What is the differnce between the atomic number and the mass number of an element?

AB Reacts with C2 to yield AC and B. 2AB+C2-->2AC+2B The molar mass of AB is 75.0 g/mol, the molar mass of AC is 60.0 g/mol, and the molar mass of B is 50.0 g/mol. a) What is the theoretical yield (in grams) of AC from the reaction of 41.

The pH of a solution measures the [H3O+] in the solution. If one solution has a pH of 4 and another solution has a pH of 3, how does the [H3O+] in the two solutions compare? They are in a 1:1 ratio. They are in a 1:10 ratio.

What is the normal ph of rain?

What was significant about the rocks Darwin found in the mountains

An unknown gas has a pressure of 699.0 mm Hg at 40.0 C. What is the temperature at standard pressure?

What is the molar mass of Al2 (SO4) 3?150.03 g/mol 278.03 g/mol 342.17 g/mol 450.09 g/mol

1. Which of the following species determines the chemical properties of an atom? A. Electron B. Neutron C. Nucleus D. Proton 2. The following glasswares are used to measure the volume of liquids except A. graduated beaker B. pipette C. test tube D.

A sample of a certain material has a mass of 2.03 x 10-3 g. calculate the volume of the sample, given the density is 9.133 x 10-1 g/cm3.

What happens to a reactant molecules when forming product molecules

Which is the atomic number of an atom with six valence electrons