What categories did Lavoisier use when he classified the elements

Which of the following is a result of sea floor spreading

What is 6421 in scientific notation

What is the moons role in causing tides?

How can a solute be separated from a solvent?

A reaction is second order respect to the reactant A. If the reaction is 85% complete in 12 minutes, how long would it take for the reaction to be 15% complete? a. 110s b. 27s c. 62s d. 130s e. 22s

Which of these do scientists use to study the world around them? 1. Hypothesis 2. Inductive reasoning 3. Scientific method 4. Deductive reasoning

The student is now told that the four solids, in no particular order, are barium chloride (BaCl2BaCl2), sugar (C6H12O6C6H12O6), benzoic acid (C6H5COOHC6H5COOH), and potassium bromide (KBrKBr).

Which of the molecules in the figure has the most carbon atoms? Which of the molecules in the figure has the most carbon atoms?

How many chomps can you do in one minute, one hour, or one day?

What are the first and second most abundant element in the universe?