GC_4253_L14_Molar_Vapor_Density

10. Which is a way to induce crystal growth if no crystals are forming upon a. scratch air-liquid interface on flask with a glass rod or spatula b. add a seed crystal c. boil off excess solvent volume d. all options are possibilites

In a well plate dissolve benzophenone and benzioc acid in a small amount of ethyl acetate. Then use a capillary tube to spot sample onto pencil line. Add to developing  chamber 1.5 mL Hexens, 3.5 mL ethyl acetate. Use UV lamp and circle spot.

What specimens and procedures require a chain of custody form? Put in a table with explanation.

What are the conditions that hamper the performance of the fume hood? What do you think are the things to be done to ensure that the fume hood will be working efficiently? Are there things that are needed to be fixed or redesigned before the fume hood is commissioned for usage?

procedure on how the materials should be mixed to produce a lipstick.

The shorter distance that the solvent travels on the TLC plate results in a better separation of compounds. Group of answer choices True False

What specimens and procedures require a chain of custody form? Put in a table with corresponding explanation.

Provide full complete solution do not round off numbers and show proper labelling and cancellations

In a warm environment, which restorative wax is recommended for surface restoration? a. opaque b. wouund filler c. lip wax d. medium consistency

Which of the following are safe and effective techniques for drying organic solids recovered from a filtration?  (Choose all that apply).    a. Spreading the solid evenly on a watch glass or aluminum weigh boat and placing it in an oven set at a temperature 20 °C below the substance's expected melting point.   b. Placing it on top of a hotplate set on low.   c. Leaving the solid on the funnel with the vacuum on for several minutes.   d. Blowing on the solid.

How to get maximum % recovery from recrystallization and crude weight

Please solve in 10 minutes and get the thumbs up please show neat and clean work

Reposting please help me neat and clean correctly please

Provide a table with molecular weights, boiling points, and density values for the starting material and product. Please also list any hazards of these two compounds based on their SDS forms Material • Balances • Beaker- 50 mL • Boiling beads • Clamps • Filter paper- 11 cm • Funnel • Graduated cylinder- 10 mL and 25 mL • Round Bottom flask (50 mL) • Rubber stopper • Separatory funnel (125 mL) • Stir hot plate with aluminum heating bath and temperature controller • Test tube- 2 (12x75mm) • Thermometer (-10 ◦C -200◦C) Chemicals and Reagents • 2% Silver nitrate (AgNO3) in ethanol • Saturated NaHCO3 soln. • HCl [12M] • Saturated NaCl soln. • 2-methyl-2-propanol • Sodium sulfate, Na2SO4

Help me please neat and clean correctly please

Please ! Do both neat and clean correctly please...

State the different between a dehydrating agent and a drying agent

true or false A desirable solvent should be highly pure, commercially available, low viscosity and low reactivity.

Please help out with this lab safety question. Explain.

In any experiemnt what should be done to ensure safety? (Pick all that apply) a. Clamp all flasks utilized on the hot plate b. Use the same pair of gloves throughout the experiment c. Only remove your goggles at the front of the room d. Place boiling chips when refluxing e. Keep the hood sash below the required level at all times

Helping tags: Chemistry . . . WILL UPVOTE, just pls help me answer the questions and show complete solutions. Thank you!

Help me with all please neat and clean correctly!!!

Write the Quality Control For the Chemical (Exfoliant) ? Please answer at your own words.

Help please 9 Use sig figs if possible

PLEASE HURRY AND HELP. THIS IS A WARM UP.

How do you determine how much solvent to add during recrystallization? What happens if you add too much? Too little?

Is this correct for the diaper dissection lab