I need a chemistry expert if your not a chemistry please dont message me

E curriculum, and chapters such as metals and alloys, metal extraction and chemical tests. the homework is in the attachment below

these kinds of problems

2O was heated thoroughly in a porcelain crucible, until its weight remained constant. After heating, how many grams of the anhydrous compound remained?

cylinder has a mass of 42.434 g. When it is filled with water, it weighs 56.878g. What is the mass of the water.

final project. I honestly do not understand a lot of the material that has been gone over in class and need help finding the answers and understanding the answers to the final project. The project has to do with explaining the molecule Retinol (vitamin A) in a lab write-up format. I will attach the rubric for more information on what is required. For my project I mainly need help in the section asking to describe the structure of the molecule. I believe i was able to identify the functional groups, the IUPAC name, and hybridization of the carbons. I need help identifying dipoles, intermolecular forces, stereochemistry, and acidity of the molecule. All of this is for the molecule Retinol

Angeles, CA, USA) time zone

ely 1 hour of tutoring or 1.5. On a Wednesday, at 11 am. Would you be available? Thank you.

entahydrate. My students are varying either the mass of the copper oxide or the concentration of the sulfuric acid. They do not have an understanding of any chemistry calculations and only basic knowledge about chemical equations. They should have some knowledge of ionic equations and neutralistions reactions but I need to explain it to them in very basic terms. Without doing any calculations myself I can't explain it to them.

bmit it on Monday morning please.