A sample of hydrated calcium sulfate has a mass of 2.643 g. After dehydration, the sample has a mass of 2.090 g. What is the percent by mass of water in the hydrate?

What happens when a penny is dropped from a height of 20 meters

An example of why people may choose not to drink is: Family history Supporting the legal drinking age Don't need alcohol to have fun All of the above

Gold and helium are examples of a (n)

What type of reaction takes two elements or molecules and combines them together to produce a single molecule? A. a synthesis reaction B. a hydrolysis reaction C. an electrolytic reaction D. a decomposition reaction

Which of the following is the correct name for the compound mgbr2? magnesium bromate magnesium bromide magnesium dibromide magnesium (1) bromide

How can there be snow near a giraffe's home This is actually science so yeah

If a sealed syringe that contains some gas in heated in which direction will the syringe plunger move

Use the drop‑down menus to label the statements as either true of false. Dichloromethane is flammable. true false Methanol is flammable. Concentrated sulfuric acid is corrosive. 10% sodium carbonate solution must be used in the fume hood.

What is the process all rocks are continuously in during which that can change into other types of rocks

Collagen is made of fibers and is found in tendons and cartilage. Collagen contributes to meat toughness and is, therefore, an example of which type of protein?