An organism that is able to form nutritional organic substances from simple inorganic

substances such as carbon dioxide.

choses autotroph

or heterotroph

Phosphoric acid is a triprotic acid with the following pKa values: pKa1=2.148, pKa2=7.198, pKa3=12.375 You wish to prepare 1.000 L of a 0.0500 M phosphate buffer at pH 7.540.

Which phrase describes an abiotic factor? A. fish in a pond B. bacteria on the skin C. air temperature D. number of species on a seashore

Write the net ionic equation for the reaction between lithium chloride and mercury (II) nitrate

Heat is given off when hydrogen burns in air according to the equation 2H2 + O2->2H2O Which of the following is responsible for the heat?

Lemonade is a solution made from lemon juice, sugar and water. Identify the solute/s in the solution. (Can choose more than one) Lemon Juice Water Sugar Lemonade

Formule of the acido perbromico

What mass of protons would be required to just neutralize the charge of 2.5 g of electrons?

Whitch rock types tend to the weather in rounded shapes

A population of ground squirrels lives in underground burrows several miles from an ocean shore. If a hurricane strikes the shore, which effect of the hurricane would probably do the most damage to the squirrel population? A. thunder B. lightning C.

Discuss how forests act as carbon sinks.