In a soil profile, which is the second layer?

solid rock

subsoil

parent rock

topsoil

Consider the following reaction: CaCO3 (s) →CaO (s) + CO2 (g). Estimate ΔG∘ for this reaction at each of the following temperatures. (Assume that ΔH∘ and ΔS∘ do not change too much within the given temperature range.) 300K 1000K 1440K

According to the big bang theory, approximately when did the universe begin? 4 billion years ago 7 billion years ago 11 billion years ago 13 billion years ago

List 4 physical properties

The symbol for xenon (xe) would be a part of the noble gas notation for the element a. antimony. b. cesium. c. radium. d. uranium.

The specific heat of a certain type of metal is 0.128J / (g.°C). What is the final temperature if 305 J of hear is added to 28.8 g of this metal, initially at 20.0°C?

What changes do you shown in the model

Select all the correct answers. What are the products of the acid-base reaction between HClO3 and LiOH? LiClO4 H2O LiH LiClO3 HClO4

Under what conditions will light bend? a) Never b) When it slows down while going through space c) When it speeds up while going through space d) When it passes from one medium to another

Cells can manipulate the free energy of reactions by: (Select all that apply) Changing the concentrations of products and reactants Changing the concentration of the enzyme involved in the reaction Using enzymes A.

NH3 is an example of A. an element. B. an atom. C. a mixture. D. a compound.