Fill in the following blanks that describe using sodium sulfate for a drying agent: Sodium sulfate dry's at a rate, requiring contact time but, it has capacity for adsorbing water. A slow, short, low B fast, long, low C slow, long, high D. fast, short, low
Q: When heating a test tube: It can sit directly on the countertop to cool Never look directly into…
A: When heating the test tube we should have to take certain care , so there should be no damage in lab…
Q: An important difference between Chemical Vapor Deposition (CVD) and Plasma Enhanced Chemical Vapor…
A: The CVD and PECVD are the techniques in which the gaseous species react on the solid surface to…
Q: cific method for t
A: The process of printing technique where mesh used to transfer dye into substrate called screen or…
Q: Write about the least to most important safety rules in a laboratory room. (Atleast 6 safety rules
A: 1. Dress for laboratory lab This is the safety rule because your clothing is the best form of…
Q: When using the centrifuge, what safety precautions should be followed?
A:
Q: Give another example of a drying agent like anhydrous magnesium sulfate.
A:
Q: Many reflux procedures involve a required length of time for the reflux to occur. When should you…
A: The time period should begin when the solution is not just boiling but actively refluxing in the…
Q: What is the best type of stirring device to use for stirring a reaction that takesplace in the…
A: Using basic concepts handling of instruments of laboratories.
Q: Determine the moisture content of the crystalline solid that weighs 4.8756g after staying in the…
A: In the given question we have to calculate the moisture content in the solid. given data: wet…
Q: Which solvent should be used to wash the solid material collected from a filtration? Select one: The…
A: The process which is used for the separation of solids from liquids or gases using a medium like…
Q: Why is paper used for weighing dry, non-hygroscopic chemicals only? Why is watch glass used…
A: When weighing chemicals, only dry, non-hygroscopic substances may be weighed on paper, otherwise,…
Q: Write the Quality Control For the Chemical (Exfoliant) ? Please answer at your own words.
A:
Q: Provide a table with molecular weights, boiling points, and density values for the starting material…
A:
Q: How can you separate a mixture of sawdust and powdered salt? mix properly with water, filter, and…
A: Salt mixes with water and forms a homogeneous mixture. Sawdust does not mix with water. It is…
Q: O Grinding would decrease the surface area and speed up dissolving O Grinding would increase the…
A: Grinding is the process of making bigger particles into smaller particles. That is, we will make…
Q: Q3. Give four factors that determine the suitability of drying agent in drying organic liquids
A: Organic solvents are usually immiscible with water. However, it is possible for some amounts of…
Q: Match the answers. Base oils Choose. Polyglycols Ideal hydraulic fluid Antifoam agents Solvent…
A:
Q: Hello good day, I am having a problem answering this question and I need your help on this. Hoping…
A:
Q: growth if no crystals are forming upon a. scratch air-liquid interface on flask with a glass rod or…
A: Interpretation : We have to tell the way by which crystals can grow.
Q: This lumber can be used as vertical studs, which are typically placed 16.0 in. apart. What is that…
A: Given : Distance in inches = 16.0 inches
Q: Do you use the bulb to help dispense the liquid from the pipette? Why or why not?
A: A pipette is used to accurately dispense the exact amount of a small amount of liquid like 10.00 mL,…
Q: Pipetting is much easier when the top of the pipette and the bulb are: Select one: a. Filled with…
A: Pipette is a laboratory tool commonly used in chemistry
Q: State the different between a dehydrating agent and a drying agent
A: Dehydration is a chemical process. It involves the erosion of water which is chemically associated…
Q: The purpose of fluting filter paper.
A: fluting filter paper when performing a gravity filtration it means folding a filter paper to give a…
Q: wet gum and dry gum method, what apparatus is use to triturate the emulsifier, oil and water? a…
A: An emulsion can be defined as a mixture of two or more than two liquids that are immiscible with…
Q: Identify the type of Non-Newtonian fluid for each household product: Tomato sauce A.…
A: Tomato sauce is a shear thinning fluid. Honey is a Thixotropic. Glue and flour is shear thickening.
Q: Sol Gel Aerosol Emulsion Foam Solid in Liquid Liquid in Gas Liquid in Solid
A: The mixtures given are,
Q: Write down the basic uses of chemical exfoliators? Please write at your own easy words.
A: Exfoliation is a process of removing the dead skin cells from the outer layer of the skin. There…
Q: Filter paper can be added to the developing chamber to help saturate the chamber with solvent vapor.…
A: Answer: True Thin-layer chromatography is a technique for separating a sample into its component…
Q: Determine the moisture content of the crystalline solid that weighs 4.8756g after staying in the…
A: The weight reduced on heating will give the amount of moisture content in the solid.
Q: Write the Quality Control Process For the Chemical (Exfoliant) ? Please answer at your own words.
A: Quality process for the exfoliant is given below.
Q: Draw a vacuum filtration setup and discuss possible advantages and disadvantages thereof
A: In vaccum filtration used apparatus Buchner funnel, Arm flask stand, filter paper. Vaccum source,…
Q: 1.To allow the separation of solids from liquids with heating , the best apparatus is: Select one…
A: There are several apparatus and storage materials are used in a chemistry laboratory to conduct…
Q: Water is a good solvent used for extraction process. What are the advantages of water as menstruum.…
A: A solution can be defined as the mixture that consists of two components; solute and solvent. Here…
Q: Determine whether each practice is recommended to keep a micropipette clean and functioning…
A: Solution micropipettes take issue in size and volume distributed, however looking on those specific…
Q: Use the dropdown menus to indicate the proper sequence of steps required in the use of a volumetric…
A: The proper sequence required in the use of a volumetric pipet is given by, Step-1: Rinse the pipet…
Q: What is the purpose of using cold solvent when washing your crystals after filtration
A: Interpretation- To explain the purpose of using cold solvent when washing your crystals after…
Q: HNO Select Draw Rings More Erase N H.
A:
Q: Watchglass Bent glass hook Arrangement for the drying of samples. It shows the recommended way to…
A: false, as the reagent is not covered the lid of the bottle as well as the beaker beak is open…
Q: Which one hardness type that remain .after boiling process Temporary hardness. Permanent hardness.
A: There are two types of water hardness; Temporary hardness Permanent hardness
Q: The most useful bonded-phase coatings in HPLC are . ...... a) glass b) alumina c) inert silica d)…
A: HPLC is High-Performance Liquid Chromatography. It is a technique that is used to separate and…
Q: The glass pycnometer is an instrument used for measuring weights and densities of liquids in the…
A: The solubility of a substance indicates that the quantity of the substance that passes into the…
Q: Table 12.1 cont. These photos are a collection of four photos showing the results of flame tests…
A: Different salts give different colored flames when they are put in a flame. As every salt has a…
Q: Procedure Dissolve 4.0 g of KOH pellets (cannot use NaOH) in 8 mL of water in a 250-mL round bottom…
A: A most common method for ether synthesis is Williamson Ether Synthesis . It is an example of…
Step by step
Solved in 2 steps
- In which option is the order showing whether the questions given below are true or false? ( ) Airborne humectants are generally called hygroscopic substances. ( ) Removing water from solids can be done by heating your sample in the oven just below its melting point. ( ) Drying capacity is a measure of the drying efficiency of the dryer. ( ) Drying intensity is the amount of water held by 100 grams of dryer. ( ) For the phenomenon called "blooming" to occur, the vapor pressure of the hydrate system must be higher than the partial pressure of water in the air. A. Right, Wrong, Right, Wrong, RightB.Right, Right, Wrong, Wrong, RightC.Right, Wrong, Wrong, Wrong, RightD. Right, Wrong, Wrong, Right, RightE.Right, Right, Wrong, Wrong, RightColor BEFORE adding Color AFTER adding Intensity of color AFTER adding FeCl3 Test Tube # FeCl3 FeCl3 #1 (salicylic acid) clear lilac 100% #2 (commercial aspirin A) clear slightly pink 50% #3 (commercial aspirin B) clear lilac 95% #4 (aspirin from your clear pink 20% synthesis above) #5 (control) clear clear 0% Based on this data and the melting point of Aspirin, how pure is the synthesized product?please solvit fast in short
- Spot plate color results using the solubility of iconic compounds table in expiermentBecause of the risk of lead poisoning, the exposure of children to lead-based paint is a significant public health concern. Thefirst step in the quantitative analysis of lead in dried paint chips is to dissolve the sample. Corl evaluated several dissolution techniques.24 In this study, samples of paint were collected and pulverized with a Pyrex mortar and pestle. Replicate portions of the powdered paint were then taken foranalysis. Results for an unknown paint sample and for a standard reference material, in which dissolution wasaccomplished by a 4–6-h digestion with HNO3 on a hot plate, are shown in the following table. (a) Determine the overall variance, the variance due to the method, and the variance due to sampling. (b) What percentage of the overall variance is due to sampling? (c) How might the variance due to sampling be decreased?What are two characteristics of good recrystallization solvent for given compound
- 20. How does the operator control digestion time in an aerobic digester? 1. By controlling degree of sludge thickening before digestionmoon als sis and 2. By measuring out the amount of polymer added how 3. By automatically controlling when the tank s and closes through valves and the SCADA system opens 4. By controlling sludge blanket depth and thicknessPART 3- LABORATORY EQUIPMENT EQUIPMENT NAME FUNCTION To hold test tubes. Attaches to a retort stand to support glassware being heated. To pour liquid from a large container into a small container. To provide a flame during an experiment. ones To light the Bunsen burner. To attach test tubes to a retort stand. To clean substances out of a test tube. To hold a hot crucible or flask. To hold a hot test tube. To place on the lab bench to prevent burning or to use with ring clamp. To transfer small amounts of liquid. To grow bacteria or contain small experiments. To hold liquids. To measure liquids. To contain experiments (a stopper can be used to close the flask). To hold a hot beaker. To perform an experiment with a different substance in each well. To hold chemicals and perform experiments in. To scoop and transfer small amounts of substances, To stir during experiments that involve mixing or dissolving.All changes save 7. When two solutions are mixed, a color change occurs. The data tables show the time between mixing and the color change for two sets of conditions. For Condition One, the solution concentrations were constant and temperature varied. For Condition Two, the temperature was constant and concentrations varied. Condition One: Concentration Time for Temperature (°C) Sample Color to Change 1 10° 36 sec 22° 14 sec Condition Two: Temperature Time for Concentration Sample Color to % Change 1. 100% 15 sec 2. 50% 24 sec Which of these statements is true according to the data? O The reaction rate is greater at 22°C than at 10°C. O Reducing the temperature increases the rate of the reaction. The reaction is affected by changes in temperature not by changes in concentration. O Decreasing the concentration increases the reaction rate. PREVIOUS 17 of 25 NEXT SAVE & EXIT
- The purpose of fluting filter paper. ( not more than 5 sentences)If you have an empty burette in a burette clamp, in what order do you do these steps to fill the burette with liquid (either water for washing, or the titrant)? Drag the steps below into the correct brder. Step 1: Step 2: Step 3: Step 4: Step 5: Step 6: Step 7: Close the tap. Remove burette from clamp. Hold burette with top below eye level. Put plastic funnel into top of burette. Fill burette with liquid. Remove plastic funnel. Return burette to burette clamp.Please give a clear and detailed image