How many protons and neutrons are in the nucleus of isotope with mass of 68.926 amu?

A mixture of aluminum and iron weighing 9.62 g reacts with hydrogen chloride in aqueous solution according to the parallel reactions 2 Al + 6 HCl - > 2 AlCl3 + 3 H2 Fe + 2 HCl - > FeCl2 + H2 A 0.

How many neutrons are in a typical silicon atom? A. 15 B. 14 C. 28 D. 42

List the advantages and disadvantages of restricting antibioticuse

Which of the following correctly describes a compound? The atoms are bonded together, and the compound has different physical and chemical properties than the individual elements.

What is the wavelength of a 2500 kg truck traveling at a rate of 75km/h?

What is the PH of a 0.05M solution of the strong base Ca (OH) 2 at 25C

After a rock breaks down, materials that are left combine with organic materials to form

How many additional electrons can fit into the n = 3 shell of sulfur?

In a titration, what is the name of the substance that is being determined?

What is conditioned stimulus?