What is calculated by dividing mass volume

Given that Delta. G for the reaction below is - 957.9 kJ, what is Delta. Gf of H2O? 4NH3 (g) + 5O2 (g) Right arrow. 4NO (g) + 6H2O (g) Delta. Gf, NH3 = - 16.66 kJ/mol Delta. Gf, NO = 86.71 kJ/mol

If the concentration of brown sand is 2.0 ppm, how many grains of brown sand are in the bucket?

Color tests are more specific that microcrystalline tests in identifying a particular drug. A. True B. False

If a catalyst is used in a reaction: a. the energy of activation increases. b. the reaction rate does not change. c. the reaction rate increases. d. the equilibrium shifts.

Which scientist proposed the model of an atom as a nucleus surrounded by electrons? James Chadwick John Dalton J. J. Thompson Ernest Rutherford

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru

Foods labeled "fat free" can actually contain less than 0.5 grams of fat.

Plants make their own food. The chemical reaction for this process is shown in the equation below. CO2 + H2O + energy → C6H1206 + O2 What are the products in this chemical reaction? O A. C6H1206 + energy O B. H20 + energy O C. CoH1206+02 O D.