Write the predicted electron configuration (short version using the noblegas core) for the following atoms  Pt Leave 1 space between each term. For example Nitrogen would be entered: 2s2 2p3

Calculate the de Broglie wavelength of an electron with a velocity of 5.0 x 10 -3 times the speed of light (3.0 x 10 8 ms).

A sodium vapor lamp emits light with an average wavelength of 589.3 nm. Calculate the energy of a mole of photon of the light in j/mol

Write the expected short electron configuration for Hg. Leave 1 space in between each term. For example: nitrogen would be 2s2 2p3

The last valence electron in Br is 4p5. What are the quantum numbers for this electron. n is _______ l is  _______ ml is _______ and ms is _______

A 35.0 g sample of nickel metal is heated to 100.°C and dropped into 100.0 g of water, initially at 22.0°C. Assuming that all of the heat lost by the nickel is absorbed by the water, calculate the final temperature of the nickel and the water. The specific heat of nickel is 0.444J/g°C)

Calculate the energy of light emitted when the following transition occurs in a hydrogen atom: n=6 to n=3 Enter your value as a positive.

Given the following data: 2C2H2(g) + 5 O2(g) –> 4CO2(g) + 2H2O(l)      ΔH= -2600.kJ CO2(g) –> C(s) + O2(g)                                  ΔH= 394kJ 2H2(g) + O2(g) –> 2H2O(l)                                 ΔH= -572kJ Use Hess’s Law to calculate ΔH for the reaction 2C(s) + H2(g) –> C2H2(g)

In a well insulated container, 50.0 g of water at 5.0 degrees celsius is added to 350 g of water at 32.0 degrees celsius. What is the final temperature when the ice mixture reaches equilibrium?

The specific heat capacities of three metals are given below. Metal Fe Pb Zn Specific Heat, j/g°C 0.470 0.130 0.388 If 1.00 gram of each metal is heated to 100 degrees celsius and added to 10 grams of water at 25 degrees celsius, what is the order of the temperatures of the final mixtures from the lowest to the highest?