When you look out the window at the blue sky you see light of a wavelenth of  473 nm. A photon of that light has a frequency of Hz and an energy of J. Must show your work (scratch paper) to receive credit.  

Write the full electron configuration for S: (Do not consider exceptions. Make sure to follow the order following the Aufbau principle, use the following format without superscripts: 1s2 2s2 2p6…)

A 91.9 MHz radio transmitter has a wavelength of m and an energy of J. Must show your work (scratch paper) to receive credit.  

A coffee-cup calorimeter contains 100.0 mL of 1.000 M HCl (excess) at 20.3 °C. When 1.82 g Zn(s) is added, the temperature rises to 30.5 °C. What is the heat of reaction per mol Zn? Assume that the heat of solution is that of water, and the density of the HCl is 1.000 g/mL.   Zn(s)  + 2 HCl(aq)  → ZnCl2(aq)  + H2(g)   

Which of the following substances (with specific heat capacity provided) would show the greatest temperature change upon absorbing 100.0 J of heat?

A coffee-cup calorimeter contains 100.0 mL of 1.000 M HCl (excess) at 20.3 °C. When 1.82 g Zn(s) is added, the temperature rises to 30.5 °C. What is the heat of reaction per mol Zn? Assume that the heat of solution is that of water, and the density of the HCl is 1.000 g/mL.   Zn(s)  + 2 HCl(aq)  → ZnCl2(aq)  + H2(g)   

Use Hess’s Law and the following data   CH4(g) + 2 O2(g) → CO2(g)   +  2 H2O(g) ΔH = −802 kJ CH4(g) + CO2(g) → 2 CO(g)   +  2 H2(g) ΔH = + 247 kJ CH4(g) + H2O(g) → CO(g)   +  3 H2(g) ΔH = + 206 kJ   to determine the ∆H°rxn for the following reaction, an important source of hydrogen gas:   2 CH4(g) + O2(g) →  2 CO(g)   +  4 H2(g)   Must show your work (scratch paper) to receive credit.

Given the data:  N2H4(l) + O2 (g) → N2(g) + 2 H2O (l) ΔH° = – 622.2 kJ 2 H2(g) + O2 (g) → 2H2O (l) ΔH° = -571.6 kJ H2(g) + O2 (g) → H2O2(l) ΔH° = – 187.8 kJ   using Hess’s Law the ∆H for the reaction below is kJ:N2H4 (l) + 2 H2O2 (l) → N2(g) + 4 H2O (l)Must show your work (scratch paper) to receive credit.

When a 2.150-g sample of glucose, C6H12O6, is burned in a bomb calorimeter with a heat capacity of 6.317 kJ/°C, the temperature of the calorimeter increases from 23.446°C to 28.745°C. Calculate ∆E for the combustion of glucose in kJ/mol.

Place the following types of electromagnetic radiation in order of increasingwavelength.             visible light           x-rays              microwaves