What are the origins of the word fossil

How many moles of water are produced when 3.45 moles of KMnO4 react? Give your answer to the nearest 0.1 moles. moles H2O

What is electropositivity and electronegativity? Between group 1 and group 17, which is electropositive and electronegative?

True or False: The identity of a pure substance will change when it is melted or frozen.

The reactant that controls the amount of product formed in a chemical reaction is called the?

Why was it important to have endothermic and exothermic processes in the building materials of your train? a. Which engines released thermal energy in an exothermic reaction? b. Which engines absorbed thermal energy in an endothermic reaction?

What does it mean for data to be continuous?

When an acid reacts with a base what compounds are formed? a. a salt only. b. water only. c. a salt and water. d. metal oxides only.?

What is the differences between River system, Tributary?

having that coloration is selected for since many predators will recognize it and stay away. Therefore the common coloration is beneficial to the butterflies and becomes more common. What type of selection is involved?

What organisms appeared on Earth First? a). gastropods b). horn corals c). brachiopods d). crinoids