_Chemistry Lab Safety Data Sheets and Post-Lab Complete

After collecting all of the class data in Part IV Table E, graph mass in grams of regular cola on the y axis in and the volume of regular cola on the x axis in mL. On a separate piece of graph paper, prepare another graph using of the same type using diet cola. What is the slope of the best fit line on each graph? What does the slope represent?

Answer number 1-8. Number 4-8 is connected to each other.

STANDARD SAMPLE PREPARATIONS FOR ABSORBANCE & CONCENTRATION DATA Concentration of stock nickel sulfate hexahydrate solution = .400 Molarity Sample Volume Absorbance Concentration (In Molarity) a 5 mL .179 10 mL .329 15 mL .588 20 mL .760 25 mL .939 Reference Blank = 0 Please show how to find Molarity, please show steps. Thank you and stay safe.

How does the fractionating column make distillation more precise? A. The added distance gives more leeway for expanding gases so as not to explode. B. The added distance increases temperature of all vapors involved C. The added distance from the condenser forces heavier vapors to condense off early D. The added distance lets the thermometer get a more stable temperature

Subparts 1-3

Discuss the language demands included in the lesson on mixing substances in a 5th-grade classroom by Identifying key vocabulary terms students must know in order to master the learning objectives for the lesson based on the below standard and learning objective. Standard Conduct an investigation to determine whether the mixing of two or more substances results in new substances. Learning Objective Given a variety of substances and safety equipment in a classroom setting, students will be able to conduct an experiment to mix two or more substances and observe the results. They will be able to correctly identify whether a new substance has been formed as a result of the mixing, based on observable changes such as color change, formation of a precipitate, or change in temperature, with at least 80% accuracy.

What is the scientific method answers to the freezing point of water

5

To make a 1000mL of 1% NaCl, weigh _____ grams of NaCl, place in a graduated cylinder, and add water to make the total volume _____ mL.

Filtration can be tedious especially if it takes a while for the filtrate to flow. As a laboratory analyst how can you reduce your waiting time during filtration? How will you achieve it?

Please provide only typed answer solution no handwritten solution needed allowed...

B. Density of Liquid 1. Obtain a sample of distilled water (any quantity of your choice) anddetermine its mass and volume. Record your data on table 3 in theexperimental report 2. Calculate the density of the water sample using equation 1 Substance     Density (g/mL)    Substance     Density (g/mL)Aluminum       2.7                     Lead                         11.3Brass                8.4                      Zinc                     7.1 Copper           8.9                           Cork                        0.26Tin                  7.3                   Silver                                           10.5Bone             1.80                  Rhodium                              12.4Iron             7.9                         Platinum                                     21.45   Density of Liquid Density can be determined in the laboratory by measuring the mass and volume ofa substance. To measure the density of a liquid, first measure the mass of a clean,dry beaker. Then add…

1. Consider the following data set. Concentration, mg/L 0.100 0.200 0.300 0.400 0.500 Write capital letters only on the space provided. 1. What is the slope? A. -0.064 B. 0.697 C. 1.429 D. -13.135 2. What is the y-intercept? A. -0.004 B. 0.004 C. 0.717 D. 10.141 3. What is the concentration of an unknown sample with an absorbance reading of 0.218? A. 0.156 B. 0.194 C. 0.242 D. 0.267 Absorbance 0.125 0.304 0.422 0.559 0.712

Laboratory 2 Report Sheet-Lab 2 A.2 Area Your measurements Length = Width = Area = (Show calculations.) Why could two students obtain different values for the calculated areas of the same rectangle? A.3 Volume of a solid by direct measurement Shape of solid Formula for volume of solid 18 Height Width Another student's measurements Volume of the solid (Show calculations of volume including the units.) Length Diameter (if cylinder) Page 3 of 3 482 words 区

Multiple choice. Please check my asnwers from numbers 5-9 if they are correct. Thank you!

Given Benzene - https://fscimage.fishersci.com/msds/02610.htm   What is its boiling point (____grams per 100 mL)? Final answer must be rounded off to 2 decimal places and shall NOT have any unit.

(number 15, for the second picture)

2. What’s the main purpose of the glass shields on an analytical balance? A. To calibrate the balance B. To stop the current C. To keep out pests D. To prevent finger prints from getting on the weigh pan

Please help with question 6

1. a. What are the three classifications of chemicals used in analytical chemistry? (one is Primary Standard Grade) b. What are the three common sources of error encountered in weighing (one is buoyancy) c. To what precision can analytical balances (in mg) and pan balances (in g) be read

Solid particles in water may exist in 3 ways - dissolved, dispersed, or suspended. (True/False) When a previously dissolved solid separates from water either via chemical reaction or a change in certain condition like pH or temperature, it forms a______.

Pls help me I'm just grade 6 please answer the questions shortly and concise thank u experts love ❤️

Which of the following pairs is correctly matched? A. beaker: measures volume of liquids B. spatula: scoops out solids C. hotplate: supplies flame D. crucible tongs: holds test tube