Which of the following (with specific heat capacity provided) would show the largesttemperature change upon gaining 200.0 J of heat?

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 

Use the standard enthalpies of formation provided to calculate the change in enthalpy for the reaction below: 2 Cl2(g)  +  2 H2O(l) → 4 HCl(g) + O2(g)            ΔH°f (kJ/mol) H2O(l)  -285.8 HCl(aq)  -167.2 HCl(g)  -92.3  Must show your work (scratch paper) to receive credit.

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

In which case is the work done on the system always positive?

An endothermic reaction has

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…)

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

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

Use the standard enthalpies of formation provided to calculate the change in enthalpy for the reaction below: 2 Cl2(g)  +  2 H2O(l) → 4 HCl(g) + O2(g)            ΔH°f (kJ/mol) H2O(l)  -285.8 HCl(aq)  -167.2 HCl(g)  -92.3  Must show your work (scratch paper) to receive credit.