19- by heating 2.86 g of hydrated sample of washing soda Na,CO3.XH20, till Complete drying the remaining mass was found to be 1.06 g. 1- Calculate the mass percentage of water in the sample? give your answer one decimal place. % ? 2- Calculate X ?

Q: Draw Lewis structures, 3-D structures, and the name of the electron group geometry and molecular…

A: The molecules given are Carbon dioxide CCl4

Q: cific method for t

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

Q: When using the centrifuge, what safety precautions should be followed?

A:

Q: what glassware and quipment is being used in this photo of lab equipment?

A: In the picture given in the question, the process of distillation is being carried out. If we have a…

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

A:

Q: ase

A: Dear student I have given answer to your question in the image format.

Q: The process of applying a mixture of compounds to the top of a column of a stationary phase O…

A: column chromatography is used to separate the chemical compounds based on their polarity.

Q: xtracting natural from plants flowchart

A:

Q: What is the property of a material that makes it transparent? Why does mineral such as emerald…

A:

Q: What protections does fire resistance not provide?

A: Fire resistance is defined as a type of chemical/coating which is applied while making houses and…

Q: Differentiate between Polymers and Plastics? Give some examples?

A: The word polymer is the combination of two units : 'poly' and 'mers' where 'poly' means many and…

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: Name the result of applying a coating over items that have not been properly dried of surface…

A: We are to discuss what happens when coating is applied on wet surfaces.

Q: How does PEG / PPG Dimethicone (below) differ from a regular linear Dimethicone. What…

A: PEG/PPG dimethicone differ from a regular linear Dimethicone in the sense that these polymers have a…

Q: Which glass can cut off ultraviolet rays?

A: Glass is an amorphous solid. It is transparent in nature. There are many types of glasses and have…

Q: What are the types of orientation that shrink films go through?

A: A shrink can go through one direction (unidirectional or mono-directional) or in both directions…