Quantum Leap
Light is one form of this.
electromagnetic radiation
What are the four gas variables?
volume, temperature, pressure, number of moles
Is high electronegativity a property of metals or nonmetals?
nonmetals
N2 + 3H2 --> 2NH3
If 2 mol of nitrogen reacts with an excess of hydrogen, how many moles of ammonia will be produced?
How many grams of ammonia will be produced?
4 mol & 68 g
Do strong acids ionize partially or completely?
completely
If one wants to increase the kinetic energy of phtoelectrons, should one increase the intensity or the frequency of the incident light?
frequency
What is the standard molar volume for all gases at STP?
22.4 L/mol
Do the lattice energys of salts of alkali metals with chloride increase or decrease as the alkali metals increase in atomic number (LiCl, NaCl, KCl, etc.)?
decrease
N2 + 3H2 --> 2NH3
If 6 mol of both nitrogen and hydrogen are placed in a container, and the reaction goes to completion, which reactant is in excess and by how many moles?
Nitrogen is in excess by 4 moles.
What is the Kw of water?
1x10-14
When light is sent through a double slit, the detection screen shows that light exists as what?
waves
What is the volume of 4.0 g of Helium at STP?
1.0 mol of any gas occupies 22.4 L at STP.
Is the first ionization energy for sodium, Na, greater or less than the IE1 for potassium, K?
greater
Zn + 2HCl --> ZnCl2 + H2
What volume of hydrogen gas is produced at STP from the reaction of 131 g of Zn.
~ 44.8 L
What is the pOH of pure water at 25oC?
7
When electrons are sent through a double slit one at a time, the detection screen shows that the electrons behave as what?
waves
5 L of hydrogen is in a cylinder with a movable piston. if the temperature increases from 0oC to 273oC, and the pressure goes from 1 atm to 2 atm, what is the new volume of the gas
5 L
How many shielding electrons shield the 3p bonding electron in chlorine?
16
Zn + 2HCl --> ZnCl2 + H2
What mass of zinc is needed to produce 136.4 g of zinc chloride and 2.0 g of hydrogen gas?
65.4 g
What is the pH 0f a 0.0001 M HCl solution?
4
To what energy level must excited hydrogen electrons fall to in order to give off visible light
n=2
1 mol of hydrogen and 1 mol of methane are in a container with a movable piston at STP. What is the volume of the gases in the container.
44.8 L
Calculate the Zeff for the sodium's 3s1 electron.
2.2
Zn + 2HCl --> ZnCl2 + H2
2.0 L of an HCl solution with a PH of 0 reacts with an excess of zinc. What volume of hydrogen is produced at STP?
22.4 L
What is the pH of a 0.0001 M NaOH solution?
10