Molecules that react with one another are called

The Tapeats Sandstone and Bright Angel Shale contain fossils of trilobites. Trilobites were marine organisms similar to modern-day horseshoe crabs. No other layers contain trilobite fossils. Which conclusion best explains these observations? A.

Quick question I have a question. If a question has the numbers 500kg and 3000N, how mant significant digits should the answer have?

What coefficient of O2 is needed to balance the equation C3H8 + O2 - > 3CO2 + 4H20? a. 2 b. 3 c. 5 d. 6

Which statements are part of the safety protocol for this lab experiment? Check all that apply. Wear a lab coat and safety goggles when performing an experiment. Always measure chemical quantities twice before adding to solution.

What does variable mean

Is filtration is an effective method to purify water for drinking?

Does oxygen release thermal energy

Is adding chocolate syrup to milk a chemical or physical change?

Describe what happens to a reaction that has stopped if more of the limiting reactant is added. What will happen if more of the excess reactant is added?

What is the mass of 5.40*1021 platinum atoms?