacist wants to use three lots of zinc oxide ointment containing, respectfully, 40%, 30%, and 10% of zinc oxide. In what proportion should they be mixed to prepare a 20% zinc oxide ointment? A) 1:1:5 B) 1:3:4 C) 1:1:3 D) 1:3:1

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Please answer all items will give you thumbs up and good rating. Each item consists of two statements (I and II). Identify if each statement is either true or false, then select the appropriate answer from the choices.

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In Part A you will be performing several mass measurements. What are two precautions you must observe when using the electronic balance?

Solve using dimensional analysis. Show the complete solution. Do not round off nonfinal answers.

Using the given information Mass CuCl2 . 2H2O = (2.20x10^0) g Mass Aluminum = (1.800x10^-1) g Volume of water = (8.600x10^1) mL ** Project info is not NECESSARY ! If you know chemistry then just answer the question or give it to someone who does Use the values generated by this question to calculate the theoretical yield of copper in grams. Input the answer in this quiz to three significant figures and in scientific notation to check your answers. In scientific notation please

Subpart 1-3 this is not a graded question.

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4.Porosity is a measure of the void or empty spaces in a material and is a fraction of the volume of voids over the total volume. The density of the solid material used to create 11 pieces of 0.63 cm diameter and 1.11 cm height cylindrical beads is determined to be 1.71 g/ml. These beads were then placed in a flask and was filled to the 49 mL mark with a salt solution. The total weight measured of the beads and the salt solution was 56.78 g. Upon further inspection, it was found that manufacturing defects caused the measured porosity of the beads to be at 29%. Assuming that the solution was able to fully fill the empty spaces inside the beads, calculate the density of the salt solution. Show your solutions Round your answer to 2 decimal places, 5. A chocolate manufacturing plant produces chocolate coated macadamia nuts. One specific batch of chocolates weighed an average of 4.55 g for each piece. It was found out that the macadamia nuts used in the batch had three total defects wherein…

You are working at a hospital, and there is a problem. This week the required supply of glucose solutions did not arrive. The nurses need to prepare glucose solutions of different concentrations from two stock solutions that were available at the hospital from last week: 2.5 % and 20% (see note below about these % concentrations). Calculate the volume of stock solutions that need to be used to prepare 300 mL of glucose solution with a concentration of 8%. Note: these concentrations are grams of glucose per 100 ml of water, i.e., 5% means 5 grams of glucose dissolved in 100 ml of water.

Zinc (Zn) Zn Copper (Cu) 9.59 g mass The ammeter completed the run time for this experiment. Record the final mass values for each electrode in your notes. Click the RERUN button on the ammeter to readjust the ammeter settings and run another experiment without changing the electrode metals. 10.41 g mass Click the RESET button on the ammeter to start a new experiment. Macroscopic View Zn(NO3)2 (aq) Calculate the moles of Zinc deposited. moles Submit Answer format: Number: Round to: 5 decimal places. Show work RERUN O RESET O OFF ON 6.00 VOLTS 02.00 00:00 AMPS TIMER (MIN) DC Ammeter Standard Reduction Potentials (Eº)

Answer the three following questions by using the chart for reference. Please type instead of showing the work handwritten, I’m bad at reading hand writing.

Choose the one correct or one incorrect statement regarding the technique of weighing by difference:      the weighing beaker should be moved with a strip of paper used as a handle or strap      preparing 4 samples requires only 4 weighings      the balance should be tared after each sample is removed from the weighing beaker      the weighing beaker must be clean but does not need to be dry      the receiving flasks must be both clean and dry before weighing begins

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Fill in the Blanks Chemical Price/kg (in dollars) NaOH 21.17 CaCl2 41.28 КОН 31.38 CUSO4 93.32 NH4NO3 59.64 NH4CI 25.04 NaCl 21.15 NaNO3 72.35 Type your answers in all of the blanks and submit Another requirement is that the cost of the salt needs to be evaluated to determine if it is economical to use. To do this, you should consider the price per degree of dropping the temperature of the solution. The table of prices per kg for each salt is shown above. Let's determine the cost for the NaOH solid as an example. We want to determine how much it costs to change the temperature by 1 deg C so we start with the cost given in the table and end with $/deg C. For NaOH: 21.17 $/ 1 kg) X ( 1 kg/ 1000 X ( Type your answer here g/ Type your answer here deg C) Please type your answer to submit Please type your answer to submit Type your answer here $/deg C