How many moles is 145 liters of hydrogen gas at STP?

Rutherford bombarded gold foil with alpha (a) particles and found that a small percentage of the particles were deflected. Which of the following was not accounted for by the model he proposed for the structure of atoms? A.

What volume of a 1.0 M HCl is required to completely neutralize 25.0 ml of a 1.0 M KOH?

An element the has a low first ionization energy and good conductivity of heat and electricity can be classified as A) metal B) metalloid C) nonmetal D) noble gas

Why is the current model of the atom considered to be most accurate

What is the hydroxide concentration of a solution with a pH of 12.80?

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.

How does hess's law use intermediate reactions to calculate the enthalpy of a desired reaction?

Which atomic particle dtermines the chemical behaviour of an atom?

If you could travel to the Sun and back, about how far would you travel? A. 1 AU B. 2 AU C. 5 AU D. 10 AU

A scientist is conducting a descriptive experiment where she is monitoring sea level along coastal towns in California. What is a major benefit of this experiment? The relationship shows cause and effect. It is repeatable.