Copy of 2023 Food Macros Lab Results

Can you help me answer this questions, that question is related to the chart Experimental observation. Low conc solution ____ unknown.    high conc solution____

Please correct answer and don't use hand rating

Based on your observations in this experiments, how might Dye X be useful in a laboratory?  Select one or more: a. In the lab, Dye X could be used to determine the identify of any chemical solution based on color changes. b. In the lab, Dye X could be the control color. c. In the lab, Dye X could be used to identify acids and bases. d. In the lab, Dye X could be used to change the reactions of experiments.

Answer all questions 3 and 4

ANSWER NUMBER 12-15 ANSWER ONLY THEN AFTER THAT PLEASE ANSWER PART 2 ANSWER ONLY

50 Experiment 6 Qualitative Analysis 2. Write the chemical formula for each of the following compounds: a) Iron (III) hydroxide b) Zinc sulfide c) Tin (II) perchlorate d) Cobalt (II) iodide e) Potassium nitrite f) Aluminum bromide g) Cobalt (III) carbonate h) Lead (IV) nitrate i) Ammonium oxalate

I need help with one of my pre-lab questions which I want to understand. Its question number 2, the one that highlighted. I don't want to make it over-complicated, I want something that I can understand.

The hydrated salt appears ___ the dehydrated salt.   Question 8 options:   the same as   darker than   lighter than

chemhelp5

SOLUBILITY TEST Based from the video link --- https://www.youtube.com/watch?v=OICRhukC9Ac The test samples are water, cyclohexane, cyclohexene and toluene. Drops of a dye was added to each test tube containing the test sample. Question: Based from your observation, write the results of the following samples: (a) Cyclohexane, (b) Cyclohexene, and (c) Toluene.  Thank you very much!

if a substance changes color at a higher ph but acids neutralize at a lower ph, would that affect the results of an experiment?

I need help calculating the initial concentrations please.

6 4 Brian accidentally spills 1 cup of strong bleach in the bathroom as he was helping his mother with cleaning. BLEACH i. Which household product below can he use to neutralize it? EXPLAIN why. ii. Which one of these will need to be used in least amount to neutralize the bleach? EXPLAIN why. a) Strong Vinegar b) Weak Lemonade c) Shampoo MEINZ

Please show solution and use laws for error calculation.

More than 1 can be selected

pls complete given the data

You have a solution of a standardized titrant of 0.01254 M and a sample that approximately has a molarity of 0.48 M. What dilution do you have to do to spend approximately 15 mL of titrant if you have 25 mL and 10 mL pipettes to take the diluted sample and value it ? Solution: With the 10 mL pipette, the sample should only be previously diluted 1:25, with the 25 mL one 1:64. Therefore, 10 mL of the sample can be taken and made up to 250 mL.

1. A solution contains a mixture of Na2CO3 and NaOH. Using phenolphthalein indicator 25 mL of mixture required 19.5 mL of 0.995 M HCl for the endpoint. With methyl orange, 25 mL of solution required 25 mL of the same HCl for the endpoint. Calculate grams per liter of Na2CO3 in the mixture. a.23b.36 c.78 d.112. A 1.2040 g sample containing sodium carbonate and inert material was dissolved in water and titrated to methyl orange end point, requiring 32.50 mL of 0.1020 M HCl. Calculate the %Na2CO4 in the sample. a. 93.36% b. 14.59% c. 12.75% d. 23.41%3. A 0.1510 g KHP (MW = 204.22 g/mol) sample required a volume of 57.04 mL of NaOH solution to reach a phenolphthalein end point. Calculate the molarity of NaOH titrant. a. 0.02593 M b. 0.006481 M c. 0.01296 M d. 0.01012 M

12.0 mL of a sodium hydroxide solution of unknown concentration was titrated with 16.1 mL of  0.209 M sulfuric acid solution. What is the concentration (M) of this unknown sodium hydroxide solution? a.0.140 b.80.8 c.3.21 d.0.561 e.0.280

Please help me and answer this.

What is Grease-Spot Test, Solubility Test, and Emulsification?

Help me fill in the blank boxes please

In titration, what solution is placed inside the Erlenmeyer flask? Group of answer choices diluted solution titrant analyte stock solution

given a diluted acid solution that was tested by another student. They were supposed to make a solution with a certain concentration. If your experimental data matched the test but not the target concentration, what does that tell you about the data? For example, the student was supposed to make a 0.87 M solution. When they tested it, they got 0.6113 M. When we tested it,we got 0.6144 M.

Name Chem Section Data Sheet determination 23°C 23°C 25°C temperature of filtered KHT solution, °C 0.04m concentration of NaOH solution, mol L- 0.04 m 0.04m KHT solution 14.9 49-5 final buret reading, mL initial buret reading, mL 49.9 volume of KHT used, mL NaOH solution 28 final buret reading, mL 10 49.8 १.१ 49.7 initial buret reading, mL 50 40mL volume of NaOH used, mL number of moles of NaOH used 0014 0014 number of moles of HT titrated .04 [HT] in KHT solution, mol L- 1.42 1.142 1.142 [K*] in KHT solution, mol L-1 solubility of KHT, mol L-1 average solubility of KHT, mol L- Ksp average Ksp

A student performed titration to find the concentration of acetic acid. Titrant was sodium hydroxide. He went beyond the indicator color change by adding too much titrant. How will his experimental error affect the calculated value for the concentration of unknown acetic acid? calculated value actual value. calculated value < actual value calculated value = actual value. more information is necessary this is not a source of error

In lab, a student combines two dye solutions into a single beaker. One of the solutions contains red dye and the other contains blue dye. What color(s) would you expect the combined solution to absorb?     Yellow     Purple     Green and orange     Red and blue     Green