Most organisms breathe using oxygen or carbon dioxide. Where do these gases come from on land?

air

offspring

homeostasis

shelter

A plant fertilizer contains 15% by mass nitrogen (N). In a container of soluble plant food, there are 14.1 oz of fertilizer. How many grams of nitrogen are in the container?

Which of the following statements is false? A) Entropy increases with the number of microstates of the system. B) The total entropy of the universe increases in any spontaneous process.

Determine the mass of NaOH needed to make 750.0mL of a 6.00 M solution of NaOH

What is the expensive property of a substance

Which of the following elements is present in all living things? a. aluminum c. carbon b. lead d. helium

What are elements in the same row or period called

1. Physical geography examines the culture, political systems, social systems, economic systems, and characteristics of various peoples-why they eat certain foods, practice a chosen religion, or why they select a particular mode of transportation. A.

A gas has a pressure of 2.0 atm. If the temperature decreases from 250K to 125K and the volume remains constant, what will be the resulting pressure?

Calculate the number of moles of Barium hydroxide, Ba (OH) 2, present in a 100.0 g sample.

Which type of reaction occurs in the following? 2HgO (s) - - 2Hg (l) + O2 (g) 1. a decomposition reaction in which a metal is reduced 2. an acid-base neutralization reaction to produce oxygen gas a displacement 3.