2. A chemist performed an experiment to determine the melting point of sodium chloride with the following results: Melting Point (C) 702 Trial Number 1 2 701 3 703 4 702 5 704 (a) Determine the mean and average deviation of these determinations. Are these determinations precise?

Q: order these with rising density glass liquid  gas crystal plasma

A: Density order is Solid >crystal > liquid >gases >plasma .

Q: cific method for t

A: The process of printing technique where mesh used to transfer dye into substrate called screen or…

Q: Briefly explain what you should do before you dispose of waste or excess materials.

A:

Q: To determine the Roman Numeral, you need to know the ____?______ on the ___?_____ in the compound."

A: The periodic table have numbers 1, 2, 13, 14, 15, 16, 17, 18. The corresponding roman numerals used…

Q: Why do you think polymers have no definite melting point?

A: Here we have to predict why ploymer have no definite melting point.

Q: Fill in the blanks: Silica ____ has a larger surface area than particle type ___

A:

Q: If a transparent substance (light goes through it) appears red, the substance is _______ res light.…

A: When we see a specific color of an object, it appears to be of that color if it reflects and allows…

Q: The paper used in chromatography is made of molecules with___parts A polar  B nonpolar

A: The  paper used in chromatography is made of cellulose fibre molecules.

Q: if a copper pipe truns blue green this means? Be sure to identify the recation step?

A: Answer:When a pure metal comes in direct contact of environmental factors and turn into a new…

Q: 12. A solid compound has a mass of 43.25 g. You scrape 2.5 g of the material off of the solid for…

A:

Q: When isolating a solid compound after recrystallization, which is the appropriate technique to use,…

A: Recrystallization is an experimental technique of separating pure compound from the solution…

Q: help please answer in text form with proper workings and explanation for each and every part and…

A: A retaining wall is primarily designed to prevent soil erosion and manage soil pressure in areas…

Q: Label the parts of this chromatography column. "A" "B" "C" "D" "E" "F"

A: Chromatography -  It is a laboratory technique used for the seperation of a mixture. The mixture is…

Q: Defined the proper use of the following laboratory glassware: 1. Pipette 2. Volumetric flask 3.…

A: 1. Pipette: A pipette, also known as a chemical dropper. It is a glass or plastic tube used to…

Q: 5.Where should the thermometer bulb be located in the following setups? a. a microscale distillation…

A: a) Answer -

Q: 3. A fireproof safe is made of two thin metal boxes, one inside the other, with equal spacing…

A: When smaller box is placed in larger box , some of the volume will remain empty between the boxes.…

Q: What is Flame Test? What is your observations about this flame test experiment? What is your own…

A: The purpose of the flame test experiment is to identify the presence of certain metal ions in a…

Q: The process of separating the solid from the liquid can also be accomplished by gravity filtration.…

A: it is quicker ( vaccum filteration is faster than gravity filteration)

Q: After you collect a fraction from the column, how do you remove the solvent to get the pure…

A: Solid crude compound purify by column chromatography. Crude contains two or more compound. Column…

Q: a) Why should a fixed-volume pipette be more accurate than a graduated pipette? b) Why would…

A: a) A pipette is a common laboratory tool used to transfer and dispense fixed amounts of liquids.…

Q: 1.  All chromatography involves a solid phase, and mobile phase.  In thin layer chromatography the…

A: