How many protons, neutrons, electrons, does isotope number 19 and mass of 39?

Consider the Zn (s) + Cu+2 (aq) Zn+2 (aq) + Cu (s) system. Which element was the electron acceptor? A) zinc B) copper

A reaction has a standard free-energy change of - 10.70 kj mol-1 (-2.557 kcal mol-1). calculate the equilibrium constant for the reaction at 25 °c.

What is the half-life of an isotope if 125 g of a 500 g sample of the isotope remains after 3.0 years? a.) 3.5 years b.) 4.5 years c.) 1.5 years d.) 2.5 years

Explain sp hybridization in acetylene molecule? Dr aw the structure of acetylene molecule to show the bond angle and bonding molecul ar orbitals.

To convert from moles to mass for any molecule or compound you multiply the number of moles by the molar mass. A. True B. False

Complete each of the definitions with the appropriate phrase. Precision means that measurements are close to Accuracy means that measurements are close to Anawer Bank each other an accepted value |individual several

Acetylene is hydrogenated to form ethane. the feed to the reactor contains 1.4 mol h2/mol c2h2. (find properties of the reactants/products in appendix of book) a.

Several properties of the element magnesium are shown. Which one is a chemical property?

How does the quantity of atp produced as a result of activity by the electron transport chain compare to the quantity produced as a result of glycolysis?

Molybdenum has a molar mass of 95.94g/mol. How many molecules of molybdenum are in 150.0 g of molybdenum