The atomic number of sodium (Na) is 11. This is also the number of which of the following?

atomic mass

ionic charge

neutrons

protons

Write a net ionic equation for the overall reaction that occurs when aqueous solutions of sodium hydroxide and hydrosulfuric acid are combined. Assume excess base.

The molecular mass of glucose is 180g/mole. how will you make0.25mglucosesolution

How is it that an electron can cause your brain to "see" color without ever leaving its atom?

Ben and Jerry added small pieces of magnesium to hydrochloride acid. They noticed that bubbles formed, the test tube got hot, and the the magnesium disappeared. What is a sign that a chemical reaction has taken place in this experiment

How do you convert moles of a compound to mass?

Describe the composition of a lead storage battery

A 5.0g sample of aluminum with a specific heat of 0.90 j/g was heated from 22.1^c to 32.1^c. How much heat to the nearest joule did the aluminum gain?

How many moles of HI are present at equilibrium when 2.0 moles of H2 is mixed with 1.0 moles of I2 in a 0.50 L container and allowed to react at 448oC. At this temperature K = 50.

A laboratory manual gave precise instructions for carrying out the reaction described by the chemical equation, C2H6O + O2 C2H4O2 + H2O.

2Al (s) + 3Pb (N03) 2 (aq) 2Al (N03) 3 (aq) + 3Pb (s) How many molecules of Pb (N03) 2 are used in the reaction? How many oxygen atoms are used in the reaction? How many moles of Al (N03) 3 are formed?