What is the mass number of an atom that has 12 neutrons and 11 protons?

12 Which element has atoms with the strongest attraction for electrons in a chemical bond? (1) chlorine (3) fluorine (2) nitrogen (4) oxygen

Which contribution added to Rutherford's discovery of a positive nucleus? Atoms are indivisible. Electrons are scattered in an atom. Neutrons are inside the nucleus of an atom. Atoms of the same element have the same properties.

How many liters of H2 at STP are required to react with 2.3 g of Fe3O4 to give FeO and H2O?

A piece of iron is heated with a torch to a temperature of 603 k.

When a solution produces equal numbers of hydrogen and hydroxyl ions, it is said to be neutral. Select one: True False

The big bang is through to have started by an?

What is the word equation for KNO3 = KNO2 + O2

Which of the following is true of mixtures? A) a mixture is a combination of two or more substances in which each substance retains its own properties B) A mixture is composed of a single pure substance C) A mixture must contain multiple compounds

Identify the main source of energy used by most organisms

Write a net ionic equation to show that codeine, c18h21o3n, behaves as a bronsted-lowry base in water.