In your own words, define the "law of conservation of mass"

What type of organic molecule is produced when a carboxylic acid reacts with an alcohol using an acid catalyst?

Which of the following Group 1A elements is the least reactive? A. Cs (cesium) B. Li (lithium) C. K (potassium) D. Na (sodium)

Which molecule has polar bonding and is nonpolar? HCl, OF2, SF6, HCN, CHF3

Which characteristics determines the chemical properties of matter?

What are the causes of the Earth's climate changes and people's management of these effect changes? (Compile a list of smaller questions that you must answer in order to get to that unit challenge)

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons

What amount (moles) is represented by each of these samples? a. 20.0 mg caffeine, c8h10n4o2 b. 2.72 1021 mo?

A sample of gas occupies 40.0 mL at - 123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 = V2T1 Don't forget to convert temperature to kelvin! Group of answer choices 8.80 mL 20.0 mL 80. ML 182 mL