Propane gas (C3H8) is used in most gas grills. What is the amount (in grams) required to generate 275.0 kJ of heat? Must show your work (scratch paper) to receive credit. C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)       ΔH°rxn = -2219.9  kJ 

Place the following types of electromagnetic radiation in order of increasingfrequency.             x-rays              radio waves              gamma rays

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

Propane gas (C3H8) is used in most gas grills. What is the amount (in grams) required to generate 275.0 kJ of heat? Must show your work (scratch paper) to receive credit. C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)       ΔH°rxn = -2219.9  kJ 

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)